Use Of Frequency Inverter; Maintenance; Maintenance Program - UNTES URTP055 Instructions For Installation, Commisioning, Maintenance And Use

Compressor 2 Low Pressure Error
 Check gas pressures in this stage.
 Check low pressure safety element.
 Check exp. valve element.
 Check filter within gas circuit.
 Check valve positions on gas installation.
 Check electric cable connections.
 Check the set value of safety element.
 Check cleanness of air filter within the device.
 Check cleanness of evaporator surfaces.
Compressor 1 High Pressure Error
 Check feeder switch belonging to the compressor.
 Check high pressure safety element.
 Check condenser fans.
 Check cleanness of condenser surfaces.
 Check cable connections.
 Check safety elements belonging to the compressor.
 Check Hp relay coil and its contacts.
 Check the feeder voltage.
Compressor 2 High Pressure Error
 Check feeder switch belonging to the compressor.
 Check high pressure safety element.
 Check condenser fans.
 Check cleanness of condenser surfaces.
 Check cable connections.
 Check safety elements belonging to the compressor.
 Check Hp relay coil and its contacts.
 Check the feeder voltage.

12.12. Use of Frequency Inverter

The subject under this title is explained in the frequency inverter manual in details.

13. MAINTENANCE

The protective maintenance program is a crucial part of an effective safety program. Maintenance works
should be carried out by experienced and trained personnel. In order to insure the maintenance safety, use a
repair switch near the device. Always make sure that the repair switch is off when carrying out maintenance
and repair works in order to secure yourself and prevent second people from getting involved. Do not try to
carry out maintenance works prior to cutting the electricity and insuring the safety of the fan.

13.1. Maintenance Program

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