UDOR diaphragmand plunger pumps "pu*p volume" not pres-
sure. Thepressureis determinedby adjustingtherelief valveand se-
NOTE
TO PROTECTAGAINST SERIOUS
INIURY NEVERSPRAY
FLAMMABLE LIQUIDS,ORFLUSH
PUMPWITH FLAMMABLE LIQUIDS!
THIS WILL VOID ANY AND ALL WARRANTIES.
UDOR U.S.A.,
INC.
500
Apollo Drive
Lino Lakes,MN 55014
TEL.
(651)
785-0666
FAX.
(800)732-2670
lecting proper orifice sizeof spraynozzles.
PROBLEM CAUSE REMEDY
.NO PRESSURE
.VERY LITTLE PRESSURE
.PRESSURE
DROPSBELOW
WORKING RANGE WHEN
RELIEFVALVEISOPEN
TOBOOM ORGUN
Plugged strainerx restricting flow.
Suction hoseobstruction.
Collapsed suction hoseinside or
outside tank restricting flow.
Pump drawing air through suction
line hoses or fittings.
Pressure relief valve stuck or worn
Excessive tank foam due to low
tank volume.
Nozzle volume is greater than
pump capacity.
One or more check valves seating
improperly.
1)
?\
3)
4)
5)
6)
/)
8)
. Clean screen.
. Clear obstruction.
o Replacecollapsedhose.
. Examine hoses and fittings, ensure
air tight fit and no leaks.
. Repair or replace relief valve.
. Refill tank
a. Check relief valve adjustment.
b. Reduce nozzle orifice size or
number of nozzles used.
. Clean or replace check valves.
.PRESSURE
GAUGE
FLUCTUATESWILDLY
oEXCESSIVE
PULSATION
1) Pulsationdampenerpressure
toolow or toohigh
2)Pumpdrawingair through
suction
line hosesor fittings.
3) Pluggedstrainer*
restrictingflow.
4) Air not entirelyevacuated
from
pump cavity.
. Adjust pulsation dampener pressure
(Referto pulsation dampener setting
orrPump OperatiOns Sheet.)
. Examine hoses and fittings, ensure
air tight fit and no leaks.
. Clean screen.
. Run pump with an open discharge
to totally evacuate air.
PUMPDOESNOT
DRAW WATER 1) Pump drawing air through suction
line hoses
or fittings.
2) Pluggedstrainerrestrictingflow.
3) Oneor morecheckvalvesseating
improperly.
r Examine hoses and fittingt ensure
air tight fit and no leaks.
. Clean screen.
. Clean or replace check valves.
PUMPOIL HAS MILKY COLOR
OROIL PLUGPOPSOUT. 1) One or more diaphragms have
ruptured . Replace diaphragms.
*NOTE: Only usefilter screens
that arebetween10& 20mesh. Never usea fine filter screen
with a dia-
phragm pump.
Revised
7-1-97
