Landustrie version 06-12 | operation & maintenance manual DWP & DNP-EX series
Subject to modifications
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Approved electrode
Operation checks:
The correct direction of rotation is counter clockwise (ccw),
looking at the suction opening of the pump.
Check procedure: Place the pump into horizontal position,
start the pump short time, check visually the direction of
rotation.
Please follow all safety measures!.
The pump should operate with sufficient cooling conditions.
This means for at least
⅔ of the motor is submerged.
Without this requested cooling condition, the motor runtime is limited to maximum 15
minutes, to avoid overheating. The cooling down time is twice the running time.
Noise level:
In pump installations in sumps, with closed pump cover, the noise level will not exceed 70 dB(A).
In dry installed pumps according to installation version ODO, the noise level sometimes may
exceed 80 dB(A). Please use proper hearing protection!
Electrical pump connections:
The different connections for the cables are specified on page 8 and 9.
Check the cable type installed on the pump and verify the data onto the pump data plate.
The pump is equipped with extra leads for thermal protection. The thermal protection
ensures that
the pump under all conditions meet the needs of temperature class T4.
Standard thermo-switches (Klixons) with
125°C
switching temperature are supplied.
Contact rating: max. 250V-1.6A. The contacts are normally closed.
As an option thermistors (PTC) with
125°C
switching temperature can be supplied.
These are resistors, not circuit breakers!
Resistance cold: 200-500 Ohm, Resistance at switching temperature: 1650-4000 Ohm
Maximum voltage is 7.5 V.
Resetting may only be done manually!
The electrical connection of the permanently connected un terminated cable
shall be made in a certified enclosure in type flameproof enclosure “d” or
increased safety “e”.
Water in oil detection:
As a safeguard against water ingress into the motor, the pump can be equipped with a water
detector in the oil housing. The water detector detects water which might have entered the oil
housing due to seal failure or cable damage.
The water detector causes the pump to switch off, before damage to the motor is done.
Option one:
Option two:
Electrodes in the oil housing are connected to an intrinsic safe amplifier by means of a shielded
cable or the kabel is connected through the pump cable.
For ATEX
for example the
Vegator 132.AC.XXKBX and for
example the
IECEx Vegator
132.IC.XXKBX or equal. (See diagrams on page 8 and 9)
We do strongly recommend to connect the pump to the mains by authorized
personal only
.
Please ensure this is done accordingly and in compliance with local regulations
.
cable
cable entry
electrodes
