With a compact, yet durable and rugged construction, the MOA provides oil-less operation, which ensures that the discharge air remains free of lubricant contamination. It's well suited for noise sensitive environments like medical laboratory applications, due to the low noise and vibration operation. Additionally, the unit requires minimal power consumption and can be used as a compressor or vacuum pump for maximum versatility.
Can water be pumped through my unit?
No, clean dry air only.
What are the small washers between the valve plate and the body for?
They serve as spacing between the retainer plate and the valve plate. They must be kept in the same location to ensure proper alignment.
What kind of oil do I need for my diaphragm unit?
None, Gast diaphragm units are oilless, and do not require oil.
Can I pump combustible gas through my MOA?
No, none of Gast models are designed to pump combustible gases.
My DOA model was sitting on my shelf for a long time, now it will not start.
With the power disconnected from unit, insert a rigid instrument through the grill and rotate the cooling fan a few times. This should loosen the diaphragm and allow the unit to start.
What can I use to flush my diaphragm unit with?
Gast flushing solvent, AH255D. If this is not available you can use electrical contact cleaner.
Can I use the same kit for new style DOA (dome shaped head) as for the old flat head style?
Yes the kit will contain parts for new and old style units.
Can I get new motor brushes for my DC voltage unit?
Yes the brushes can be obtained from Gast distributors. Check website sales & distribution for a distributor near you.
Can I replace the motor on my diaphragm unit?
The motor can not be replaced in the field, the unit should be sent to an authorized service center.
How can I replace the rod assembly in my diaphragm unit?
The rod assembly is not field replaceable, the unit should be sent to an authorized service center.
What does the model number mean?
For an explanation of the Diaphragm model numbers please click here.