Landa MHC3-24324, Руководство оператора

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22
Maintenance
PROBLEM POSSIBLE CAUSE SOLUTION
DETERGENT
NOT
DRAWING
CONT.
Injector head may be blocked, dirty
or damaged.
Clean and make sure ball and spring behind detergent hose
barb or injector body are working properly.
Not using soap nozzle Insert soap nozzle into wand coupler.
Detergent level is low Add detergent if needed.
PUMP
RUNNING
NORMALLY BUT
PRESSURE
LOW ON
INSTALLATION
Pump is sucking air Check water supply and possibility of air seepage.
Valves are sticking Check and clean or replace if necessary.
Unloader valve seat is faulty Check and replace if necessary.
Nozzle sized incorrectly
Check and replace if necessary
(see serial plate for proper size).
Packing piston is worn Check and replace if necessary.
FLUCTUATING
PRESSURE
Valves are worn Check and replace if necessary.
Valve has a blockage Check and replace if necessary.
Pump is sucking air Check water supply and air seepage at joint in suction line.
Packing piston is worn Check and replace if necessary.
Gasoline Engine Altitude
The gasoline engine is preset for operation at altitudes
below 1000 feet above sea level. If operated at higher alti -
tudes, it may be necessary to install a high altitude main jet
in the carburetor. Contact your local authorized engines
sales and service center for details.
PUMP
NOISY
Air is in suction line Check water supply and connections on suction line.
Inlet or discharge valve springs are
weak or broken
Check and replace if necessary.
Excessive matter is in valves Check and replace if necessary.
Bearings are worn Check and replace if necessary.
WATER
DRIPPING FROM
UNDER PUMP
Piston packing is worn Check and replace if necessary.
O-Ring plunger retainer is worn Check and replace if necessary.
Piston is cracked Check and replace if necessary.
Pump protector is worn
Lower water supply pressure. Do not run the spray gun
closed longer than 5 minutes.
OIL
DRIPPING
Oil seal is worn Check and replace if necessary.
EXCESSIVE
VIBRATION
IN DELIVERY LINE
Valves are functioning irregularly Check and replace if necessary.
BURNER
MOTOR
WILL
NOT RUN
Fuel pump has seized Replace fuel pump.
Burner fan loose or misaligned Position correctly and tighten set screw.
Control switch is defective Replace switch.
There is a loose wire Check and replace or tighten wiring.
Burner motor is defective Replace motor.
RELIEF VALVE
LEAKS WATER
Relief valve is defective Replace or repair relief valve.
Landa MHC 9.800-950.0 - BM