3. Maintenance and troubleshooting
MERLION PLUS - E500
STD04
Page 21 of 50
3.2 Troubleshooting
Symptom
Rectification
Main switch is turned on the High Pressure
Cleaner will not run.
•
Check power supply connection for faulty components .
•
Make sure the socket is inserted correctly
•
Check if fuse is blown, replace if necessary.
Motor is humming & Pump does not give
pressure or low pressure
•
Voltage is too low as compare to specification.(Check main voltage)
•
Motor phase is missing (For 3 phase application).
Check the connection box voltage with a meter
•
High-pressure pump is blocked
Pump pressure drops and the High Pressure
Cleaner works irregularly
•
Strain filter is clogged.
•
Water supply from the tap is insufficient.
•
Clean the strain water filter
Pump continuously stops and starts, when the
spray-gun trigger is activated.
•
The high pressure nozzle is partly clogged.
Turn off the High Pressure Cleaner, dismantle the high-pressure nozzle and remove
the extraneous matter. Replace if damaged
High pressure cleaner does not reach the proper
working pressure when the spray-gun handle is
activated
•
The high-pressure nozzle is clogged.
•
Dirt in the by-pass valve.
•
The pump sucks air.
•
Turn off the High Pressure Cleaner. Clean the nozzle.
•
Inspect the low pressure supply, while spray-gun trigger is activated, ON the machine
on again.
•
Repeat the procedure again; now with the trigger released. If the problem still
occurs, by-pass valve should be dismantled and the extraneous matter removed.
High Pressure Cleaner only works with
approximately 2/3 of the maximum pressure,
and the high-pressure hose is vibrating.
•
Valves are dirty
•
Remove the dirt and check to ensure the valve flaps are movable and fit tightly.
Noisiness
•
The pump sucks air.
•
One or more valve springs are broken or down.
•
Extraneous matter in the valves.
•
Crankcase or motor bearings worn out.
•
Inspect the low-pressure supply. Replace springs.
•
Clean the valves. Replace the bearings.
Water in the oil
•
The O-ring casing is worn out.
•
High moisture in the air (condensing inside the crankcase)
•
The seals are completely worn out.
•
Check or replace the O-ring.
•
Renewal of the crankcase oil more often.
•
Replace the seals.
The High Pressure Cleaner does not suck
chemicals
•
The chemical container is empty.
•
The High Pressure Cleaner has not been set to low-pressure (on the double barrel
lance cock).
•
The low-pressure nozzle is clogged, or partly clogged.
•
The non-return valve of the chemical injector is stuck.
•
Ensure the chemical container contains sufficient fluid for proper suction.
•
Set the spray-lance to low pressure by turning the cock on the lance
counterclockwise.
•
Clean or replace the low-pressure nozzle.
•
Clean, correct or replace the non-return valve of the chemical injector.
NOTE
For any further inconveniences, not mentioned in this user guide or any damages of
the machine, we strongly suggest you to make contact with your dealer for the repair
or possible replacement of any original spare-parts
