Operation Control Of The Module - Hitachi SAMURAI Series Service Manual
Water cooled water chillers -modular-r134a-screw type
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Also See for SAMURAI Series:
- Service manual (137 pages) ,
- Service manual (174 pages) ,
- Manual (118 pages)
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2 Control Functions
Run operation
2.4.2 Operation control of the module
1 In the case of remote control
Operation order
Stop order
?
N O T E
It is possible to stop the module by means of the stop switch in the Master module, even if it is in remote operation. It is also possible to
stop by remote controller switch even during local operation.
2 In the case of local control
It is possible to control this product remotely. Follow the procedure below in case that it is absolutely necessary to
control it from the Master module, such as during test run or in servicing.
Operation order
Close the door inside the electrical parts box
Close the door inside the electrical parts box
Operation of compressor starts after compressor delay time has passed
Stop order
49
SMGB0120 rev.0 - 11/2017
Confirm that the cold water inlet/outlet valve is fully open
Power ON
Power ON the pump for cold water circulation
Set the locally installed "Cooling/Heating" switch to "Cooling"
Press the "Run" button
Operation of pump for cold water circulation starts
Operation of compressor starts after compressor delay time has passed
Press the "Stop" button
Confirm that the cold water inlet/outlet valve is fully open
Confirm that the module is being powered ON
Confirm that the pump for cold water circulation is being
powered ON
Set the "local/remote switch" on the setting PCB to "local"
Cooling
Set the "cooling/heating switch" on the seting PCB to
"cooling"
Press the "Run" button
Operation of pump for cold water circulation starts
Press the "Stop" button
The compressor stops
Set the "local/remote switch" on the setting PCB to
"remote"
Preparations for remote control complete
Cooling
Open the door of he electrical
parts box, and the door inside the
electrical parts box, and control
the microprocessor.
Open the door of the
electrical parts box and
control the microprocessor
Open the door inside the electrical parts box
Close the door inside the electrical
parts box, then close the door of the
electrical parts box
2
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Table of Contents
Troubleshooting
