PREVOST X3-45 Multiplex User Manual

11
1. Compressor passes A. Restricted air intake. A. Check engine air cleaner and replace if
excessive oil as evidenced necessary. Check compressor air inlet for kinks,
by presence of oil at excessive bends and be certain inlet lines have
the exhaust ports of minimum specified inside diameter. Recommended
valving. maximum air inlet restriction is 25" of water.
B. Restricted oil return to B. Oil return to the engine should not be in any way
engine. restricted. Make certain oil drain passages in the
compressor and mating engine surfaces are
unobstructed and aligned. Correct gaskets must
be used. Special care must be taken when seal
ants are used with, or instead of, gaskets.
C. Poorly filtered inlet air. C. Check for damaged, defective or dirty air filter on
engine or compressor. Check for leaking, damaged
or defective compressor air intake components
(e.g. induction line, fittings, gaskets, filter bodies,
etc.). The compressor intake should not be
connected to any part of the exhaust gas
recirculation (E.G.R.) system on the engine.
D. Insufficient compressor D. For water-cooled portions of the compressor:
cooling (compressor runs 1. Check for proper coolant line sizes. Minimum
hot). recommended size is 3/8" I.D. tubing.
2. Check the coolant flow through the compressor.
Minimum allowable flow is 2.5 gallons per
minute at engine governed speed. If low cool
ant flow is detected, inspect the coolant lines
and fittings for accumulated rust scale, kinks
and restrictions.
3. Water temperature should not exceed 200
degrees Fahrenheit.
4. Optimum cooling is achieved when engine
coolant flows, as shown in Figure 8 of this
manual.
E. Contaminants not being E. Check reservoir drain valves to insure that they
regularly drained from are functioning properly. It is recommended that
system reservoirs. the vehicle should be equipped with functioning
automatic drain valves, or have all reservoirs
drained to zero (0) psi daily, or optimally to be
equipped with a desiccant-type air dryer prior to
the reservoir system.
COMPRESSOR TROUBLESHOOTING CHART
SYMPTOMS CAUSE
REMEDY

PREVOST X3-45 Multiplex Specifications

General

Length	45 ft
Width	102 in
Engine	Volvo D13
Horsepower	500 hp
GVWR	54, 000 lbs
Height	146 in
Sleeping Capacity	Varies based on floor plan
Water Capacity	Varies based on floor plan