User's Manual Rev B / February 2021 / M125 Helium Compressor
97-00020-000
16
Problem
Possible Cause
Corrective Action
The compressor On/Off
switch
(SW1) will not remain in
the ON position.
1
The safety interlock switch (SW2) is
open. This will happen if the top
cover of the unit is removed.
2
Thermal protection switch (TS1
and/or TS2) is open.
3
High current has activated the trip
switch in the compressor’s On/Off
Switch.
1
Securing the compressor cover may
correct the problem. If not, check for
proper operation of safety interlock
switch (SW2) located in the top right
side of the electronic control chassis.
2
Confirm that switch TS1 and/or TS2 is
closed.
3
Contact the Trillium US Inc. service
department for assistance Compressor
stops after several minutes of operation
and remains off.
Compressor stops after
several minutes of
operation and remains
OFF.
1
High temperature of the compressor
caused by insufficient cooling water
(for water-cooled model), resulting
in the opening of thermal protection
switch TS1 and/or TS2). For air-
cooled model, the ambient
temperature is too high.
2
When the compressor is not in
operation, cold cooling water was
left running through the compressor.
3
Insufficient helium static pressure.
4
High temperature helium gas tripped
the thermal protection switch (TS1).
5
Low power source voltage.
6
Mechanical seizure.
1
Confirm that sufficient cooling water
(for water-cooled model) is flowing to
the compressor. For air-cooled model,
provide additional cooling to the
surrounding environment.
2
Turn the compressor on and off for
several times to allow the oil
temperature to rise.
3
Add helium, using the procedure
described in Section 8.4.1.
4
Check for proper cooling of the
compressor unit.
5
Confirm that power source voltage is
correct.
6
Contact the Trillium US Inc. service
department.
8
Maintenance
8.1
Maintenance Personnel Requirements
Only trained and qualified personnel should perform the maintenance procedures described in this section. All other
maintenance work must be performed by Trillium US Inc. personnel in the factory. Please contact Trillium US Inc. to make
arrangement for such work. See contact information in Section 2.2.
8.2
Removing the Compressor from Service: Removal, Transport and Storage
It is recommended that the Model 125 compressor be removed from service when carrying out the maintenance duties
described in Section 8.3.
To remove the compressor unit from service, do the following:
1.
Turn off the compressor unit by pressing the OFF button
2.
Switch off the main power supply to the compressor
3.
Separate the compressor unit from the main power source
4.
Allow coolant to continue circulate for at least 10 more minutes (for water-cooled Model.
5.
Allow the compressor load (cryopump, cold head, etc.) to warm up before detaching helium flex lines
