Parr Instrument Series 4570 - Manual (Page 15)

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4570 HP/HT Pressure Reactors Parr Instrument Company
ACCESSORIES (continued)
Air Motor
Variable stirring speeds from 300 to 2000
rpm with no spark hazard can be obtained
by replacing the standard motor with an
A388E6 air motor. This motor operates on
compressed air which must be supplied at
40 psig minimum pressure with at least
20CFM available at that pressure. It is
furnished with a speed control valve, oiler,
and muffler.
To operate reactors equipped with an air
motor, connect the air hose to a compressed
air line. Fill the oiler with SAE 10 oil and
adjust the oiler to feed one drop per minute
into the air stream. For long continuous
runs at high speeds, the oiling rate should
be increased to three drops per minute. If
the motor becomes sluggish, flush it with a
non-flammable solvent in a well ventilated
area. Disconnect the air line and muffler
and pour a small amount of solvent into the
inlet port. Rotate the shaft by hand in both
directions for a few minutes; then connect
the air line and run the motor until there is
not further trace of solvent in the exhaust. If
the muffler felts are dirty, wash them in
solvent or replace them. Relubricate the
motor with a squirt of oil into the chamber
and reassemble. If it becomes necessary to
disassemble the motor to replace the vanes,
follow directions given in the instruction
sheet published by the Gast Manufacturing
Corp., Benton Harbor, Michigan.