Champion Operating Instructions & Parts Manual
Models 3Z241D
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.
If belts are too 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.
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 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.)
LUBRICATION OF COMPRESSOR
Fill crankcase to proper level as indicated
by oil sight gauge. Keep crankcase filled as
required by usage.
AIR COMPRESSOR OIL
SPECIFICATIONS
Compressors are factory filled with
CHAMPLUB hydrocarbon based recip
lubricant. This is an ISO 100 non-detergent
industrial lubricant with rust and oxidation
inhibitors specially formulated for
reciprocating compressors. It is
recommended this compressor be
maintained using this oil for ambient
temperatures above 30°F.
5
3Z241D
CHAMPLUB synthetic is a premium grade
diester based synthetic lubricant providing
excellent performance in high temperature
applications.
Do not mix oil types,
weights or brands.
"Emulsification of
oil (white milky substance) indicates
unsafe accumulation of moisture and
may be evidence compressor is
oversized for application. Failure to
promptly consult your local distributor,
or Champion Customer Service, can be
grounds to deny warranty."
NOTES:
1. Normal break-in period of Champion
air compressors is 25 hours.
2. For the first 100 hours of compressor
operation, a careful and regular
check of the oil level should be
made. Maintain oil level at the full
line.
CHANGING TO SYNTHETIC
LUBRICANT
(Applies to diester based synthetic lubricant
only).
If changing to synthetic lubricant, the
following steps must be completed.
1. Compressor must run for a 25 hour
break-in period using ChampLub
ISO 100 oil.
2. Thoroughly drain existing oil from
crankcase.
3. Fill crankcase with a full charge of
synthetic lubricant.
4. Run compressor for 200 hours.
5. Stop compressor and thoroughly
drain the synthetic lubricant.
6. Add a full charge of synthetic
lubricant.
7. Compressor now ready to run for
extended period before next lubricant
change.
LUBRICANT
DESCRIPTION
1 Quart Bottle ChampLub
Mineral Lubricant
1 Quart Bottle ChampLub
Synthetic
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PART
NUMBER
P13796A
P137929A