Main Safety Devices - Hitachi CENTRIFUGAL VRF Serie Bedienungsanleitung

MAIN SAFETY DEVICES

Remote Control
Switch Indication
The power source of Outdoor Unit is not
turned ON.
The connection of the remote control cable
No indication
is incorrect.
The connecting wires of power supply line
are incorrect or loosened.
The power source of Outdoor Unit is not
turned ON.
The operating line wiring between indoor
Counting number
unit and outdoor unit is not connected.
of connected units
is incorrect
The connection of control cables between
each indoor units are incorrect. (When
one remote control switch controls multiple
units)
Instructions fot the recovery when the fuse of the transmission circuit is blown out:
1
Correct the wiring to the terminal board.
2
Set the 1st pin of DSW7 on the indoor unit PCB to ON.
12 MAIN SAFETY DEVICES
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Compressor and fan motor protections
The following devices and their combinations protect the compressor and fan motor.
High-pressure switch
Oil heater
Fan motor protection
High pressure switch for
compressor
Fuse
Crankcase heater
CCP Timer
Setting Time
Fan Motor Fuse
Internal Thermostat for fan motor
Fuse capacity on PCB
22 PMML0399B rev.1 - 07/2016
Wrong Portions
This switch cuts out the operation of the compressor when the discharge pressure exceeds the setting.
This band heater protects against the oil carry-over during the cold starting, as the band heater is energized
while the compressor is stopped.
Internal thermostat that is embedded in the fan motor winding: this internal thermostat cuts out the operation
of the fan motor when the temperature of the fan motor winding exceeds the setting.
Model
Type
Cut-Out
Cut-In
3N~ 400V 50Hz
Output
Cut-Out
Cut-In
Inspection Points after Power Source OFF
1
Connecting Points of Remote Control Cable terminal board of Remote
Control switch and indoor unit.
2
Contact of Terminals of Remote Control Cable
3
Connection Order of each Terminal Board
4
Screw Fastening of each Terminal Boards.
5
Dip Switch Setting on Printed Circuit Board
6
Connecting on the PCB
7
This is the same as item 1, 2 , and 3.
RASC(4-6)HNPE
Automatic Reset, Non-Adjustable (each one for each compressor)
-0.05
MPa 4.15
-0.15
+0.15
MPa 3.20
-0.15
a 20 x 2
W 52.0
-
min. 3
a 10 x 2
ºC 165 ± 10
ºC 130 ± 15
a 5.0
RASC-(8/10)HNPE
-0.05
4.15
-0.15
+0.15
3.20
-0.15
40 x 2
40.8
Non-Adjustable
3
10 x 2
165 ± 10
130 ± 15
5.0