© Glenco Air & Power Pty Ltd
Do not tamper with the safety valve. It is designed to automatically release air if the tank pressure
exceeds a pre-set maximum.
7.8 Air Tightness
While the air receiver tank is pressurised to at least 650 kPa (94 psi) and the compressor is switched
off, listen for any audible air leaks. Squirt soapy water around any suspect joint and watch for
bubbles indicating a leak.
De-pressurise the air receiver tank and all connected air hoses or air piping fully before commencing
any repairs.
Disassemble the leaking joint and clean off all traces of thread tape or sealant using a wire brush.
Apply PTFE thread tape or Loctite® 243 liquid sealant to the male threaded connection before
reassembling and tightening the joint. Allow at least 30 minutes for the liquid sealant to cure, if used.
Re-pressurise the air receiver tank and check that the air leak has been rectified before putting the
unit back into normal operation.
7.9 V-Belt(s)
V-belts will stretch in normal use and more particularly so on petrol and diesel engine-driven models.
When properly tensioned, a 2.25 kg (5 lb) force applied to each V-belt midway between the engine /
motor and pump pulleys will cause a deflection of about 9.5 mm (3/8”) to 12.7 mm (1/2”).
The drive guard must first be removed before V-belt tension can be checked or adjusted. If tension
adjustment is necessary, loosen the four fasteners holding the engine or motor to the baseplate.
Then either move the engine or motor away from or closer to the pump to increase or decrease V-
belt tension, respectively, and retighten the hold-down fasteners. Always use a straight edge to
check that the engine / motor and pump pulleys are properly aligned and the V-belt(s) runs straight.
Do not over-tension the V-belt(s).
V-belts of the same nominal size can vary in length from one make to another. Thus, for compressors
with two or more V-belts, it is essential to replace the entire complement of them when necessary
with a full set of the same size and make.
Always refit the drive guard before operating the compressor.
Note: The engine or motor pulley has been installed onto its shaft with a high strength Loctite®
retaining compound and may need to be heated prior to removal. It may also be necessary to use a
puller tool to remove the pulley.
7.10 Cleaning
Switch off the air compressor and use compressed air to blow dust and foreign matter off the
compressor pump, motor or engine, piping and air receiver tank. Wear eye and ear protection while
undertaking this task.
Oil and grease marks should be cleaned off using mild household surface cleaner and a soft rag. Do
not use abrasive cleaners or strong solvents that can damage the compressor’s paint finish.
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