SINGLE SCREW CHILLERS IMM
26
Engineered for Flexibility and Performance
7. Matters to be Confirmed before Test Run
To ensure personal and equipment safety, the items listed below shall be inspected before
performing test run.
It is necessary to read [4.Safety] to ensure safety for equipment.
If the inspection results failed to conform to relevant requirements, the test run shall not be
performed, and a negotiation with Daikin shall be conducted.
7.1 Inspect the power circuit (please confirm before it being powered up)
A) Insulation resistance of power circuit
It must be confirmed before being powered up.
It shall not be below 2MΩ in 380V/3P condition.
B) Power should be connected correctly.
Ensure no reverse phase, lacked phase.
Please make sure power cable connection point no misplacement.
C) Chiller housing should be grounded.
Ensure correct grounding as per outside wiring requirements.
D) Control cabinet interior must be cleaned.
Clear the dust produced during installation and electrical works before the cabinet being
powered up.
7.2 Acknowledgement of cables (before being powered up)
A) Interlock circuit of pump should be connected correctly.
Please check interlock signal of pump.
This contact point is very important as one of protection device.
B) Ensure correct contact point position.
Ensure no-voltage loop is not connected with voltage loop.
Double check contact capacity is no problem.
C) Check if cables connection is correct.
Please ensure no cross connection or miss-connection.
D) Ensure terminals are tight.
Please ensure terminals not tilted.
Possible looseness may cause cross input/output signal, even cause fire hazard.
7.3 Power supply check
A) Power supply should meet requirements
According to all parameters on nameplate, please confirm voltage is within ±10% of nominal
voltage, frequency is within (50) ±2%Hz, and phase voltage unbalance is within ±2% of rated
voltage.
