Ulvac UMP-40W, Instruction Manual

Page: 41 / 52

ULVAC CRYOGENICS INCORPORATED 35
Maintenance and Inspection
Daily inspection
Check for the following items for daily inspection.
(1) The operation sound generated from each unit is normal.
(2) The pressure and flow rate of nitrogen gas are 0.2 MPa and 26
～
30NL/min. respectively.
(3) The He gas pressure of C30PMVRT is within the proper range.
When suspended: 1.26 – 1.34 MPa
When in operation: 1.70 – 2.20 MPa
(4) The alarm light of UMP-40W is not lit.
Periodical maintenance/inspection
(1) C30PMVRT
Parts
Per
12,000hr
Per
24,000hr
Coldhead *1
✓
-
Oil adsorber -
✓
(2) GN-30i
Parts
Per
8,000hr or
2 years
(Shorter)
Per
20,000hr
GN-30i Air Compressor
✓
-
GN-30i Filter *2
✓
-
GN-30i Solenoid valve -
✓

1. Check the total operation time of UMP-40W with the hour meter on operation display.

2. The total operation time of GN-30i is shown in the sequencer display in the electric circuit
of UMP-40W. The operation light of GN-30i blinks when the maintenance time approaches.
*1… Maintenance parts are normally to be replaced “Once every 12,000 hours of operation”,
however, even if 12,000 hours is not reached, replace them with new ones once every 5
years as the internal parts may become deteriorated.
*2… In addition to the table above, clean the filter of the air opening of GN-30i once a month.
NOTE : For coldhead and oil absorber, it is requested to return a complete set of parts (after
replacement) to us. Please return the set of parts after the replacements.