LANDA VHP • 8.913-949.0 • Rev. 5/13
15
PRESSURE
W
ASHER
T
roub
leshooting
Guide
TroubleshooTIng
problem
possIble Cause
soluTIon
pump
noIsy
Air in suction line
Check water supply and connections on
suction line.
Broken or weak inlet or discharge
valve springs
Check and replace if necessary.
Excessive matter in valves
Check and clean if necessary.
Worn bearings
Check and replace if necessary.
presenCe of
WaTer In oIl
Oil seal worn
Check and replace if necessary.
High humidity in air
Check and change oil twice as often.
WaTer DrIppIng
from unDer pump
Piston packing worn
Check and replace if necessary.
O-ring plunger retainer worn
Check and replace if necessary.
Pump protector
Check inlet water pressure.
oIl DrIppIng
Oil seal worn
Check and replace if necessary.
exCessIve
vIbraTIon In
DelIvery lIne
Irregular functioning of the valves
Check and replace if necessary.
relIef valve
leaks WaTer
Wrong nozzle size, debris in nozzle
Clean or replace with correct nozzle.
burner WIll
noT lIghT
No fuel
Open gas valve.
Pilot light is out
Light pilot.
Defective high limit switch
Replace switch.
burner smokes
Stack restriction
See venting under installation (page 7).
pIloT Does
noT lIghT
Manual pilot valve closed
Open pilot valve.
Gas leak in pilot
Call qualified serviceman.
Piezo ignitor
Adjust spark gap. Secure wires.
pIloT IgnITes buT
WIll noT sTay on
When gas CoCk
DIal Is releaseD
Pilot too far away from thermocouple Adjust thermocouple closer to flame.
Thermocouple loose at regulator
safety valve
Tighten to firm fit.
shorT
ThermoCouple
lIfe
Excessive heat from pilot light
Decrease pilot supply gas.
Thermocouple too close to pilot
Adjust thermocouple farther away.
burner CyClIng
on/off
Defective high limit switch
Replace switch.
Washer WIll
noT sTeam
Steam valve closed
Open valve (counterclockwise).
Burner not on
Turn burner switch to "ON" position.
Coil dirty or sooty
See coil maintenance section.
Steam valve clogged
Clean or replace.
Содержание vhp2-1500
Страница 38: ...Form 8 913 949 0 Revised 5 13 Printed in U S A...