Maintenance; Regular Maintenance; General Inspection; Refrigeration Circuit - Iom CWAR 01-N-3ALL Manuel D'installation Et De Maintenance

18. MAINTENANCE

The user is responsible for ensuring that the appliance is in a proper working condition and that
technical installation as well as the regular maintenance operations are performed by properly trained
technicians and in accordance with the instructions contained in this manual.

18.1. REGULAR MAINTENANCE

These units have been designed for minimum maintenance through the use of permanently lubricated components.
However, there are operational maintenance requirements that require regular attention to ensure optimum
performance.
Maintenance must be performed by appropriately experienced personnel only.
WARNING : Isolate unit from power supply before working on unit.
On commissioning, a record of voltages, current draw and temperature variances should be made. Thereafter,
on an annual basis further measurements can be compared to these initial values and will be useful for giving an
overall indication for the equipment's general condition.

18.2. GENERAL INSPECTION

Carry out a visual inspection of the complete installation in service.
Check the general cleanness of the installation, and check if the condensate evacuations is not blocked.
Check the condition of the condensate tray by pulling it out of the casing.

18.3. REFRIGERATION CIRCUIT

Clean the heat exchanger using a special product for aluminium-copper heat exchangers, and rinse with water.
Do not use hot water or steam, as this could cause the pressure of the refrigerant to rise.
Check that the surface of the aluminium fins of the heat exchanger is not damaged by impacts or scratches, and
clean with an appropriate tool if necessary.
The refrigeration system is hermetically sealed and should require no regular maintenance. However, it is
recommended to leak test the refrigerant system and check the general operating conditions and control devices
on a regular basis. The operating pressures should be checked particularly as they are an excellent guide for
maintenance.

18.4. ELECTRICAL SECTION

Check that the main power supply cable is not damaged or altered in such a way as to affect the insulation.
The contact surfaces of relays and contactors should be inspected regularly by an electrician and replaced as
judged necessary. On these occasions the control box should be blown out with compressed air to remove any
accumulation of dust or other contaminants.
Check the earth grounding connection.
BEFORE CARRYING OUT ANY OPERATION ON THE EQUIPMENT,
CHECK THAT THE ELECTRICAL POWER SUPPLY IS SWITCHED
OFF AND THAT IT CANNOT BE SWITCHED ON INADVERTENTLY.
CAUTION
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