User Guide

Jet-Set JM-2900™
TROUBLE SHOOTING GUIDE continued
Problem Probable Cause Solution
Washer fails to draw detergent.
Detergent metering valve closed, or
valve clogged or defective.
Open detergent metering valve, following procedure in operating
instructions.
Back pressure in hose (when using
additional lengths of pressure hose).
Contact dealer for proper injector size when adding lengths of
hose.
Back pressure in pressure hose (when
using dual lance wand).
Use proper size flood nozzle in dual lance wand (refer to parts
breakdown).
Suction tube not below liquid surface.
Completely submerge suction tube and strainer in detergent
solution.
Clogged or damaged suction strainer. Clean or replace strainer.
Detergent solution too weak. Clogged detergent strainer. Clean or replace strainer.
Air leak in detergent suction tube or
inlet plumbing.
Find air leak and clean or replace parts as necessary.
Detergent solution too concen-
trated.
Original detergent too concentrated. Dilute product as necessary to achieve proper concentration.
Detergent in rinse cycle.
Dual lance wand or adjustable nozzle
holder in open position or chemical
metering valve open.
Close dual lance wand adjustable lance holder to achieve high
pressure. Close detergent metering valve.
Worn or defective internal check valve. Repair or replace check valve or injector parts as necessary.
Dilution of detergent concentrate
during cycle.
Defective check valve in detergent
tank.
Replace parts as necessary.
Unloader cycles. Fitting leaking downstream. Tighten/replace fitting.
Piston or valve spring broken or worn. Replace parts as necessary.
Clogged nozzle. Clean or replace nozzle.
Fluid leaking from body. O-ring worn or cut. Replace part as necessary.
Unloader will not come to pres-
sure.
Foreign particle in valve. Clean or replace valve.
Nozzle worn or wrong size. Replace part as necessary.
Piston or valve worn. Replace part as necessary.
Adjusting nut turned completely into
unloader.
Back off adjusting nut. Extreme pressure spikes.
Clogged nozzle. Clean or replace nozzle.
9
See pages 10 –13 for Parts Lists and Schematic Diagrams.