T-CU11-OCT22-0
Page 20
Service and Maintenance
Disconnect the mains electrical
supply before servicing or opening
the unit.
The condensing units are designed to give long life
operation with minimum maintenance. However, they
should be routinely checked, and the following service
schedule
is
recommended
under
normal
circumstances.
The removal of the top, side and front panels ensures that all
parts are accessible.
1. Compressor
–
Inspect at regular intervals
•
Check for refrigerant leaks on all joints and
fittings. Retighten the valve cap according to
the Table: Tightening Torque.
•
Check for refrigerant leaks on all joints and
fittings.
•
Check mountings for tightness and wear.
•
Check operation of crankcase heater.
•
Check electrical connections.
•
Ensure that no abnormal noise or vibration is
detected during test run.
•
Check the compressor oil levels and top up if
required. The oil level should be ½ to ¾ way
up the sight glass (where fitted).
2. Condenser Fan Motor & Blade
–
Clean and inspect
at regular intervals
•
Check for abnormal noise, vibration, and fan
imbalance.
•
Ensure that the fan motor is clean and spins
freely.
•
Check that the condenser fan blade is clean
and
free
from
restriction
and
damage/imbalance.
•
Note: The fan motor is pre-lubricated, and
factory sealed so no maintenance is
necessary.
3. Condenser Coil
–
Clean and inspect at regular
intervals.
•
Remove surface dirt, leaves etc. with a
vacuum cleaner (preferably with a brush or
other soft attachment rather than a metal
tube), compressed air blown from the inside
out, and/or a soft bristle (not wire!) brush. Do
not impact or scrape the coil with the vacuum
tube, air nozzle, etc.
4. Controls
•
Check settings and operation of pressure
switch.
•
Check overload setting.
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.
8. Warranty
•
The warranty as provided by Daikin on its
products is subject to correct application,
siting, and installation procedures together
with subsequent recorded
maintenance/servicing carried out in
accordance with our recommendations.
Failure to do so could result in the withdrawal
of our warranty. Please go to our website for
our detailed warranty terms and conditions:
www.daikin.com.my
WARNING
