Ulvac C30MVER, Installation, Operation, Maintenance And Troubleshooting Instructions

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Section 5 Operation
that either the following faults has occurred; reversed phase of the input power cable, open
phase or low voltage.
Figure 5-3 shows the display status described above.
If the phase is reversed or open, rewiring of the input power cable is required.
First, turn OFF the breaker for the compressor at the equipment side and cut off the power
supply. Then check the order and colors of the wires of the input power cable to ensure
that they are wired properly. If they are not correct, rewire them properly.
After the correction, power-on the compressor from the equipment side and check the STS
indicators. If all STS indicators light up even though the phase sequence is correct, check
if the power supply voltage and input power cable is normal or not.
Besides these statuses described above, if one of the STS indicators lights up and/or the
buzzer sound does not stop, refer to “Section 8 Troubleshooting” to solve the problem.
WARNING
There is a danger of hazardous voltage. Only qualified electrical personnel familiar with the
construction and risks of this equipment should perform procedure above.
Figure 5-2 Ready for operation
Figure 5-3
（４）
Operation
Start operation of the compressor by remote
function. Refer to “Section 2.6 Remote
functions” for operation method by remote
Reversed phase or open phase
５） Operation status display
isplay during
umber of the
refrigerator for C30MVR).
function.
（
Figure 5-4 shows a status d
operation (C30MVR). While the compressor
is in operation, RUN indicator lights up as well
as the appropriate indicator(s) for
refrigerator(s) which is in operation (CH1
indicator for C30VR and CH1, CH2, and CH3
indicators depends on the n
Failure to observe this precaution could result in severe bodily injury or loss of life
Figure 5-4 Status display during
C30MVR operation
ULVAC CRYOGENICS INCORPORATED 5-3