DESCRIPTION
Components
Adsorber - The adsorber removes any oil and moisture the gas is carrying which did not drop
out in the separator. The adsorber has a finite life and must be replaced every 30,000 operating
hours.
Atmosphere Relief Valve [ARV] – The pressure relief valve prevents the compressor from
operating at an unsafe pressure by venting to the atmosphere.
Bulk Oil Separator - Removes much of the entrained oil from the gas stream. This unit needs
no servicing or replacement.
Cold Head Power Receptacle - Mounted on the front panel for connecting a cable to supply
electrical power from the compressor to the cold head.
Compressor Capsule - Helium, scroll compressor with a hermetically sealed motor.
Compressor High Temperature Motor Protector Switch - Located inside the compressor
motor, the switch senses compressor motor temperature and stops the motor if the temperature
is too high. The switch resets after cool down.
Electrical Chassis - The electrical box contains electrical components and connections and
distributes power to all system circuits.
Final Oil Separator - Removes most of the remaining entrained oil from the gas stream. This
unit needs no servicing or replacement.
Fuses – Three (3) time delay, class CC fuses, located inside the electrical chassis box, protect
the transformer. Three (3) time delay, 5x20 mm, IEC Type T fuses, located on the printed
circuit board inside the electrical chassis box, protect the cold head supply circuit.
Heat Exchanger - Uses water to cool the high-pressure helium refrigerant and the
compressor’s lubricating oil.
Helium Charge - A size 4, male (4M), Aeroquip coupling located on the front of the compressor
is used for charging or venting helium gas refrigerant.
Helium Supply and Helium Return Pressure Couplings – Both supply (high pressure) and
return (low pressure) are self-sealing, size 8, male (8M), Aeroquip, bulkhead couplings and are
the points of connection on the front panel for the gas lines.
Internal Relief Valve [IRV] - The internal relief valve opens to allow the compressor to be
operated in the stand-alone mode or when the system gas lines are disconnected, to avoid
overloading the motor.
Mains Power Switch - Mounted on the front panel, it provides a means to disconnect power
and it protects the compressor from electrical overload. This device is labeled Main Power.
Oil Capillary - The capillary returns oil collected in the oil separator sump to the compressor for
recycling.
Oil Filter - Filters in the oil lines protect the oil return capillary and the orifices.
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