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MEDICAL FREEZERS
Models
AFZ2PVBIADA
AFZ5PVBIADA
AFZ7PV
AFZ14PV
AFZ17PV
AFZ19PV
User Manual
BEFORE USE, PLEASE READ AND FOLLOW ALL SAFETY RULES AND OPERATING
INSTRUCTIONS
Accucold Division of Felix Storch, Inc.
An ISO 9001:2015 registered company
770 Garrison Avenue
Bronx, NY 10474
www.accucold.com
2
EQUIPMENT SAFETY
Your safety and the safety of others are very important.
We have provided many important safety messages in this manual and on your unit. Always read and
obey all safety messages.
This is the Safety Alert Symbol. The symbol alerts you to potential hazards that
can kill or injure you and others. All safety messages will follow the Safety
Alert Symbol and either the words "DANGER" or "WARNING".
DANGER means that failure to heed this safety
statement may result in severe personal injury or
death.
WARNING means that failure to heed this safety
statement may result in extensive product
damage, serious personal injury, or death.
WARNING: Low temperature/freezing conditions, frostbite HAZARD
WARNING: flammable material
All safety messages will alert you about the potential hazard, tell you how to reduce the chance of injury,
and let you know what can happen if the instructions are not followed.
EQUIPMENT SAFETY
Before the equipment is used, it must be properly positioned and installed as
described in this manual, so read the manual carefully. To reduce the risk of fire,
electrical shock or injury when using this equipment, follow basic precautions,
including the following:
•
Plug into a grounded 3-prong outlet, do not remove grounding prong, do not use an adapter, and do
not use an extension cord.
•
Replace all panels before operating.
•
It is recommended that a separate circuit serving only your unit be provided. Use receptacles that
cannot be turned off by a switch or pull chain.
•
Never clean the equipment parts with flammable fluids. These fumes can create a fire hazard or
explosion. And do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other pieces of equipment. The fumes can create a fire hazard or explosion.
•
Before proceeding with cleaning and maintenance operations, make sure the power line of the unit is
3
disconnected.
•
Do not connect or disconnect the electric plug when your hands are wet.
•
Unplug the unit or disconnect power before cleaning or servicing. Failure to do so can result in
electrical shock or death.
•
Do not attempt to repair or replace any part of your unit unless it is specifically recommended in this
manual. All other servicing should be referred to a qualified technician.
•
These units are CFC- and HFC-free and contain a small quantity of propane (R290). They are
environmentally friendly, but flammable. They do not damage the ozone layer, nor do they increase
the greenhouse effect. Care must be taken during transportation and setting up of a unit that no parts
of the cooling system are damaged. Leaking coolant can ignite and may damage the eyes.
•
In the event of any damage:
-
Avoid open flames and anything that creates a spark,
-
Disconnect from the electrical power line,
-
Air the room in which the unit isolated for several minutes, and
-
Contact the Service Department for advice.
•
The more coolant there is in a unit, the larger the room it should be installed in. In the event of a
leakage, if the unit is in a small room, there is the danger of combustible gases building up. For every
ounce of coolant, at least 325 cubic feet of room space is required. The amount of coolant in the unit
is stated on the data plate inside the unit. It is hazardous for anyone other than an Authorized Service
Person to carry out servicing or repairs to this piece of equipment.
•
Take serious care when handling, moving, and using the unit to avoid either damaging the refrigerant
tubing or increasing the risk of a leak.
•
Replacing component parts and servicing shall be done by factory-authorized service personnel so as
to minimize the risk of possible ignition due to incorrect parts or improper service.
FOLLOW WARNING CALLOUTS BELOW ONLY WHEN APPLICABLE TO YOUR MODEL
•
Use two or more people to move and install unit. Failure to do so can result in back or other injury.
•
To ensure proper ventilation for your unit, the front of the unit must be completely unobstructed.
Choose a well-ventilated area with temperatures above 60°F (16°C) and below 90°F (32°C). [For
optimal performance, install the unit where the ambient temperature is between72º and 78ºF (23º-
26ºC).] This unit must be installed in an area protected from the elements, such as wind, rain, water
spray or drips.
•
The unit should not be located next to ovens, grills or other sources of high heat.
•
The unit must be installed with all electrical, water and drain connections in accordance with state and
local codes. A standard electrical supply (110 V AC only, 60 Hz), properly grounded in accordance
with the National Electrical Code and local codes and ordinances, is required.
•
Do not kink or pinch the power supply cord of the unit.
•
The size of the fuse (or circuit breaker) should be 15 amperes.
•
It is important that the equipment be leveled in order to work properly. You may need to make several
adjustments to level it.
•
All installations must be in accordance with local plumbing code requirements.
•
Make certain that the pipes are not pinched, kinked or damaged during installation.
•
Check for leaks after connection.
•
Never allow children to operate, play with or crawl inside the unit. Medical device, only professional use.
•
Do not use solvent-based cleaning agents or abrasives on the interior. These cleaners may damage
or discolor the interior.
•
Use this equipment only for its intended purpose as described in this Instruction Manual.
•
Keep fingers out of the “pinch point” areas. Clearances between the door and cabinet are necessarily
small. Be careful closing the door when children are in the area.
•
Ensure all ventilation openings are not obstructed.
•
Do not use mechanical devices or other to accelerate the defrosting process, other than those
recommended by the manufacturer.
•
Do not damage the refrigerant circuit.
4
Risk of child entrapment!
•
Child entrapment and suffocation are not problems of the past. Junked or abandoned appliances are
still dangerous, even if they will “just sit in the garage a few days”. Medical device, only professional
use.
Before discarding your old freezer:
Take off the doors
Leave the shelves in place so that children may not easily climb inside.
-SAVE THESE INSTRUCTIONS-
5
INSTALLATION INSTRUCTIONS
Before Using your Equipment
•
Remove the exterior and interior packing.
CAUTION: After unpacking you MUST allow this unit to stand upright for at least 2 hours to allow the
lubricant and refrigerant to drain back into the compressor and stabilize. Failure to do so
may adversely affect performance and the lifetime of this unit.
•
Clean the interior surface with lukewarm water using a soft cloth.
Installation of your Equipment
NOTE: Do not store or install the unit outdoors.
•
Units with BI in their suffix are designed to be built-in or via recessed installation. The rest of
the units listed in this manual are designed for freestanding use. All models are for indoor use
only.
CAUTION: This equipment is designed for the storage of medicine or other medical products. Do not
store beverages or perishable food in this unit.
•
Place the freezer on a floor that is strong enough to support it when it is fully loaded. To level the
unit, adjust the front leveling legs.
•
For free-standing installation, allow at least 5 inches (127mm) of space between the back, top,
and sides of the unit. This allows the proper air circulation to cool the compressor and condenser
for energy saving. Even for recessed or built-in installation (units with “BI” in the model number),
it is a must to keep ¼” (6.35mm) of space on each side, and 2” (51mm) on the top and at the
rear. The air vent at the front of the unit must never be covered or blocked in any way.
NOTE: It is recommended that you do not install the unit near an oven, radiator, or other heating
source. Direct sunlight may affect the acrylic coating and heat sources may increase
electrical consumption. Do not install in a location where the temperature will fall below
60°F (16°C). For best performance, do not install the unit behind a cabinet door or block the
base grille.
•
Avoid locating the unit in moist areas.
•
Plug the unit into an exclusive, properly grounded wall outlet. Do not under any circumstances
cut or remove the third (ground) prong from the power cord. Any questions concerning power
and/or grounding should be directed toward a certified electrician or an authorized service
center.
Electrical connection
This unit should be properly grounded for your safety. The power cord of this unit is equipped with a
three-prong plug which mates with standard three-prong wall outlets to minimize the possibility of
electrical shock.
Do not under any circumstances cut or remove the third (grounding) prong from the power
cord supplied. For personal safety, this equipment must be properly grounded.
6
This unit requires a standard 110 Volt AC ~ 60Hz three-prong grounded electrical outlet. Have the
wall outlet and circuit checked by a qualified electrician to make sure the outlet is properly grounded.
When a standard 2-prong wall outlet is encountered, it is your responsibility and obligation to have it
replaced with a properly grounded 3-prong wall outlet.
To prevent accidental injury, the cord should be secured behind the unit and not left exposed or
dangling.
The unit should always be plugged into its own individual electrical outlet which has a voltage rating
that matches the rating label on the unit. This provides the best performance and also prevents
overloading house wiring circuits that could cause a fire hazard from overheating. Never unplug the
unit by pulling on the power cord. Always grip the plug firmly and pull it straight out from the
receptacle. Repair or replace immediately all power cords that have become frayed or otherwise
damaged. Do not use a cord that shows cracks or abrasion damage along its length or at either end.
When moving the equipment, be careful not to damage the power cord.
Electrical Connection
Because of potential safety hazards under certain conditions, it is strongly recommended that you do
not use an extension cord with this equipment. However, if you must use an extension cord it is
absolutely necessary that it be a UL/CUL-Listed, 3-wire grounding type equipment extension cord
having a grounding type plug and outlet and that the electrical rating of the cord be 115 volts and at
least 10 amperes.
Reversing the Door
Unless ordered as an “LHD” variant, your unit is shipped with a right-hand self-closing door swing.
If you wish to reverse the door to open from the opposite direction, follow the steps listed below.
NOTE: Doors on units with “DL2B” data loggers are not reversible.
1. Carefully lay the unit on its back and remove the two front leveling legs
2. Remove the two hex head screws that connect the door hinges to the body on the bottom of the
unit
3. Remove the two flathead screws that connect the hinge assembly to the bottom of the door
4. Remove the white hinge from the square rod
5. Slide the door towards the bottom until it is free of the top hinge
6. Unscrew the top hinge pin from the unit and reinstall it on the left side
7. Flip the door so the handle is now on the right side
8. Push the door onto the top hinge piece.
9. Reinstall the hinge assembly on the left side bottom of the door using the flathead screws
10. Push the white hinge onto the square rod at an angle of 90 degrees
11. Turn the white hinge clockwise until the holes line up with screws located on the bottom of the
unit
12. Replace the hex head screws and front leveling legs
NOTE: Once the door has been reversed, the Pharma-Vac or Med-Lab sticker will be upside down.
You can remove and reapply to the preferred position. If you would like a replacement
sticker, contact our parts department at parts@summitappliance.com.
CAUTION: After setting the unit upright you MUST allow this unit to stand upright for at least 2 hours
to allow the lubricant and refrigerant to drain back into the compressor and stabilize.
Failure to do so may adversely affect performance and the lifetime of this unit.
7
1. Keyed lock
2. Microprocessor control panel
3. Reset switch
4. Light switch
5. Internal light
6. Leveling legs
7. Kickplate
8. Temperature sensor in glycol bottle
9. Handle
10. Dry contacts (located in rear)
11. Access port- for added monitoring
devices of the useable area inside the unit
LOCATION OF PARTS
Specifications
Model
AFZ2PVBIADA
AFZ5PVBIADA
Climatic Class N/ST
Operation temperature 0℃-32℃ / 32°F-90°F
Altitude Up to 200m
Storage Temperature -30℃~-10℃ / -22°F-14°F
Capacity 70L/ 2.47ft3 110L/ 3.88ft3
Rated Voltage 110VAC
Mains fluctuations ±10%
Frequency 60Hz
Power 130W 150W
Pollution degree 2
Refrigerant R290
Vesicant Cyclopentane
8
OPERATION – QUICK SETUP GUIDE
This section explains how to operate your unit. For more detailed instructions on changing the
parameters of the control panel, see page 10.
Once plugged in, the display will show the product temperature inside the freezer and the compressor
will start to run (an indicator light on the control panel will turn on at the same time).
NOTE: This product utilizes two sensors: A Product Sensor (display sensor) and an Air Sensor
(control sensor).
For maximum performance, the freezer controls use a separate air sensor. This allows it to rapidly
respond to product loading and door openings. You may need to adjust the controller to lower the
desired product temperature as the air temperature needs to be lower to pull the product
temperature down.
The temperature displayed is the product temperature recorded by the product sensor in glycol
inside a vial located in the freezer. As the freezer cools to the set point, the number on the
display will decrease accordingly. The product vial will take longer to cool than the air in the
freezer.
If power is cut off, wait for at least 5 minutes before plugging the unit in again to avoid damaging the
compressor.
Adjusting the Operating Temperature
To change the set point, press the SET key and the set-point temperature will be displayed. To
change the set point, within 10 seconds, press the up or down arrow key until the desired
temperature is displayed. The new set point will be memorized when you push the SET key again.
Solid door models come preset to -25°C (-13°F). Adjust the temperature up or down to achieve your
desired product temperature the displayed temperature.
High/Low Temperature Alarm
If the temperature in your freezer drops below the low alarm set point, an alarm will sound. The front
panel display will flash LO and the current temperature will be displayed alternately. Also, if the
temperature rises above the high air alarm setpoint an alarm will sound.
The front panel display will flash HI and the current temperature will be displayed alternately. if the
temperature rises above the high product alarm setpoint an alarm will sound. The front panel display
will flash H2 and the current temperature will be displayed alternately. There could be a number of
reasons for this which should be investigated immediately.
The freezer should be monitored to check that it is returning to the correct temperature. Set the
alarm values to meet your requirements in the parameter set-up and settings.
9
Power Failure Alarm
After plugging in the equipment, move the “Reset Switch” located at the front of the unit to the down
position. When electrical power to the equipment is lost, an alarm will sound, and it will silence when
the power is restored. Note the alarm is battery-powered and has a limited time it can ring.
Min/Max Temperature Recording
•
Once connected to the power supply, your unit records the maximum high and minimum low
temperatures reached inside the cabinet. The display will show the last HI and LO temperatures
recorded until the freezer is reset.
•
To display the HI reading, press and release the HI/LO button. To display the LO reading, press
and release the HI/LO button again.
To Reset the Min/Max Temperature Recording
Hold the HI/LO button for 6 seconds. To confirm the operation, the display starts blinking and the
buzzer sounds. After 5 seconds, the normal display will be restored.
Changing the Temperature Display
This unit ships with the temperature displayed in Celsius by default. If you prefer the display in
Fahrenheit, you will need to enter your password and adjust the parameters. Press and hold the
“Set” button until it flashes “Pas,” then enter the password (factory default is “15”) using the up and
down arrows. Once you enter the password, press “Set” about 25 times until “CF” displays, then
press the down arrow until the control displays “ºF”, then press “Set.” Wait 6 seconds and the setting
will be recorded, with your unit resuming normal operation.
Interior Light
Your unit includes an LED light that will automatically illuminate when the door is opened. If you
would like to keep the light on when the door is closed, push the switch to the “on” position.
Door Alarm
If the door of the freezer is left open for more than 3 minutes, an audible alarm will sound. The
alarm will be turned off automatically when the door is closed.
Remote Alarm
The electronic controller is equipped with dry contacts for alarm forwarding to an external remote
alarm system (terminal block on the back of the freezer).
NOTE: The remote contacts are normally “closed” and “open” when the alarm goes off. To change
the output to normally “open” and “closed” on alarm see item “C12” of the Table of
Parameters and Factory Settings. Change the “C12” setting to “00” instead of “01”.
10
Summary of Alarm Types
ALARM TRIGGER DISPLAY
Air temperature high alarm HI delay alarm
Air temperature low alarm LO delay alarm
Air temperature sensor short circuited 1H in time alarm
Air temperature sensor open circuited 1L in time alarm
Product temperature sensor short circuited 2H in time alarm
Air temperature sensor open circuited 2L in time alarm
Product temperature high temp alarm H2 delay alarm
Product temperature low temp alarm L2 delay alarm
Electric supply off alarm No display – alarm in time
Door open delay alarm Dr flash and delay alarm
Storage Tips
•
Even at capacity, the content should not touch the inner wall of the freezer.
•
Leave space around the contents to prevent freezing, be sure the articles do not touch
the back of the interior cabinet.
•
Store articles away from the wall.
•
Shelves can be adjusted to allow proper airflow around the products being stored.
11
DETAILED TEMPERATURE CONTROLLER
GUIDE
Front Panel Operation
Set temperature (the compressor’s top temperature) adjustment:
1. Press the SET button, and the set temperature will be displayed, then press the UP or
DOWN arrow to store and memorize. Press the SET button to exit the adjustment
status and display the product temperature. If no more buttons are pressed within 6
seconds, the freezer product temperature will be displayed.
2. (Set temperature adjustment range: Parameter E1～E2)
Manually start/stop defrosting:
Press HI/LO button, then press the SET button and hold for 6 seconds to enter defrost status or to
stop defrost.
Display the sensor temperature (C13):
Press the DOWN arrow, and the product temperature (or cabinet temperature) will be displayed.
After 6 seconds, will resume normal display.
Refrigeration LED:
During refrigeration, the cooling snowflake LED is on. When the temperature is constant, the LED is
off.
Defrost LED:
During defrosting (if activated), the defrost LED is on. During the delay after defrosting, the LED
flashes.
Parameter set-up and settings (for all settings other than temperature setpoint):
Press the SET button and hold for 6 seconds to enter the parameter setting (flash and display
PAS). After entering the correct password (factory default is 15), press SET and the display will
show E1, E2, …~do3 PAS in sequence. Press the UP or DOWN arrow and the value of the
parameter will be displayed and can be modified and stored. If no other buttons are pressed within
6 seconds, it will exit, and the new value will be stored. NOTE: Only when in the inner parameter
menu (display PAS) and the correct password is entered can the parameter value be adjusted. If
the wrong password is entered, the parameter modification menu will be exited, although the set
temperature adjustment is still active. If you forget the password, you will need to resume the factory
default settings.
12
The following are examples of how to change common settings:
A. Enter Password - Press and hold the “Set” button 6 seconds until it flashes “Pas”, then enter the
default password “15” using the up and down arrows. When “15” is reached press the “Set”
button.
B. Change display to “°F” in lieu of “°C” - After entering the password, press the set button
about 25 times to reach the “CF” display, then press the up or down arrow unit the control
displays “°F” then press set. Wait 6 seconds and it will be set and the unit will go back to normal
operation.
C. High Air Alarm Settings - After entering the password, press the set button until you reach the
“C1” display, then press the up or down arrow unit the control displays your desired setting then
press set. Wait 6 seconds and it will be set and the unit will go back to normal operation.
D. Low Air Alarm Settings - After entering the password, press the set button until you reach the
“C2” display, then press the up or down arrow unit the control displays your desired setting then
press set. Wait 6 seconds and it will be set and the unit will go back to normal operation.
E. High Product Alarm Settings - After entering the password, press the set button until you
reach the “C3H” display, then press the up or down arrow unit the control displays your desired
setting then press set. Wait 6 seconds and it will be set and the unit will go back to normal
operation.
F. Low Product Alarm Settings - After entering the password, press the set button until you
reach the “C3L” display, then press the up or down arrow unit the control displays your desired
setting then press set. Wait 6 seconds and it will be set and the unit will go back to normal
operation.
To change any other parameters in the “Factory Settings” menu enter the Password and then press
the “Set” button until the desired Parameter is displayed, then press the up or down arrow until the
desired setting is displayed then press the “Set” key again. Wait 6 seconds and it will be set and the
unit will go back to normal operation
Recording the highest and lowest temperature
Once turned on and after the C5 delay, the unit will start to record the highest and lowest
temperature; the record will be refreshed at any time. The values will be kept in memory even after
the power is turned off. Press the HI/LO button to see the highest temperature recorded. Press it
again to see the lowest temperature. Holding the HI/LO button for 6 seconds will cause the display
to flash and a buzzer to sound; the previous highest and lowest temperature readings will be
cleared, and a new record will begin. (Highest and lowest temperature recording instructions: When
parameter F4=0, the unit can record highest and lowest temperature at any time. When F4=1,2,3,
during defrost and delay locking 20 minutes, highest and lowest temperatures are not recorded.
During air sensor failure, highest and lowest temperatures are not recorded.) When set at C13=00,
the temperature in the liquid bottle is recorded; when set C13=01, the temperature of the air in the
cabinet is recorded. The product temperature corresponds to the temperature of the liquid in the
bottle.
Resetting parameters to factory default
Press and hold the DOWN arrow; at the same time, press the UP arrow and hold for 6 seconds. The
display will flash and show 888. At this time, all parameters will reset to their factory default values.
After 6 seconds, normal operations will resume.
To check or change the password:
Enter the inner parameter menu (PAS display) and enter the correct password. After entering the
inner parameter PAS, press the UP or DOWN arrow to display and change the password, then press
HI/LO to confirm and store the new password.
13
Table of Parameters and Factory Settings
Parameter Function Set Range Default Parameter Function Set Range Default
Set Setpoint
-25°C C3H Product
Temp. High
Temp. Alarm
C3L~40.0°C /
104°F
-15°C /
5°F
PAS Password 00~99 15 C3L Product
Temp. Low
Temp. Alarm
-40.0°C/-
40°F~C3H
-40°C /
-40°F
E1
Lowest set
-30°C / -22°F
-30°C / -22°F
C4
Hysteresis
0.1~20.0°C /
0.1°C /
point limit
Alarm
0.2~36.0°F
0.18°F
E2 Higher set
point limit
-10.0°C / 14°F -10.0°C / 14°F C5 Start-up
Temp. Alarm
delay
00~99 min 60 min
E3 Temp.
Hysteresis
0.1~20.0°C /
0.2~36.0°F
3°C / 37.4°F C6 Temp. Alarm
Delay
00~99 min 3 min
E40 Turning On
delay time
00 ~10 min. 3 min. C7 Turn off
Relay
Alarm
00=do not alarm /
01= alarm
01
E41 Comp. start
delay time
00 ~10 min. 3 min. C8 The alarm
relay closed
after
silencing
alarm relay
switch
00=open /
01=close
00
E5 Offset on Air
Temperature
-10.0~10.0°C / -
18.0~18.0°F
2.0°C / 3.6°F
C9 Restart
time after
buzzer is
muted
00=do not start /
01 ~30 min=restart
time
10 min
E6 Offset on
Product
Temp.
-10.0~10.0°C / -
18.0~18.0°F
0.0°C / 32°F C10 Comp.
Force stop
time
01~99 min 99 min
14
F0 Defrost Type 00=defrost by
turning of comp.
00 C11 Comp.
Force
Running
Time
00=comp. Stop /
01-99min=starting
time
0 min
F1 Max defrost
duration
01~60 min. 0 min. C12 Alarm
Output Type
00=contact
actuation when
alarm / 01=contact
disconnect when
alarm
01
F2 Defrost
Interval
（XXhr/time）
00~24 hr. 00 C13 Normal
State temp.
display type
00=liquid bottle
temp / 01=cabinet
air temp.
00
F4 Temp.
displaying on
screen when
defrosting
00= normal Temp;
01=latest Temp.
02=Fixed Temp. ;
03=showing “dEF”
on screen
00 CF Temperature
Unit
°C=Celsius /
°F=Fahrenheit
°C
C1 High Temp
Air Alarm
C2~40.0°C / 104°F -15°C / 5°F do1
00=do not alarm /
01=99
min=delayed alarm
02 min
C2 Low Temp Air
Alarm
-40°C / -40°F~C1 -40°C / -40°F do2 Comp.
status when
door open
0=stop /
01=original status
0 1
do3 Light status
when door
open
00=start /
01=original status
0 1
15
FUNCTION DETAILS
Temperature Control: After turning on the unit and reaching the delay time (parameter E40), the
compressor starts operating when the cabinet temperature is higher than (set temperature +
hysteresis) and will be off when the cabinet temperature is lower than the set point temperature.
To protect the compressor, it cannot be re-started unless the time after the compressor stops is
longer than the delay time (Parameter E41).
Defrost Control: After running for a defrost interval set time (parameter F2), the unit will enter
defrost and the compressor stops. When the defrost duration time (parameter F1) ends, it will exit
defrost status. After a defrost period ends, there will be 2 minutes of dripping time before the unit
can enter refrigeration status.
•
When defrost interval F2 is set to “00”, the automatic defrost function will be cancelled.
•
When setting parameter F4 is set to “0”, the temperature will be displayed normally during
defrost.
•
When setting parameter F4 is set to “1”, the cabinet temperature is locked during defrosting,
and the last value before defrosting is displayed. When defrost ends, normal display will
resume after temperature display 20 minutes delay (or cabinet temperature lower than the set
temperature). The defrost LED flashes during delay.
•
When setting parameter F4 is set to “2”, the set temperature will be displayed during defrost.
•
When defrost ends, normal display will be resumed after 20 minutes delay (or cabinet
temperature lower than the set temperature). The defrost LED flashes during delay.
•
When setting parameter F4 is set to “3”, dEF will be displayed during defrost. When defrost
ends, normal display will be resumed after 20 minutes delay display dEF (or cabinet temperature
lower than the set temperature). The defrost LED flashes during delay.
Alarm Control: After turning on for the first time, the unit will need to reach the C5 delay time
setting, then the high/low temperature alarm function can be triggered (C1, C2, C3). After passing
C5 delay, when the cabinet temperature is abnormal (for example higher than the temperature alarm
C1 or lower than temperature alarm C2) and duration more than alarm delay time C6, the unit will
enter alarm status, alarm start. When high temperature alarm alternate display H1 and cabinet air
temperature, the compressor starts to run. When low temperature alarm, will alternate display L0
and cabinet temperature, the compressor stops. When cabinet temperature is higher than the (low
temperature alarm value C2 + alarm hysteresis C4), the low temperature alarm will stop ringing.
When cabinet temperature is lower than (high temperature alarm value C1 –alarm hysteresis C4),
the high temperature alarm ends.
When the product sensor temperature is greater than ore equal to the product temperature high
temperature alarm value C3 and duration more than alarm delay time C6, unit enters alarm status,
and starts the alarm, alternate display H2 and cabinet temperature. When the product sensor
temperature is less than or equal to the(high temperature alarm value C3 – alarm hysteresis C4), it
will end the high temperature alarm.
When the electric supply is off, flash and display EEL and alarm. When setting do1 is set at “00”, unit
will not alarm when door is open. When setting do1 is set at “0”, once unit reaches the delay time, it
will flash and display “dr alarm”, press random button to cancel.
If setting C7 is set to “0”, then the units relay does not alarm when power is off.
16
If setting C8 is set to “0”, then after the alarm is canceled, the alarm relay will not close. If C9 is set
to “0”, then after the alarm cancel button is pushed, the buzzer does not restart.
If setting other numbers, then after reaching delay time, buzzer sounds one more time. (Under the
condition of alarm not terminating)
Error mode: When air sensor is short-circuited or high temperature over limit (＞ 66°C/151°F), "1H"
is displayed; when air sensor is open-circuited or low temperature over limit (＜- 40°C/°F) "1L" is
displayed. Compressor will enter the force running mode, according to C10, C11 set parameters
running in sequence.
When product sensor is short-circuited, open-circuited or over limit (＞66°C/151°F), alternate display
2H and air temperature, the product temperature sensor open-circuited or low temperature over limit
(＜-40°C/°F), alternate display 2L and air temperature.
Alarm Indicator List
Alarm type Compressor running Display flash
Freezer high temp. alarm Compressor on H1 delay alarm
Freezer low temp. alarm Compressor off L0 delay alarm
Air temp. sensor short-circuited Press C10, C11 to run the
comp.
1H in time alarm
Air temp. sensor open-circuited Press C10, C11 to run the
comp.
1L in time alarm
Product temp. sensor short-
circuited
2H in time alarm
Product temp. sensor open-
circuited
2L in time alarm
Product temperature high temp. Limit alarm H2 delay alarm
Product temperature low temp. Limit alarm L2 delay alarm
Electric supply off alarm
No display and alarm in
time
Door open delay alarm
Dr flash and delay alarm
When the door is open, the light switch can turn the light on and off.
17
Circuit Diagram
When the door is closed, normal close contact
When the door is open, contact is disconnected
Notes for installation:
1. Sensor leads must be kept separately from main voltage wires in order to avoid high frequency
noises, separate the power supply of the loads from the power supply of the controller.
2. When installing, the sensor must be placed with the head upward and the wire downward.
3. The temperature controller must not be installed in an area where water drips.
18
CLEANING AND MAINTENANCE
Before cleaning, it is essential that you unplug the unit from the power line and transfer the contents
where they can be stored and monitored at the correct temperatures.
•
Wash the inner compartment with warm water and neutral detergent. DO NOT allow the control
panel, cables or plug to get wet. NEVER use corrosive detergents, wire brushes, or abrasive
scourers to clean your freezer. NEVER use metal or sharp implements to remove debris.
•
Dry all surfaces thoroughly.
•
To ensure trouble-free operation, the condenser should be cleaned every three months where
appropriate using a vacuum hose. The condenser is located at the back of the cabinet. In
exceptionally dusty locations, the condenser should be cleaned more often.
When transporting the unit, try to keep it vertical with angle of inclination between sides of the
freezer and the horizontal plane not less than 50o. Otherwise the compressor may be affected,
disrupting normal operation of the freezer.
19
TROUBLESHOOTING
You can solve many common problems easily, saving you the cost of a possible service call. Try the
suggestions below to see if you can solve the problem before calling the servicer.
Problem
Possible causes
Fixes
The unit does not operate
Bad connection of plug or burnt out
fuse
Unplug the power cord and
re-connect the plug to
power supply or replace
with a new fuse
Abnormal operation of the
compressor or there is a
buzzing sound
The power voltage is out of rated
range
Disconnect the power
supply immediately and
reconnect with it after
normal voltage. It is
necessary to have a
voltage stabilizer in case of
poor power supply.
Compressor operates for a
long time and no frost on
the surface of the
evaporator
Refrigeration system is at fault
(leakage or blocked)
Call for service
There is frost or ice on the
walls of the inner cabinet
and internal temperature is
too low, the compressor
never stops running.
Thermostat does not work Call for service
The temperature setting of the
thermostat is too low.
Adjust to a higher
temperature
The internal temperature
is too high, and the
compressor never stops
operating.
Bad heat dissipation and ventilation of
condenser Improve ventilation
Too many warm items were put in at
one time
Remove some goods so air
can circulate
Door is being opened too frequently
during initial cool down
Permit the unit to cool
down adequately, prevent
product access during this
Too noisy
The unit is not level
Adjust the adjustable legs
The fastener of the unit is loose Tighten the loose fastener
Pipe near the compressor are
touching
Carefully separate the
touching pipes
The side of unit is hot
The condenser in the side wall gives
out heat as part of normal operation Nothing to worry about.
Sometimes a light sound
of water flowing will be
heard
Refrigerant flowing inside the pipe. Nothing to worry about.
20
There may be
condensation on the Solid
door
High ambient temperature or humid
conditions Dry with a cloth
The display shows “So”
and compressor does not
run
The temperature sensor is open circuit Call for service
The display shows “SC”
and compressor does not
run
The temperature sensor is short
circuited. Call for service
The display shows “HH”
and compressor does not
run
The ambient temperature is above
40°C/104°F Stop using immediately
The display shows “LL”
and compressor does not
run
The ambient temperature is below -
40°C/-40°F. Stop using immediately
If you continue to experience issues, contact our customer service facility at 1-888-4- MEDLAB any
time between 9:00 AM and 5:00 PM or visit our website accucold.com/support at any time. We will do
our best to answer your questions.
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