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7. MAINTENANCE
Before any operation,
switch off the pump(s).
No special maintenance in operation. Keep the pump and the
motor-converter perfectly clean.
In case of prolonged stopping, if there is no risk of frost, it is best not
to drain the pump.
The bearing holding the coupling and the motor bearings are lubri-
cated for their total lifetime and do not require any lubrication.
It is recommended to grease the shaft end as well as the coupling
boring with a high adhering grease (type type D321R Molikote or
8191 Loctite for example) to facilitate any further diassembling. The
mechanical seal does not require any maintenance in operation. It
must never operate dry.
8 . DEFAULTS–CAUSES-REMEDIES
CAUTION !
Before any operation, SWITCH OFF the pump(s).
ALL INCIDENTS HEREAFTER MENTIONED GIVE RISE TO THE RESTING OF THE FAILURE DETECTION RELAY.
SIGNALISATION
Reaction
GREEN
RED
time
LED
LED
before variator
stop
OFF
ON
Immediate
OFF
ON
Immediate
OFF
ON
Immediate
OFF
ON
<10s
OFF
ON
<60s
If the pump is completely stopped and an intervention on this one is necessary, cut the supply ; await 2 minutes the discharge of the capacitors ;
correct the failure, switch on the supply again. If the defect is major, the action of an after-sales technician is required.
All manuals and user guides at all-guides.com
BEHAVIOUR OF THE VARIATOR
Waiting
State of the
time before
relay
restart
Contact
Open
No restart
Open
No restart
Open
No restart
Open
No restart
Open
No restart
Replacement frequencies
Remark : these are only indications, the replacement frequency
depends on the operating conditions of the unit , i.e. :
- Temperature, pressure and type of the conveyed fluid for the
mechanical seal.
- Load and ambient temperature for the motor and the other components.
- Starting frequency : continuous or intermittent running.
Parts or components
Mechanical
subject to wear
Indicative operating
10 000 to
lifetime
20 000 h
Replacement continuous
1 to 2 years
frequency
15h/day
2 to 4 years
9 months/year
INCIDENTS / POSSIBLES CAUSES
a) The variator supply is
in under-voltage.
b) The variator supply is
in over-voltage
c) The motor is in short-circuit.
d) Load of the pump is excessive.
e) The cable of the sensor
(4-20mA) is cut. (Only in Mode2)
21
bearings
Converter
seal
≈ 15 000 h
12 000 h
to 50 000 h
amb. max.+ 40°C amb. max.+ 40°C
1,5 à 5 years
1 to 3 years
3 to 10 years
3 to 10 years
REPAIRING
- Check voltage at the variator terminals.
- Check voltage at the variator terminals.
- Dismantle the motor-variator of the pump,
check it or replace it.
- Density and/or viscosity of the conveyed fluid
are too big.
- Check the correct supply and the cable
connection of the sensor.
Motor
winding
25 000 h
3 years
6 years
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