3. Maintenance and troubleshooting
MERMAID E500-S
STD08
Page 23 of 52
Troubleshooting
Symptom
Causes and rectifications
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 cleaner does not reach the
proper working pressure (low) when the
spray-gun handle is activated
•
Nozzle has worn. Replaced nozzle.
•
Pressure packing’s worn. Replaced.
•
Worn or dirt in the by-pass valve. Required
serviced.
High Pressure Cleaner only works with
approximately 2/3 of the maximum
pressure, and the high-pressure hose is
vibrating.
•
Inlet water filters is clogged. Service or replaced.
•
Water supply is in-sufficient to accommodate pump
•
Low inlet booster pressure. Check booster pump
•
Valves are dirty or worn. Required service.
•
Remove the dirt and check to ensure the valve flaps
are movable and fit tightly.
High pressure pump exceeds its rated
pressure, and safety discs burst, or safety
valve dumps water
•
Nozzle has clogged. Removed nozzle and clean out
debris or replaced.
•
Check machine is operating at the correct
frequency.
Noisiness in pump crankcase
•
Crankcase or motor bearings worn out. Replace
the bearings.
•
Check oil level. Re-fill or changed oil in crankcase
Water in the pump crankcase
•
Worn oil seals. Replaced.
•
High moisture in the air (condensing inside the
crankcase). Renewal of crankcase oil more often.
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
