Sumitomo SRDK Series - FLOW D

OPERATION MANUAL Sumitomo Heavy Industries, Ltd.
SRDK Series CRYOCOOLER 55
6 TROUBLE SHOOTING FLOW CHART
FLOW D
Cold Head need to be rapaired
(Contact to SHI)
Following infomation will be useful
for failure mode analysis
Cold Head Motor Resistance:
Measure the coil resistance between
the terminal pins of Cold Head Motor.
SPEC.: 250ohm +/- 15%
Cold Head Motor Insulation:
Measure the insulation resistance between
the terminal pins and the Cold Head casing.
SPEC.: >1Mohm
Damage of Cold Head Cilynder:
Warm up and remove the Cold Head
and check the dent, bend or damage of
the Cold Head Cilynder.
Abnormal noise
from Cold Head
Check the Cold Head
Power Cable connection
Correct the error(s)
Abnormal
Normal
Check the Cold Head
Power Cable snapping
Normal
Abnormal
Cold Head Power Cable
need to be replaced
Check the fuses of
the Compressor Unit
Abnormal
Replace the fuse(s)
Normal
Reference;
Operation Manual
Section 2-8
Reference;
Operation Manual
Section 2-8
Reference;
Compressor Unit
Technical Insuruction
Section 3-2
Reference;
Compressor Unit
Technical Insuruction
Section 3-2
Abnormal noise
from Compressor Unit
Cold Head need to be rapaired
(Contact to SHI)
Pressure relief valve operates
Normal
Adjust the filling pressure
In case the failure will be reproduced,
the system needs to be repaired
(Contact to SHI)
Re-start the Compressor Unit
< For CSW-71D >
Check the input power voltage
and frequency setting of
the Compressor Unit
Normal
Abnormal
Adjust the voltage setting
Check the user's power source
(Fuse(s), circuit breakers,
capacity and circuit wiring)
Abnormal
Correct the error(s)
Normal
Reference;
CSW-71D
Technical Insuruction
Section 2-2
Reference;
CSW-71D
Technical Insuruction
Section 2-2
Reference;
Compressor Unit
Technical Insuruction
Section 1-1, 2-2
Reference;
Compressor Unit
Technical Insuruction
Section 1-1, 2-2
Check the flex line connections Abnormal
Correct the error(s)
Reference;
Operation Manual
Section 2-7
Reference;
Operation Manual
Section 4-1-1, 5-4