Safety
WARNINGS
AVOID ELECTRIC SHOCK. All electrical supply equipment must meet applicable codes and
be installed by qualified personnel. Permit only qualified electrical technicians to open electrical
enclosures, to perform electrical checks or to perform tests with the power supply connected
and wiring exposed. Failure to observe this warning can result in serious injury or death.
Disconnect the power to the compressor before troubleshooting the electrical components or
replacing fuses.
AVOID INJURY. Never use compressed helium gas from a cylinder without a proper regulator.
Overpressure can cause serious injury if the system equipment ruptures.
During operation, some surfaces under the compressor’s cover become hot. Allow the
compressor to cool for 1/2 hour after shutdown before removing the cover for maintenance.
Always wear eye protection when handling pressurized gas lines and other pressurized
equipment. Never apply heat to a pressurized gas line or other pressurized components.
Disconnect gas lines only when the compressor is stopped. Disconnecting the cold head while
it is cold can create excessively high internal pressure as the gas warms. Material failure and
uncontrolled pressure release can cause injury.
Use two wrenches when disconnecting a gas line coupling to avoid loosening the cold head or
compressor coupling. Gas pressure can project the coupling with enough force to cause
serious injury.
The compressor is charged with helium gas. Vent both supply and return Aeroquip couplings to
atmospheric pressure before disassembly, except when disconnecting the adsorber or the gas
lines. Uncontrolled pressure release can cause serious injury.
Always vent a gas-charged component before beginning to disassemble its couplings. Gas
pressure can launch a loose coupling with enough force to cause serious injury.
The adsorber is charged with helium gas. Follow the used adsorber venting procedure for safe
disposal of the used adsorber.
Rotating fan blade can cause injury. Disconnect power before removing compressor covers for
maintenance.
Coolant fluid is a 30% ethylene glycol/water mixture. TOXIC: Do not ingest. Contact local
environmental authorities for proper disposal of ethylene glycol mixtures.
CAUTIONS
PRESERVE YOUR WARRANTY. Modification to equipment without the consent of the
manufacturer will void the warranty.
Specifications require the use of 99.995% pure helium gas. Using a lesser quality of helium can
damage the system and void the warranty.
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