Maintenance
AVOID CONTAMINATION. Follow the charging and venting procedure to
prevent reversed flow of system gas. Do not charge through the supply coupling.
Do not vent through the return coupling. Reversed flow can contaminate the
system with compressor oil.
AVOID A MALFUNCTION. Repeatedly charging the system with helium gas
rather than locating and repairing gas leaks may cause a malfunction. Impurities
are introduced at an abnormal rate and can freeze in the cold head.
AVOID GAS LEAKS. Check the condition of the gasket seal on the male half of
each Aeroquip coupling. Be sure the gasket seal is in place and the sealing
surfaces on both the male and female halves are clean before connecting.
Replace the gasket seal if it is damaged or missing.
AVOID A MALFUNCTION. Do not allow air to get into the system. Moisture from
the atmosphere can seriously degrade cold head performance.
Air Filter Cleaning or Replacement
Side panel air filters should be cleaned or replaced when dirty.
1. Remove filters from side panels.
2. Clean with soap and water.
3. When dry, reinstall side panels.
Replace filters when they are damaged or can no longer be cleaned.
Adsorber Replacement
Tools required: Open end wrenches 17 mm, 1", 1 1/8", 1 3/16"
#2 Phillips screwdriver
The absorbers in the HC-4A Zephyr
®
Series Air-Cooled Compressor must be replaced every
30,000 operating hours. A used adsorber has no salvage or repair value. Venting the
compressor is not required when replacing the adsorber because the gas line couplings are
self-sealing.
Adsorber Removal
1. Stop the compressor and disconnect the power from the compressor.
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