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4560 Mini Bench Top Reactors
Parr Instrument Company
Revision 6-28-02
GENERAL MAINTENANCE NOTES
1. Periodically inspect all electrical wiring
and pressure connections for excessive
corrosion. Suspect parts should be
replaced by components only supplied
by Parr Instrument Company.
2. Always use appropriate wrenches on all
fittings and valves. Never use pliers or
pipe wrenches.
3. Head and cylinder service fixtures are
available for convenience and protection
of components during maintenance of
your reactor.
4. A light coating of thread lubricant, such
as Parr High Temperature Anti-Seize
Lubricant (424HC2), applied to the
straight threads and to the nose of coned
adapter will help to obtain a tight joint.
PTFE tape should be used only on all
tapered (NPT) threads not NPS straight
threads.
5. NPT (National Pipe Taper) threads
should not be disassembled any more
than necessary. It will become
increasingly difficult to maintain a tight
seal with these tapered threads if the
joint is made and broken repeatedly.
6. Do not use oil or anti-seize lubricant on
threads or fittings if the vessel is to be
used with oxygen.
7. If your vessel is equipped with a loose
compression ring be sure that it is in
place on the head before attaching any
head fittings. The compression ring
cannot be installed after fittings have
been screwed into the head.
8. Clean all threads and gas passages
thoroughly and remove all tape
fragments when overhauling a vessel.
An ultrasonic bath is excellent for
cleaning metal parts, but do not place a
thermocouple probe, pressure gage, face
seals or ball bearings in an ultrasonic
bath. Periodic cleaning may be
performed on the exterior surfaces of the
reactor stand with a damp cloth. All
electrical power should be disconnected
when cleaning.
9. Routinely inspect cap screws on split ring
closure for lubrication and cleanliness. It
is important to clean and lubricate
periodically so that the required torque is
achieved when tightening the bolts.
10. To operate reactors equipped with an air
motor, connect air hose to a compressed
air line. For best torque and speed
control the piping to the motor should be
at least 1/4” IPS or larger. Fill the oiler
with SAE 10 motor oil and adjust the oiler
feed to 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 no further
trace of solvent in the exhaust. If the
muffler is dirty, replace it. Re-lubricate
the motor with a squirt of oil into the
chamber and reassemble.
11. If servicing assistance is needed, contact
Parr Instrument Company direct at the
address shown on the back of these
instructions.
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