Maintenance Instructions; Troubleshooting Table - Marina CAM 40/22 Mode D'emploi

4. Maintenance Instructions

The pressure tank unit is entirely maintenance-free.
If the pump gets blocked it will first have to be rinsed out.
Connect the pump after removing delivery pipe to the
water pipe and let water flow into the suction pipe.
While water is flowing into the pump, engage it several
times for about 2 seconds.
In this way it is possible to eliminate most blockages.
• If there is a risk of frost, the pump has to be emptied
completely.
• When the pump is not going to be used for a long time,
for instance in the winter period, it is recommended to
rinse out the pump thoroughly with water, empty it
completely and store it in a dry place.
• Check whether the pump works freely by briefly
connecting and disconnecting it.
• Then fill the pump again with the delivery liquid and set
it up for use.
Adjusting connection and cut-off pressure.
The pressure tanks unit are factory set with an operating
pressure of 1,4÷2,8 or 1,6÷3,2 bar (see table of
specifications). The connection and cut-off pressure can
be adjusted and may be set the desired pressure onto

5. Troubleshooting Table

Trouble
Motor will not start
Pump will not suck
Pump connects with very low
water intake
Insufficient rate of flow
The thermal cut-out switch cuts
off the pump
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.
according to your need by means of the switch (see
figure).
CAUTION!
In order to work, the pump must always be filled
with the delivery liquid until it overflows!
Caution: The pump must never run dry. The
manufacturer's warranty is null and void in the
event of damage to the pump caused by its running
dry.
Check that the pump is airtight; piping that is not
airtight draws in air preventing the pump from
working properly.
Cause
• No mains voltage.
• Pump impeller jammed.
Thermostat detached.
• Suction valve not in water.
• Pump chamber with no water.
• Air in suction pipe.
• Suction valve not airtight.
• Suction rose (suction valve) clogged.
• Max. suction height exceeded.
• Pressure of air cushion in the delivery
tank too low.
• Suction height too high.
• Dirty suction rose.
• Water level falls quickly.
• Pump flow rate reduced by foreign
bodies.
• Motor overloaded.
Friction too great due to foreign bodies.
15
1 = Connection pressure
2 = Cut-off pressure
Take the protective cover off the pressure
switch. With a screwdriver, turn onto - or +
according to need. Check the pressure with
the pressure gauge.
Remedy
• Check voltage.
• Dismantle the pump and clean it.
• Put the suction valve into water
(min. 30 cm.)
• Pour water into the suction union.
• Check the seal of the suct. pipe.
• Clean the suction valve.
• Clean the suction rose.
• Check the suction height.
• Increase the pressure of the air cushion
in the filling valve (1.5 bar)
• Check suction height.
• Clean the suction rose.
• Set the suct. valve lower down.
• Clean the pump and replace the worn
parts.
• Eliminate the foreign bodies.
Wait for the thermal cut-out switch to
trigger again (approx. 20 mins.).