Service And Maintenance - Daikin J&E Hall 1 Series Technical Manual

12. Service and Maintenance

Warning! – Disconnect the mains electrical supply before servicing or opening the
unit
Warning! – Ensure there is no refrigerant in refrigerant circuit before dismantle it
Warning! – If the supply cord is damaged, it must be replaced by the qualified
service agent in order to avoid a hazard.
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.
• 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 not be
lower than quarter of the compressor oil sight glass. Not applicable to AE/AJ.
2. Condenser Coil – Clean and inspect at regular intervals
• Check and remove the dirt and debris between the fins according to "Step 1: Remove
surface debris" at the same page.
• Check and remove any obstacles which may hinder the airflow through the condenser
coil.
3. 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.
4. Compact Brazed Heat Exchanger (BPHE) – For EVI unit only
• Any soldering process done on the heat exchanger needs to be brazed with minimum
45% silver solder at maximum 450°C ( 840°F) when soft soldering and 450-800°C
(840-1470°F) when hard soldering.
• Do not direct flame at BPHE and use wet rag to avoid overheating of BPHE.
5. Rotolock Valve Tightening Torque
• Check the tightness of rotolock connection based on recommended torque setting shown in
below table:
T-CU03- APR22-8
All specifications are subjected to change by the manufacturer without prior notice.
The English text is the original instruction. Other languages are the translations of the original instructions.
Important Note
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