Water Source; Water Connection; Gas Pressure - Landa VLP3-1100 Operator's Manaul

VNG/VLP SERIES PRESSURE WASHER

Water Source:

Water source for machine should be supplied by a 5/8"
I.D. garden hose with a city water pressure of not less
than 30 psi. If the water supply is inadequate, or if the
garden hose is kinked, the machine will run very rough
and the burner will not fire.

Water Connection:

Connect the high pressure hose by pulling the coupler
collar back and then inserting it onto the discharge nipple.
Secure it by pushing the collar forward.
Attach the wand into the trigger spray gun using teflon
tape on the pipe threads to avoid leaks.
Inspection and Testing Gas Piping:
The building structure should not be weakened by in-
stalling the gas piping. The piping should not be sup-
ported by other piping, but should be firmly supported
with gas hooks, straps, bands or hangers. Butt or lap
welded pipe should not be run through or in an air duct.
Before turning gas under pressure into piping, all open-
ings from which gas can escape should be closed. Im-
mediately after turning on gas, the system should be
checked for leaks. This can be done by watching the 1/2
cubic foot test dial and allowing 5 minutes to show any
movement, or by soaping each pipe connection and
watching for bubbles. If a leak is found, make the neces-
sary repairs and repeat the above test.
Defective pipes or fittings should be replaced and not
repaired. Never use a flame or fire in any form to locate
gas leaks, use a soap solution.
After the piping and meter have been checked completely,
purge the system of air. DO NOT bleed the air inside an
enclosed room.
The appliance and its individual shut-off valve must be
disconnected from the gas supply piping system during
the pressure testing of that system at test pressure in
excess of 1/2 psig or damage to the gas valve will occur.

Gas Pressure:

The ideal incoming gas pressure is 11" wc (water col-
umn) (minimum 6" wc, maximum 14" wc or 1/2 psig).
The correct operating manifold pressure for natural gas
is 3.5" wc. The operating manifold pressure for propane
gas is 11" wc. The gas valve pressure regulator can be
adjusted between 3" and 4" wc natural gas or 6" and 11"
wc for propane.
If the desired input rating cannot be obtained within the
above manifold pressure adjusting range, the next size
larger or smaller burner orifice should be used.
OPERATOR'S MANUAL
WARNING & CHECK LIST
WARNING
1. Installation or servicing of gas appliances and con-
trols must only be performed by qualified personnel.
After installation or servicing, test manual valve, op-
erating valves, pressure regulation, and automatic
shut-off valve for proper operation.
2. Install in a suitable dry location. The machine must
be located in an area properly protected from the
weather.
3. Shut off gas and electricity before starting installa-
tion or service. Turn gas back on to test or operate.
4. DO NOT connect pressure washer before pressure
testing gas piping. Damage to gas valve may result
(6" - 14" W.C.P. or 1/2 psig).
5. DO NOT insert any object other than suitable pipe
or tubing in the inlet or outlet of the gas valve. Inter-
nal damage may occur and result in a hazardous
condition.
6. DO NOT grip gas valve body with a pipe wrench or
vise. Damage may result causing gas leakage. Use
inlet or outlet bosses or a special body wrench.
7. DO NOT short the gas valve terminals.
8. DO NOT allow any flame to impinge on the regula-
tor vent tubing if supplied. It may clog and cause gas
valve malfunction.
9. DO NOT use the gas cock to adjust the gas flow.
10. In case main burner fails to shut off, turn off gas
supply.
11. Keep all combustible materials away from gas appli-
ances. DO NOT allow lint or dust to collect in burner
area.
12. Dials must only be operated by hand. Never use pli-
ers, wrenches or other tools to turn dials.
13. Leak test with a soap solution after installation or
service with the main burner on. Coat pipe and tub-
ing joints, gaskets, etc. Bubbles indicate leaks.
14. If the machine is installed in an enclosed room, care
should be taken to ensure that an adequate supply
of air is available for combustion and ventilation (1
sq. inch per 1000 BTU).
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