NARWHAL / DOLPHIN / MORAY / SHARK / GROUPER
7. MAINTENANCE
This submerged pump is an experimented quality product, undergoes severe final tests, and does not require
any maintenance. For a long interruption-free operational life, we advise you to use it with care and run
periodic checks.
•
Electrically unplug before every maintenance job.
•
If using the pump in the mobile way, always wash it inside and outside with clean water after use.
•
If the pump is installed in a permanent place, we advise you to check the operation of the float switch
every three months.
•
Use a water jet to remove the hairs and filament particles which may have been deposited in the
pump housing.
•
Every three months: remove mud from the well bottom and clean the well walls.
•
Use clean water to remove deposits from the floating switch.
Cleaning the blade wheel:
If there are too many deposits in the pump casing, dismantle the lower part of the pump as follows:
1. Detach the suction cage from the pump casing
2. Clean the blade wheel with clean water.
Important: do not rest the pump against the blade wheel and do not use it as a support!
3. Install in reverse order
8. TROUBLESHOOTING
Before you begin troubleshooting, cut electrical power to the pump by unplugging it.
Troubles
Pump not starting
Pump not circulating water
Pump not switching OFF
Flow rate insufficient
Pump switching OFF after a short
period of operation
Causes
- no current supplied
- float switch not operating
-the inlet filter is clogged
-the delivery pipe is bent
- The float switch cannot descend
-the inlet filter is clogged
-pump performance limited by a
high quantity of impurities
-the motor overload cutout
switches OFF the pump due to too
many impurities in the water
-the motor overload cutout starts
operating because water
temperature is too high
Remedies
-check power supply
-take the float switch to a higher
position
-clean the inlet filter with a water
jet
-Straighten the pipe
-Correct the position of the pump
on the well bottom
-clean the inlet filter
-clean the pump and replace parts
prone to wear
-Unplug and clean both pump and
well
-do not exceed maximum water
temperature of 35° C
ENGLISH
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