Hitachi RPC-3.0FSN3 - 13 CONTROL AND SAFETY DEVICES; Compressor Protection

13 CONTROL AND SAFETY DEVICES
Compressor protection
The compressor is protected by the following devices and their combinations:
1 Pressure switch: this switch stops the compressor when the discharge pressure exceeds the set value.
2 Oil heater: this band-type heater protects against the formation of foam on the oil during cold starts and remains enabled when the
compressor is at a standstill.
Model RAS-8FSXN1E RAS-10FSXN1E RAS-12FSXN1E RAS-14FSXN1E RAS-16FSXN1E
For Compressor
Pressure Switches
Automatic Reset, Non-Adjustable
(each one for each compressor)
High
Cut-Out MPa 4.15
-0.05
4.15
-0.05
4.15
-0.05
4.15
-0.05
4.15
-0.05
-0.15 -0.15 -0.15 -0.15 -0.15
Cut-In MPa 3.20 +0.15 3.20+0.15 3.20+0.15 3.20+0.15 3.20+0.15
Fuse Capacity
3N~ 400V 50Hz A 40 x 2 40 x 2 40 x 2 40 x 2 + 32 x 3 40 x 2 + 32 x 3
Oil Heater
Capacity W 40.8 x 2 40.8 x 2 40.8 x 2 40.8 x 4 40.8 x 4
CCP Timer Non-Adjustable
Setting Time min. 3 3 3 3 3
For DC Fan Module
Fuse Capacity
3N~ 400V 50Hz A 20 x 1 20 x 1 20 x 1 20 x 1 20 x 1
Model RAS-5FSXNH(E) RAS-6FSXNH(E) RAS-8FSXNH(E) RAS-10FSXNH(E) RAS-12FSXNH(E)
For Compressor
Pressure Switches
Automatic Reset, Non-Adjustable
(each one for each compressor)
High
Cut-Out MPa 4.15
-0.05
4.15
-0.05
4.15
-0.05
4.15
-0.05
4.15
-0.05
-0.15 -0.15 -0.15 -0.15 -0.15
Cut-In MPa 3.20 +0.15 3.20+0.15 3.20+0.15 3.20+0.15 3.20+0.15
Fuse Capacity
3N~ 400V 50Hz A 40 x 2 40 x 2 40 x 2 40 x 2 40 x 2
Oil Heater
Capacity W 40.8 x 2 40.8 x 2 40.8 x 2 40.8 x 2 40.8 x 2
CCP Timer Non-Adjustable
Setting Time min. 3 3 3 3 3
For DC Fan Module
Fuse Capacity
3N~ 400V 50Hz A 20 x 1 20 x 1 20 x 1 20 x 1 20 x 1
73
PMML0294A rev.2 - 07/2014
Control and safety devices
ENGLISH
PMML0294A_rev.2_02-2014.indb 73 14/07/2014 12:28:40