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
6
4. Operation and Safety Considerations
NOTE: Before operation be sure the gas supply has been turned on to the booster inlet and allowed to
flow through and equalize into the downstream system and/or receivers.
4.1 Starting the Drive
Turn on the drive air (or gas) gradually. The pump will automatically start to cycle with the application of
approximately 25 psi to the inlet and air pilot.
NOTE: On initial start, or if unit has been idle for an extended period of time, the starting drive pressure
may have to be somewhat higher.
Observe the buildup in output pressure with a conveniently located gauge rated for the maximum system
pressure.
Maximum output pressure can be automatically controlled by a Haskel air pilot pressure switch or similar
device backed up by a safety relief valve. (Refer to current catalogs for complete details.) In some
applications, the unit may also be allowed to simply pump-up to its maximum pressure and stall - provided
that ample strength allowance for outlet system piping and valves has been included.
Leaving the drive and liquid sections pressurized for extended periods is not detrimental to the unit but
may be inadvisable for safety considerations depending on the installation.
5. Maintenance
5.1 General
WARNING: Use any cleaning solvent in a well ventilated area. Avoid excessive contact with skin. Keep
away from extreme heat and open flame.
Disassemble equipment only to the extent required to repair or replace defective parts. Do not disturb
unaffected component parts or plumbing connections.
NOTE: Detailed assembly drawings particular to your specific model have been included as a part of
these maintenance instructions. Consider these maintenance instructions as general information while
the assembly drawings reflect detail information, directly related to your particular drive/pump unit.
Certain assemblies, rarely requiring disassembly for servicing, have been assembled with Loctite CV
(Blue) No. 242, as a locking compound. (Refer to NOTES column in assembly drawing.) If disassembly of
these parts is essential, they should be carefully cleaned and then reassembled using Loctite CV. Use
care to avoid getting compound into other joints or moving parts.
It is good maintenance practice to replace bearings, seals, o-rings and backup rings (refer to NOTES
column on applicable assembly drawing for seal kit (s) available) whenever equipment is opened for part
inspection and/or replacement.
Air Drive Section
Parts removed for inspection should be washed in an aqueous based industrial cleaner, free of V.O.C.,
such as Blue Gold or equivalent. Avoid use of Trichlorethylene, Perchlorethylene, etc. Such cleaners will
damage seals and finish on air barrel and end caps.
Gas Pumping Section
Parts should preferably be washed in an aqueous based industrial cleaner, free of V.O.C., such as Blue
Gold or equivalent.
Inspect moving parts for evidence of wear (scoring or scratches) due to foreign material. Inspect all
threaded parts for crossed or damaged threads. Replace part if thread damage exceeds 50 percent of
one thread, if less than 50 percent, chase threads with appropriate tap or die.
5.2 Cycling Valve Assembly
While continually referring to your detailed assembly drawing, disassemble cycling valve assembly in the
following manner: