5.8 Checking before turning on the power supply
1. Reconfirm that wires are connected correctly.
2. Check the power terminal board and installation face with a 500 V megger to see if it is 1 MΩ, or more.
3. Charge specified condensing unit oil and specified quantity of refrigerant after evacuation. (Refer to Instruction Mnaual
6.1. Charge of condensing unit oil, 6.2. Calculation of the charge quantity of condensing unit oil, 6.3. Replenishment of
condensing unit oil after operation, 6.4. Refrigerant charge)
4. Confirm that the operation switch (CNS2) at the bottom of controller is turned OFF. Remove the cartons and the bracket
before operation.
5. Anti-vibration shipping washers are not used on the compressor. Since this product does not use anti-vibration shipping
washers, it is not necessary to remove them before operation.
6. Turn on the source power supply 6 hours or more before starting the compressor to energize the crankcase without
turning on the operation switch (CNS2).
5.9 Check after Start: after a couple of hours of stable operation following has to be checked
1. Unit current consumption.
2. Rotation of fan (suction through condenser).
3. Check for leakages in refrigerant system.
4. Check superheat.
5. Check oil level.
6. Check for abnormal noises.
7. Check for abnormal vibrations.
8. Suction and discharge pressures
5. System design recommendations
Carton
Carton
Bracket
Operation switch(CNS2)
7 segment display
Fig. 32
44
AB408540130380en-000102
© Danfoss | Climate Solutions | 2023.02
Application Guidelines
