Main Safety Devices - Hitachi CENTRIFUGAL VRF RASC-HNPE Serie Manual De Instrucciones

MAIN SAFETY DEVICES

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.0 - 11/2015
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
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