IOM – LOMOND - ZONE 1 FLAMEPROOF FLUORESCENT (ATEX)
I-LOMD-01.doc Issue 07 01/01/2021 3
4. The frequency of inspection must be determined by the user, but should be regular enough to ensure that the luminaire
installation continues to operate in the designed manner. The more onerous the operating conditions, the more frequent the
inspections should be. It is recommended that the interval between inspections should not exceed two years.
5. Plastic components may be cleaned with water containing a small amount of detergent, followed by a clean water wash.
Surplus water can be wiped off plastic components, but they should not be wiped or polished with a dry cloth to avoid a build
up of static electricity.
6. IMPORTANT. All components that are replaced must be in accordance with the manufacturer’s specification. Failure to use
such components invalidates the certification, approval and warranty of the luminaire and may make it dangerous. NO
modification should be made to the luminaire without the knowledge and approval of the manufacturer. If in doubt, refer to
the manufacturer.
Table 1
Model Length (feet) Certification Code
8W 1 Ex d llB T6 Ta -20°C to +55°C or Ex d llC T6 Ta -20°C to +55°C
18W 2 Ex d llB T6 Ta -20°C to +55°C or Ex d llC T6 Ta -20°C to +55°C
36W 4 Ex d llB T6 Ta -20°C to +53°C or Ex d llB T5 Ta -20°C to +55°C
58W 5 Ex d llB T6 Ta -20°C to +49°C or Ex d llB T5 Ta -20°C to +55°C
70W 6 Ex d llB T6 Ta -20°C to +44°C or Ex d llB T5 Ta -20°C to +55°C
TECHNICAL DATA
Only T8 lamps should be used except for the 8W model, which uses a T5 lamp.
Total circuit watts: 1x8W=9W, 1x18W = 19W, 1x36W=37W, 1x58W=55W, 1x70W=68W
2x8W=18W, 2x18W= 41W, 2x36W=71W, 2x58W=110W, 2x70W=132W
Maximum inrush current at switch on is 20A (8W), 30A (18W), 40A (36W), 45A (58W) and 50A (70W) for < 1ms
Power factor correction is better than 0.95
The luminaire is made from aluminium (body), glass (lens), stainless steel (reflector) and galvanised steel (mounting channel).
The user must ensure that these materials are suitable for the atmosphere the luminaire will be installed in.
SPECIAL NOTES
Please consult the manufacturer if the luminaire is to be used in high vibration areas.
The luminaire is only suitable for use in areas with low impact risk.
NO ATTEMPT must be made to remove the reflector from the lampglass assembly.
The glass assembly should be kept clean.
The terminal block is suitable for cables from 0.5mm2to 4mm2. An external and internal earth is provided.
INSTALLATION AND MAINTENANCE NOTES SPECIFIC TO THIS PRODUCT.
The lampglass assembly must be removed prior to mounting the luminaire. This achieved by removing the spring nut/square
washer at the end of the channel, releasing the two screws connecting the assembly to the ballast housing and unclipping the
suspension cable. The mounting channel should be secured in any orientation using a minimum of two fixing points. The
luminaire should then be reassembled with lamps fitted, as described below. Fit the spring nut/ square washer in the undercut in
the lampglass end casting to prevent movement due to vibration.
Two M20 cable entry points are provided for fitting approved flameproof cable entry devises, with or without the use of approved
flameproof thread adaptors. Care should be taken to ensure sealing of the glands is adequate to maintain the IP66/67 integrity.
LAMPING AND RELAMPING
1. Remove the lampglass assembly as described above. The lampglass should be jacked out as the screws are progressively
slackened, if not jar the ballast housing slightly to free it. Allow the lampglass to hang on the suspension cord.
2. Disconnect the plug and socket connection to the geartray. Slacken the geartray securing screw to allow the geartray to be
withdrawn.
3. The lamps can be fitted by locating their pins in the lampholders and rotating them through 90°. The geartray assembly can
then be installed in the lampglass assembly by reversing the above process.
4. Apply a smear of non-setting grease to the flamepath on the lampglass assembly before fitting it to the ballast housing. These
two parts should be aligned carefully and the bolts should tighten without difficulty. If not, attempt to improve the alignment.
5. Secure the assembly by alternately tightening the securing screws. Some resistance may be encountered because of air
locking of the enclosure. The assembly is completed when the lampglass assembly is fully home and compressing the
sealing ring.
GENERAL CARE
Flamepaths should be cleaned using a non-metallic scraper and/or suitable non-corrosive cleaning fluids.
Parts which are cracked, damaged or worn must be replaced with the correct parts supplied by the manufacturer.