SiUS341615E
Test Operation
Field Settings
158
3.3
Check Work Prior to Turn Power Supply ON
Check that the installation work for the indoor and outdoor units has been performed in accordance
with the instructions in the Installation Manual.
Check on refrigerant piping /
insulation materials
Check air tight test and vacuum
drying.
Check on amount of additional
refrigerant charge
Check the stop valves for
conditions.
2 in.
Heat the left side of the
terminal for a period of
approximately 15 minutes.
Terminal
Dryer
(1000 W)
Liquid side stop valve
Open
Gas side stop valve
Open
Check the below items.
• Power wiring
• Control transmission wiring
between units
• Earth wire
• Branch switch
• Earth leakage circuit breaker
• Is the wiring performed as specified?
• Are the branch switches and earth leakage circuit breakers wired correctly?
• Is the designated wire used?
• Is the wiring screw of wiring not loose?
• Is the grounding work completed?
• Is the insulation of the main power supply circuit deteriorated?
Use a 500 V megger tester to measure the insulation. (
∗
1)
Do not use a megger tester for other circuits than 400 V or 200 V circuit.
∗
1: Measure to be taken against decreased insulation resistance in the
compressor
If the compressor is left to stand for
an extended period of time after the
refrigerant charge with the stop
valve open and the power supply
OFF, the refrigerant may be mixed in
the compressor, thus decreasing the
insulation resistance.
Heat the compressor as shown on
the right and then recheck the
insulation.
• Is the pipe size proper? Are the design pressures for the gas pipe and liquid
pipe more than 4.0 MPa (580 psi)?
• Is the pipe insulation material installed securely?
Liquid and gas pipes need to be insulated. (Otherwise causes water leak.)
• Have the air tight test and the vacuum drying been conducted according to
the procedure in the Installation Manual?
• Is a proper quantity of refrigerant charged?
∗
When the refrigerant level is insufficient, leave the liquid and gas stop
valves closed and charge with liquid refrigerant via the liquid stop valve
service port. (
∗
Do not charge via the gas stop valve service port. Doing so
will result in error.)
• Is the amount of additional refrigerant charge recorded in the Service
Precaution label?
• Check to be sure the stop valves are under the following conditions.
Summary of Contents for RXYQ-TA Series
Page 1: ...Service Manual SiUS341615E RXYQ72 408TAYDU RXYQ72 408TATJU Heat Pump 60 Hz...
Page 321: ...SiUS341615E Wiring Diagrams Appendix 308 RXYQ96 120TAYDU 2D106439A...
Page 322: ...Wiring Diagrams SiUS341615E 309 Appendix RXYQ144 168TAYDU 2D106440A...
Page 323: ...SiUS341615E Wiring Diagrams Appendix 310 RXYQ72TATJU 3D106435A...
Page 324: ...Wiring Diagrams SiUS341615E 311 Appendix RXYQ96 120TATJU 2D106436A...
Page 325: ...SiUS341615E Wiring Diagrams Appendix 312 RXYQ144 168TATJU 2D106437A...
Page 335: ...SiUS341615E Wiring Diagrams Appendix 322 VAM1200GVJU 3D073270C...
Page 336: ...Revision History Month Year Version Revised contents 02 2017 SiUS341615E First edition...
