20
Maintenance
Gas Valve Regulator
Gas Valve Regulator Adjustment
Adjustment of the built-in regulator isn’t normally
necessary, since it is preset at the factory. However,
field adjustment may be accomplished as follows:
1. Attach manometer at pressure tap port.
2. Remove regulator adjustment screw cap.
3. With small screwdriver, rotate adjustment screw
clockwise to increase or counterclockwise to
decrease gas pressure.
4. Replace regulator adjustment screw cap.
Electrode Adjustment
Pilot Burner Adjustment
1. Remove Pilot Adjustment Cap.
2. Adjust pilot key to provide properly sized flame.
3. Replace Pilot Adjustment Cap.
Pressure Relief Valve
Each machine is equipped with a relief valve to relieve
pressure in the system when higher than normal
operating pressures are encountered. Unusually high
pressures come from an object plugging the spray
nozzle. This problem can easily be remedied by
removing the obstruction. If operating pressure of
machine is found to be normal and relief valve
continues to leak, repair or replace the valve.
CAUTION: Open this valve annually to prevent
blockage.
Propane Gas
(Optional Conversion Kit)
General Safety Precautions
Have a qualified gas service person assist in any gas
burner installation or service. Few maintenance people
or mechanics are knowledgeable in gas controls or
related safety practices. Propane gas is heavier than
air, unburned propane gas will gravitate to the floor
rather than rise out of the stack. Hence, adequate floor
space and good ventilation are especially important
with propane systems.
Gas Pressure Requirements
All propane fired machines operate on gas phase only.
They are designed to operate at a pressure of 11 water
column inches (between 1/3 and 1/2 of one PSI), and
are often operated at even higher pressures when extra
heat is needed.
Exterior regulators are needed to control the system.
Propane bottles are not included with machine. A high
pressure regulator should be installed on propane
bottle and a low pressure regulator attached to the
pressure washer.
ON/OFF
Switch
Line to Pilot
Light
Outlet
View
Manifold Pressure
Adjustment Screw
Under Cap
Inlet
View
Line to
Pilot
Light
Landa NG 3000 Operator’s Manual 8.913-942.0 - E
2 Lead
Thermopile
Connections
Pilot 2CH-2 or
Equivalent
To Burner
Flow Switch
Gas Valve
Ignitor
2 Lead Thermopile
(Equivalent to CP-2)
Содержание NG-3000
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