Technical data

7 MAINTENANCE
Never release refrigerant to the
atmosphere when emptying the
refrigerating circuit. Suitable retrieval
equipment must be used. If reclaimed
refrigerant cannot be re-used. It must
be returned to the manufacturer.
Never discard used compressor oil, as
it contains refrigerant in solution.
Return used oil to the oil manufacturer.
The Safety Section of this manual should be
read carefully before attempting any
maintenance operation on the unit.
Unless otherwise indicated, the maintenance
operations described below can be performed by
any properly trained maintenance technician.
7.1 General Requirements
The York YCWM/YCRM range has been designed
to work continuously provided they are regularly
maintained and operated within the limitations
given in this manual. Each unit should be
maintained in accordance with the schedule by the
operator/customer, backed up by regular service
and maintenance visits by an authorised York
Service Centre.
It is the responsibility of the owner to provide for
these regular maintenance requirements and/or
enter into a maintenance agreement with a York
Service Centre to protect the operation of the unit.
If damage or a system failure occurs due to
improper maintenance during the warranty period,
York shall not be liable for costs incurred to return
the unit to satisfactory condition.
This maintenance section applies only to the basic
YCWM/YCRM unit and may, on individual
contracts, be supplemented by additional
requirements to cover any modifications or
ancillary equipment as applicable.
7.2 Daily Maintenance
The maintenance checks should be carried out in
accordance with the maintenance schedule
detailed below by a competent person. Please
note, however, that YCWM/YCRM units are not
generally user serviceable and no attempt should
be made to rectify faults or problems found during
daily checks. If in any doubt, contact your local
York service agent.
Scheduled Maintenance
Operation
Daily Weekly Monthly Start of Season End of Season
Check evaporator entering /
leaving liquid temperature
●
Check evaporator pressure
drop
●
Check condenser pressure
drop
●
Check electrical power
consumption
●
Check suction pressure and
temperature
●
Check discharge pressure
and temperature
●
Check compressor oil level ●
Check for gas bubbles in
refrigerant
●
Check low pressure switch ●
Check high pressure switch ●
Check evaporator insulation ●
Check tightness of wiring
terminal screws
●
Clean outside surface of the
unit with soapy water
●
Check specific gravity of
brine (Glycol) if applicable
●●
Drain and clean the
evaporators and condensers
●
035B40022-000 7-1