MAINTENANCE
Disconnect Gas Lines
AVOID INJURY. Extreme cold can cause frostbite. When handling system
components, be careful not to touch any frosted parts.
AVOID INJURY. 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.
AVOID INJURY. Use two wrenches when disconnecting a gas line coupling to
avoid loosening the compressor’s or cold head’s coupling. Gas pressure can
project the coupling with enough force to cause injury.
AVOID GAS LEAKS. Keep the gas line couplings aligned when making or
breaking a coupling connection. Leaks can occur due to the weight of the gas
line or due to a sharp bend near the connection. Crimping from repeated
bending and repositioning can cause damage to gas lines.
PREVENT EQUIPMENT DAMAGE. Do not use a clamp over hose section of
flex gas line.
Disconnect from the Compressor
Tools required: Open-end wrenches
1. Always use two wrenches. Use one wrench to hold the compressor coupling. Use the
second wrench on the gas line coupling nut to break the connection. See Figure 2.
2. After breaking the connection, hold the coupling adapter with one wrench. Remove the gas
line coupling from the compressor coupling with the second wrench. See Figure 3.
3. Screw a dust cap finger tight on to the compressor coupling.
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