J&E Hall JEHSD-0600-M-3, Technical Manual

Page: 30 / 40

Issue: 01.05.2017 Page 30
Service & Maintenance
4. Controls
•
Check settings and operation of controller and transducers/sensors.
•
Check settings and operation of pressure switches.
•
Check overload setting.
•
Check fan speed control setting and operation.
5. Power Supply
– Inspect at regular intervals.
•
Check the running current and voltage for the condensing unit.
•
Check the electrical wiring and tighten the wires onto the terminal blocks if necessary.
6. Refrigerant Charge
•
Check the refrigerant charge by ensuring that the system is operating correctly, the pressures are as expected
and that the liquid line sight glass shows a full bore of liquid refrigerant.
•
Carry out a full leak test.
7. Unit decommissioning and disposal
•
At the end of the unit’s useful life, a suitably qualified engineer should decommission it. The refrigerant and
compressor oil are classed as hazardous waste and as such must be reclaimed and disposed of in the correct
manner, including completion of waste transfer paperwork. The unit components must be disposed of or recycled
as appropriate in the correct manner.