Maintenance Instructions; Troubleshooting Table - Makita Dolmar EP-400 Instruction Manual

the well so that the muddy bottom is not sucked up with
the water.
Never handle or hang the pump by gripping the power
supply cable.
In pumps with a floating switch, the latter is adjusted in
order to make immediate starting possibile.
Note
The pump well must have minimum dimensions of
40x40x50 cm. so that the floating switch can move freely.
It is also possible to use round, prefabricated concrete
wells with an inner diameter of approx. 40 cm.

4. Maintenance instructions

Your canned motor pump is a quality product, free from
maintenance. It has been subjected to rigorous final
checks.
However, for a long service life and continuous operation,
we recommend constant care and regular checks.
• Before every maintenance job, disconnect the plug.
• For transportable use the pump should be washed with
clear water after every use.
• For fixed installation it is recommended to check the
operation of the floating switch every 3 months.
• Using a jet of water, get rid of the fibre and spindly

Troubleshooting Table

TROUBLE
CAUSES
No mains voltage, the floating swittch will not connect
Defective protection device
Motor protection disconnected, pump straining/blocked
Dry operation protection disconnected, the water level has fallen too much
Defective pump
Clogged suction opening
Check valve blocked or delivery pipe bent
Delivery pipe clogged
Foreign bodies in the pump, pump impeller blocked
The pump runs dry
If it is not possibile to eliminate the trouble, please call our service department.
To avoid damage during transport, please ship in the ORIGINAL PACKING.
Repeated switching off with disconnection of the protection switch
particles that may get deposited in the pump's cassing.
• In the event of excessive deposits in the pump cassing,
dismantle the inlet filter by unscrewing the star screw.
Wash the pump casing and fit the inlet filter back on.
• Every 3 months remove the mud from the bottom and
walls of the well.
• Eliminate the deposits from the floating switch, washing
it with fresh water.
• Protect the pump from frost.
CAUTION!
"DRAINAGE"
Special instructions: It is not suitable for pumping:
sewage, sandy water.
The pump must never run dry.
The manufacturer's warranty is null and void in
the event of damage to the pump caused by it
running dry.
"VORTEX"
The pump must never run dry.
The manufacturer's warranty is null and void in
the event of damage to the pump caused by it
running dry.
The motor works, the pump will not convey
Insufficient flow rate
7
9
7
19
The motor will not work