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Champion Operating Instructions & Parts Manual
Models 3Z182F and 3Z183F
MAINTENANCE (Continued
c. Apply pressure with finger to one belt
at midpoint span. Tension is correct if
belt can be depressed
3/8 to 1/2". Make further adjustments
if necessary.
d. Check the alignment of pulleys.
Adjust if necessary.
e. Tighten mounting hardware to secure
motor on base.
f. Re-install guard and secure
with bolts.
Never operate unit
without belt guard in place. Removal
will expose rotating parts which can
cause injury or equipment damage.
EVERY 90 DAYS OR 500 HOURS
1. Change crankcase oil. Use type and
grade oil as specified in the
section on "Compressor Oil
Specifications
2. Check entire system for air leakage
around fittings, connections, and
gaskets, using soap solution and
brush.
3. Tighten nuts and capscrews
as required.
4. Check and clean compressor
valves, as required. Replace parts
when worn or damaged.
Valves must be
replaced in original position. Valve
gaskets should be re-placed each
time valves are serviced.
5. Pull ring on all pressure relief valves
to assure proper operation.
GENERAL MAINTENANCE NOTES
)
BELTS
Drive belts must be kept tight enough to
prevent slipping. If belts slip or squeak,
see V-belt maintenance in preceding
section.
tight, overload will be put on motor
and motor bearings.
COMPRESSOR VALVES
If compressor fails to pump air or seems
slow in filling up tank, disconnect unit
from power source, remove valves, and
clean thoroughly, using compressed air
or a soft wire brush. After cleaning,
exceptional care must be taken that all
parts are replaced in exactly the same
position and all joints must be tight or
the compressor will not function
properly. When all valves are replaced
and connections tight, close hand valve
at tank outlet for final test. Valve
gaskets should be replaced each time
valves are removed from pump.
CENTRIFUGAL UNLOADER AND
PRESSURE RELEASE VALVE
The centrifugal unloader is operated by
two governor weights. It is totally
enclosed and lubricated from the
crankcase of the compressor. When
compressor starts the governor weights
automatically open compressing the
main spring, allowing the unloader
release valve to close. When the
compressor stops, the main spring
returns the governor weights to normal
position opening the pressure release
valve and unloading the compressor.
5
This prevents overloading the motor
when starting. If air continues to escape
through the governor or unloader
pressure release valve while operating,
this is an indication that the release
valve is not closing tightly and may be
held open by foreign substance which
has lodged on the seat. In order to
correct this, remove the governor
release valve cap, giving access to
If belts are too
release valve spring and ball. Clean
thoroughly and return parts in the same
order in which they were removed.
Loose drive belts can also cause
unloader to leak by preventing the
compressor from reaching proper speed.
(See "BELTS" above.)
THE INTERSTAGE PRESSURE
RELIEF VALVE
against interstage over pressure and is
factory set for maximum pressure of .
75 PSI.
IMPORTANT: Do not reset.
If the pressure relief valve pops, it
indicates trouble. Shut down the unit
immediately and determine and correct
the malfunction. Inspect the head
valves. Serious damage can result if not
corrected and can lead to complete
destruction of the unit. Tampering with
the interstage pressure relief valve, or
plugging the opening destroys the
protection provided and voids all
warranty.
LUBRICATION OF COMPRESSOR
Fill crankcase to proper level as
indicated by oil sight gauge. Keep
crankcase filled as required by usage.
3Z182F and 3Z183F
is provided to protect
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