Landa VLP3-1100 Operator's Manaul page 15

VNG/VLP SERIES PRESSURE WASHER
Care of Main Burner
Due to condensation from heater coils dripping down on
the burners, scale build-up may occur in the burner jet
orifices.
1. TO REMOVE BURNER MANIFOLD FROM WATER
HEATER COIL:
Turn off the gas to the main burner by turning the
knob to the "OFF" position on the gas valve and the
main gas supply.
Disconnect the pilot and ignition lines from the gas
valve. Disconnect union in main burner line below
thermostat. Slide burner manifold out through shell
opening.
2. TO CLEAN BURNER JETS:
Select proper size drill for type gas involved. Use pin
vise to hold drill and ream out each jet orifice.
CAUTION: Do not ream out orifices to a larger size.
If the water heater will be exposed to freezing weather,
an anti-freeze solution should be circulated through the
coil by whatever means are available for the particular
system the water heater is used on.
To Adjust Pressure Regulator
Adjustment of the pressure regulator is not normally nec-
essary since it is preset at the factory. However, field
adjustment may be accomplished as follows:
1. Manometer attachment may be accomplished at the
pressure tap plug.
2. Remove regulator adjustment screw cap (see Fig-
ure 6, page 14).
3. With small screwdriver, rotate adjustment screw
"clockwise" to increase, or "counterclockwise" to de-
crease pressure.
4. Replace regulator adjustment screw cap.
OPERATOR'S MANUAL
15