ULTRASOURCE ULTRAVAC 2100, Owner'S Manual

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ing temperature is reached (at least 20-30 minutes).
4.1.2 Possible Cause
Vacuum system or vacuum piping not leak-tight.
Remedy:
Check hose and pipe connections for possible
leak.
4.1.3 Possible Cause
Wire mesh inlet screen plugged (Ref. 261).
Remedy:
Clean wire mesh inlet screen. Install inlet filter
if problem repeats frequently.
4.1.4 Possible Cause
No oil or not enough oil in oil reservoir.
Remedy:
Shut off the pump, add the necessary oil, or if oil
seems contaminated, drain balance of oil from
pump, exchange automotive oil filter, and refill with
fresh oil.
4.1.5 Possible Cause
Automotive-type oil filter is dirty or clogged
(where applicable).
Remedy:
Replace automotive-type oil filter, exchange oil,
if necessary, and refill with fresh oil.
4.1.6 Possible Cause
Inlet valve plate (Ref. 251) stuck in closed or
partially open position due to contamination.
Remedy:
Disassemble inlet valve and screen. Clean as
required.
4.1.7 Possible Cause
Oil tubing defect and/or leaking. Oil return line
broken on RC model.
Remedy:
Replace or retighten the oil fittings or oil tubing.
Replace only with same size tubing.
4.1.8 Possible Cause
Shaft seal leaking.
Remedy:
Replace the shaft seal following disassembly
and assembly steps outlined in the Maintenance and
Repair Manual. Check the shaft seal. It should have
a spring installed inside and around the shaft sealing
lip.
4.1.9 Possible Cause
Exhaust valve (Ref. 159) is not properly seated
or it is partially stuck open.
Remedy:
Follow disassembly and assembly steps outlined
in the Maintenance and Repair Manual.
4.1.10 Possible Cause
The vanes are blocked in the rotor or are other-
wise damaged.
Remedy:
Free vanes or replace with new ones following
disassembly and assembly steps outlined in the
Maintenance and Repair Manual.
4.1.11 Possible Cause
Radial clearance between the rotor and cylinder
is no longer adequate.
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