DAB JET Série Mode D'emploi page 31

FAULTS
THE SET DOES NOT PRIME.
THE SET DOES NOT START.
THE SET DOES NOT STOP.
DURING OPERATION OF THE SET
THE PUMPS START AND STOP
TOO FREQUENTLY.
THE SET DOES NOT SUPPLY THE
REQUIRED CHARACTERISTICS.
ENGLISH
POSSIBLE CAUSES
1. Suction pipe with insufficient diameter;
excessive us of couplings which cause
sudden variations in direction of the
suction pipe; siphon effect.
2. Suction pipe clogged.
3. Air infiltrations in the suction pipe of the
set.
4. Foot valve clogged or blocked.
5. Water recycling between the pumps in
the set.
6. Interception valves on suction of each
pump partly closed.
1. Main motive power switch and/or main
auxiliary circuit switch off (in position "0").
2. No voltage at the auxiliaries.
3. Automatic inverter SZ3 faulty (only for
sets with three pumps).
4. Electric power supply is not reaching the
pump remote control switches.
5. Electric circuit interrupted.
1. Important water leaks in the system.
2. Pressure switches or pressure
transmitter faulty or clogged.
1. Expansion vessels damaged.
2. Starting and stopping
calibrations too close.
1. The set chosen is undersized for the
characteristics of the system.
2. Excessive water consumption for the flow
rate of the well (set above head) or of the
first collection tank (set below head or
above head).
3. Motors turning in inverse direction.
4. One or more pumps clogged.
5. Pipes clogged.
6. Foot valve clogged or blocked (set above
head).
7. Water recycling between the pumps in
the set.
8. Interception valves at suction and
delivery of each pump partly closed.
9. Air infiltrations in the suction pipe of the
set.
1. Check that the suction pipe is correctly
made, as indicated in the paragraph on
"Installation".
2. Clean it or change it.
3. Testing under pressure, check the perfect
seal in the couplings, the joins and the pipes.
4. Clean it or change it.
5. Check correct operation of the non return
valves on suction of each pipe.
6. Open them completely.
1. Switch them on, turning them to position "1"
and check that the green light comes on
indicating that the panel is live.
2. Check the transformer and the fuses.
3. Connect together the input and output
connectors XC1 and XC2 of the inverting
device and immediately order a new
automatic inverter.
4. Check correct operation of the following
controls placed in series: remote control;
minimum pressure switch; minimum level
float.
5. Use a tester to find the point of interruption
and repair it.
1. Check the joins, couplings and pipes.
2. Clean them or change them.
1. Empty them and check the preloading (see
paragraph "Instructions for running the set").
Replace the diaphragm if it has a hole.
pressure 2. Change the settings (see paragraph
"Regulating the set").
1. Change it, consulting the Technical
Catalogue.
2. Increase the flow rate that can be supplied
by the well or by the first collection tank.
3. Change it, performing the operation
described in point 5.5. of the paragraph
"Starting up".
4. Dismantle them and clean the pump body
and the impellers, ensuring that they are in
good condition.
5. Clean them or change them.
6. Clean it or change it.
7. Check correct operation of the non return
valves at suction of each pump.
8. Open them completely.
9. Testing under pressure, check the perfect
seal in the couplings, the joins and the pipes.
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REMEDIES