15
Supersedes 07-15-03 Z08-02850 07-03-06 Z08-02850x
REMEDY
POSSIBLE CAUSETROUBLE
ELECTRIC MOTOR DRIVEN PRESSURE CLEANERS
1. Poor cleaning
action.
2. Machine will
not draw
chemical.
3. Low operating
pressure.
4. Excessive,
unusual
noise.
5. Belts slipping.
A. Hard water.
B. Low pressure.
C. Little or no chemical being drawn.
D. Improper chemical.
E. Improper chemical mixture.
F. Low discharge pressure.
A. No chemical solution.
B. Metering valve not open.
C. Chemical line strainer clogged.
D. Air leak in Chemical line.
E. Metering valve clogged.
F. Restrictor orifice too large or missing.
A. Insufficient water supply.
B. Incoming water hose too small.
C. Water supply hose too long.
D. Belt slippage.
E. Worn belt.
F. Spray tip worn or wrong size.
G. Dirty or worn check valves in water
pump.
H. Water supply hose kinked.
I. Inlet filter screen clogged.
J. Motor runs slowly.
K. Air leak in inlet plumbing.
L. Defective water pump.
M. Leaking discharge hose.
N. Chemical metering valve open and
sucking air.
O. Defective unloader.
P. Inlet ball valve not fully open (if so
equipped).
Q. Restricted coil.
A. Pump.
B. Defective motor.
C. Pulleys rubbing.
D. Misalignment of pump &motor
A. Belts too lose.
B. Excessive backpressure.
C. Defective water pump.
A. Connect the machine to a water softener.
B. See “Low operating pressure.”
C. See “machine will not draw chemical.”
D. Obtain proper chemical.
E. Mix chemical per the label. Follow all the mixing,
handling, application, and disposal instructions.
F. See “Low operating pressure.”
A. Replenish supply.
B. Turn metering valve knob to open.
C. Remove screen and cleaan.
D. Tighten all fittings and hoses for the chemical line.
E. Disassemble and clean.
F. Install proper size orifice.
A. The water supply must meet or exceed the
maximum discharge volume specified in the
PERFORMANCE section, and minimum water inlet
pressure specified in the General section of the
MODEL SPECIFICATIONS section.
B. Use larger water supply hose.
C. Use shorter water supply hose.
D. Tighten belt per instructions in MACHINE
MAINTENANCE insert.
E. Replace belt per CLEANER EXPLODED VIEW.
F. Replace with spray tip specified in the GENERAL
section of MODEL SPECIFICATIONS.
G. See PUMP TROUBLE SHOOTING.
H. Straighten hose.
I. Clean water filter screen or hose inlet screen.
J. See “Pump engine starts slow or overheats and
stops.”
K. Tighten all fittings.
L . See PUMP TROUBLESHOOTING.
M. If a water leak is found, DO NOT OPERATE THE
MACHINE. Disconnect the power and replace
hose.
N. Refill chemical, place soap screen in water, or
shut off metering valve.
O. Repair or replace unloader valve.
P. Open inlet ball valve completely. (Handle parallel w/
valve body).
Q. See COIL BACK PRESSURE CHECK on MACHINE
MAINTENANCE.
A. See PUMP TROUBLESHOOTING.
B. Call service technician or take engine to Reapir/
Warranty station.
C. Adjust shields or pulley(s).
D. Realign pump and engine.
A. Tighten per instruction on MACHINE MAINTENANCE.
B. See “Excessive Back Pressure” Below
C. See PUMP SERVICE.
CLEANER TROUBLESHOOTING
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