Ulvac C10T, Instruction Manual

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Compressor Unit Instruction Manual
ULVAC CRYOGENICS INCORPORATED 6-3
b. If the compressor unit is not running, replenish it with pure helium gas until it
reaches the static pressure described in the compressor instruction manual.
CAUTION
If helium gas has been charged more than the prescribed pressure of 1.9MPaG or more,
the pressure relief valve on the refrigerator may be going to work. Therefore charge helium
gas slowly so that the pressure relief valve should not operate. On the other hand, the
pressure relief valve in the compressor unit is set at 2.5MPaG.
6. Close the charge valve after charging helium gas.
7. Close the regulator and remove the charging hose from the charge inlet.
The replenishment work of the gas for the compressor has been completed with this.