OPERATION MANUAL Sumitomo Heavy Industries, Ltd.
SRDK Series CRYOCOOLER 36
3-1 PRELIMINARY CHECKS
3 OPERATION
<Warning about electric shock>
This cryocooler includes a high-voltage section. Touching it may result in electric shock.
Handle it with extreme care.
Make sure the power specification of the cryocooler used conforms to the customer's power
supply before using the equipment. Using the cryocooler with a non-conforming power supply
may result in electric shock or malfunction.
If the compressor unit used is the CSW-71D (water cooled, high voltage type), pay attention to
the setting of the applicable input supply voltage. The product is shipped with the input supply
voltage set to 480V. Before installing the equipment, be sure to check your supply voltage and
change it to the appropriate setting if necessary. Operating the equipment with your supply
voltage different from the setting of the compressor unit may result in electric shock or
malfunction.
Do not change the setting of the dial above the main power switch of the compressor unit under
any circumstances. Failing to observe this precaution may result in electric shock.
<Warning about explosion, escape of gas>
This cryocooler (cold head, compressor unit, compressor adsorber, flex lines) contains a high-
pressure (about 1.62 MPa (16.5 kgf/cm
2
G, 235 psig)) helium gas sealed in. Hitting the
equipment with a sharp edge or touching it with a pointed object may cause explosion or escape
of gas. Handle the equipment with extreme care.
WARNING
WARNING
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