Speedaire 3JR85 Manuel D'utilisation page 10

Speedaire Operating Instructions
Speedaire
Compressors
Troubleshooting Chart (Continued)
E
N
Symptom
G
Motor hums and runs slowly or
L
not at all (Continued)
I
S
H
Reset mechanism cuts out
repeatedly or fuses blow
repeatedly
Tank does not hold pressure
when compressors off and the
shut off valve is closed
Pressure switch continuously
blows air out the unloader valve
Pressure switch does not release
air when the unit shuts off
Excessive vibration
Manufactured for Dayton Electric Mfg. Co.
Niles, Illinois 60714 U.S.A.
Portable Air
®
Possible Cause(s)
3. Low voltage
4. Malfunctioning pressure
switch - contacts will not
close
1. Too many devices on same
circuit
2. Incorrect fuse size or
circuit breaker
3. Malfunctioning check
valve
4. Pressure switch set too
high
5. Loose wiring
6. Malfunctioning motor
1. Worn check valve
2. Check all connections and
fittings for leaks
3. Check tank for cracks or
pin holes
Malfunctioning check valve
Malfunctioning unloader
valve on pressure switch
1. Loose fasteners
2. Belt needs replaced
3. Belt alignment
10
Corrective Action
3. Check with voltmeter, check reset switch on motor. If
reset switch trips repeatedly, find and correct the cause.
See next item
4. Repair or replace pressure switch
1. Limit the circuit to the use of only the air compressor
2. Be sure that fuses or circuit breakers are rated properly
3. Replace check valve
Do not disassemble check valve
with air pressure in tank
4. Adjust or replace
5. Check all electrical connections
6. Replace motor
1. Replace check valve
Do not disassemble check valve
with air pressure in tank
2. Tighten
3. Replace tank. Never repair a damaged tank
Replace the check valve if the unloader valve bleeds off
constantly
Do not disassemble check valve
with air pressure in tank
Replace the pressure switch if it does not release the
pressure for a short period of time when the unit shuts off
Do not disassemble pressure switch
with air pressure in tank
1. Tighten
2. Replace with correct size
3. Align flywheel and pulley
®