Sinclair SCV-750EB Service Manual page 32

For SCV-750EB and SCV-1400EB:
Component
Water pump
Inverter compressor 1
Inverter compressor 2
Inverter fan1
Inverter fan 2
Electronic expansion valve
Electronic expansion valve
Electronic expansion valve
Four-way valve
Solenoid valve (defrost)
Solenoid valve (by pass)
Solenoid valve (injection)
Water flow switch
Water flow switch heater
Crank case heater
For SCV-1800EB:
Component
Inverter compressor
DC fan motor
Electronic expansion valve
Four-way valve
30
75kW
Wiring diagram label
●
PUMP
●
BP1
●
BP2
●
FAN1
●
FAN2
●
EXV-A
●
EXV-B
●
EXV-C
●
ST1
●
SV5
●
SV6
●
SV8A/B
●
Water-SW
●
CCH
Wiring diagram
label
BP1/2
FAN
EXV
ST1
140kW Control functions and states
Non-standard component: After the pump is turned on for 2
minutes, detect the water flow switch continuously. The
●
compressor can be started only after the water flow is
normal.
Control the outlet water temperature. The operating
●
increased and decreased frequency is 1Hz/s, and is executed
●
according to the starting platform.
Control According to the exhaust pressure of the outdoor
●
unit, the initial target windshield is operated for the first
●
60s, and then correct every 20-60s.
Step from 0 to 480. Controlled according to discharge
●
temperature superheat.
●
Step 480P
Step from 0 to 480. Controlled according to temperature
●
difference between economizer plate heat exchanger inlet
and outlet.
●
Open
●
Closed
●
Open for 600s, then closed.
●
Open
After water pump (field supplied) is turned on for 2min, if
water flow switch is open, water pump stops and water flow
●
error code appears. The compressor can be started after the
water flow is normal.
Controlled according to ambient temperature, water inlet
●
temperature and water outlet temperature.
Controlled according to ambient temperature and discharge
●
temperature.
180kW Control functions and states
Compressor startup program selected according to ambient
●
1
temperature .
Fan run at maximum speed
●
Position (steps) from 0 (fully closed) to 480 (fully open),
controlled according to outdoor ambient temperature,
●
discharge temperature, suction superheat, compressor speed
and refrigerant system pressure.
Off
●
2
.