Delta DTH2450-1 Instruction Manual page 14

PROBLEM
Will not draw
chemicals
No or low
pressure
(after period of
normal use)
Water leaking at
gun/spray wand
connection
Water leaking
at pump
Pump Pulsates
A00521 A00521 A00521
CAUSE
Spray wand not in low pressure.
Chemical filter clogged.
Chemical screen not in cleaning
solution.
Chemical too thick.
Pressure hose is too long.
Chemical build up in chemical
injector.
Worn seal or packing
Worn or obstructed valves.
Worn unloader piston.
Worn E-Z start valve.
Worn or broken o-ring.
Loose hose connection.
Loose connections.
Piston packings worn.
Worn or broken o-rings.
Pump head or tubes damaged
from freezing.
Nozzle obstructed.
See How to Use Spray Wand
instructions in the Operation
Section.
Clean filter.
Make sure end of chemical hose
is fully submerged into cleaning
solution.
Dilute chemical. Chemical should
be the same consistency as water.
Lengthen water supply hose
instead of high pressure hose.
Have parts cleaned or replaced
by AWSC.
Have replaced by AWSC.
Have replaced by AWSC.
Have replaced by AWSC.
Have replaced by AWSC.
Check and replace.
Tighten.
Tighten.
Have replaced by AWSC.
Have replaced by AWSC.
Have replaced by AWSC.
See Nozzle Cleaning instruction
in the Maintenance section.
AWSC= Authorized Warranty Service Center
14- ENG
CORRECTION