Milton Roy Haskel 8AGD-1, Operating And Maintenance Instructions Manual

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Air Driven Gas Booster Compressor, 8” Drive AG Series • OM-12J
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6.4 Test:
Install gauge. Cycle drive at moderate speed until pressure stops rising. Record maximum pressure.
6.5 Analysis:
6.5.1 If the following pressures are achieved, the gas section condition should be considered satisfactory:
Model Number Pressure PSIG Minimum from Atmospheric Inlet
8AGD -5 225
8AGD -14 225
8AGD -30 250
8AGD -60 315
If maximum pressure is less than the minimum, excessive leakage is occurring at the piston seal; and/or
the inlet check; and/or the outlet check.
6.5.2
Symptom Observing Gauge Pointer Repair
A. Fast fall back from maximum. A. Outlet Check
B. Sluggish rise during pressure stroke. B. Inlet Check and/or Piston Seal/Gas Barrel
If symptom B: DISCONNECT DRIVE AIR SO UNIT CANNOT CYCLE.* Apply 80 to 500 PSI clean and dry
air or gas to gas inlet port.

If leakage out vent tube is audible, piston seal is defective and/or gas barrel is scored.

If leakage out vent is barely detectable, inlet check is the problem. Disassemble and repair.
* CAUTION - NEVER CYCLE UNIT WITH PRESSURE APPLIED TO GAS INLET PORT WHEN GAUGE
IS IN OUTLET PORT. GAUGE WILL BE OVERPRESSURED.