PREVOST X3-45 COMMUTER User Manual

SECTION 22: HEATING AND AIR CONDITIONING
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
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4.10 HOT WATER PNEUMATIC VALVE
No maintenance is needed unless a malfunction
occurs. Refer to Prevost parts manual for
available service kits. Valve is normally closed.
FIGURE 39: PASSENGER’S UNIT PNEUMATIC HOT
WATER VALVE – TYPICAL CUT-OUT VIEW
4.10.1 Valve Troubleshooting
PROBLEM PROCEDURE
Valve fails to close
1. Check electrical supply with
a voltmeter. It should agree with nameplate
rating.
2.
Check pressure at pilot solenoid valve inlet. It must be at least equal to the
minimum pressure stamped on the nameplate. It should not go below
minimum while valve is operating.
Valve fails to open 1. Che
ck that the closure member assembly, and that main actuator and
cylinder springs are free to travel.
2.
Check that there is no restriction to the air escaping from the actuator
casing.
3. Make sure that pilot solenoid valve operates properly.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in