3.7 Power supply module
The power supply module (PS M), as shown below, contains the power supply and relays for con-
trolling the compressor, lights, evaporator fan, and an auxiliary relay that can be used for boosted
defrosts. The power supply module is fitted with the following cables:
l High voltage cable terminated with 6-way connector for connecting to the compressor, lights, evaporator fan,
and defrost heaters or valves.
l Interface cable that connects to interface cable of the control display module.
The power supply module must be mounted vertically with the cables exiting vertically downwards.
The power supply module has an (Ingress Protection) IP rating of IPX5, which means the power supply
module is protected against water jets.
Caution:
l The power supply module must be located in a non-refrigerated area of the cooler. The power supply module
must not be:
l Placed in the hot exhaust flow of the condenser
l Exposed to temperatures greater than 50°C (122°F) or lower than 0°C (32°F).
The dimensions of the power supply module and the fixing holes are shown in the following diagram:
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27 February 2014
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