27
OPERATING MANUAL
VERSION 07/2017
ORDER NUMBER DOC 2349369
9
TROUBLESHOOTING
Functional fault
Cause
Remedy
See Chapter
Insufficient product
output
Nozzle too small.
Select larger nozzle.
Product pressure too low.
Increase product pressure.
Gun filter or high-pressure
filter clogged at pump
Clean or replace filter.
Nozzle is clogged.
Nozzle cleaning
/
Filter/nozzle pairing does
not match.
Change filter and/or nozzle.
The valve rod path is too
short.
Replace valve rod unit.
See service
manual
Poor spray pattern
Nozzle worn.
Replace nozzle.
Product pressure too low.
Increase the product pressure at
pump.
The product viscosity is too
high.
Dilute the spray product
in accordance with the
manufacturer's instructions.
The nozzle is partially
clogged.
Nozzle cleaning
Product emission on
nozzle holder
Seal of nozzle holder
or anti-contact guard
damaged.
Replace seal or set of seals.
Product emission from
gun body
Packing in the valve rod
unit leaky
Replace valve rod unit.
See service
manual
Product emission from
the nozzle
(Gun will not shut off
correctly)
Valve ball is damaged.
Replace valve rod unit.
See service
manual
Valve seat is damaged.
Replace intermediate piece.