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10. Wiring
A wiring diagram, specific for the units of the GS series, is enclosed with these use
and maintenance instructions.
11. Maintenance and repairs
Suitable maintenance is crucial for obtaining longer life, perfect working conditions and high
efficiency of the unit as well as for ensuring the safety features provided by the manufacturer.
12 Routine
maintenance
Good operation of the unit requires the condenser to be cleaned periodically (frequency of
cleaning depends on the environment where the unit is installed).
Turn off the unit and clean it by blowing air from the inside outwards. Should no air jet be
available, use a long-haired brush and work on the outside of the condenser.
In case of water-cooled condensers have the unit cleaned by a plumber with special descaling
agents.
WARNING
Use safety gloves to protect your hands from possible cuts.
WARNING
Disconnect the unit before working on it.
12.1 Periodical
maintenance
Periodically check wear condition of electrical contacts and remote switches; if necessary
replace them.
12.2 Service operations to be carried out by qualified technicians or by the manufacturer
Following operations shall be carried out by qualified technicians or by the manufacturer
exclusively. Under no circumstances the user is allowed to:
•
replace electrical components
•
work on the electric equipment
•
repair mechanical parts
•
work on the refrigerating system
•
work on the control panel, ON/OFF and emergency switches
•
work on protection and safety devices.
12.3 Troubleshooting
During operation following troubles may occur:
1. Compressor stops. The unit is equipped with an overtemperature device which stops the
compressor every time the max. allowable temperature of motor windings is exceeded. Possible
causes are:
- insufficient ventilation of the room where the unit is installed;
- anomaly in mains voltage;
- faulty operation of condenser fan.
Device reset is automatic.
2. Ice forms on the evaporator preventing air from flowing regularly.
Possible causes are:
