Landustrie version 06-12 | operation & maintenance manual DWP & DNP-EX series
Subject to modifications
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Checkpoint first pump start:
Before installing and start operating the pump following checkpoints are involved:
Check on delivery
Remove the pump from the packing and check for transport damage, such as material
errors, cracks of bended cable.
Check for completeness of the delivery.
If the delivery is incomplete, or damaged, please contact your supplier immediately.
Check oil level
Verify the oil level in the seal housing (according to procedures on page 11)
Check Power supply.
Verify if voltage, frequency and starting method are according to the data as specified on
the pump data plate.
Connect the pump according to the wiring diagram of the electrical cabinet.
Information about the pump cable codes can be find on page 8 or 9.
Thermal protection:
Thermo-switches (klixons), the connection values for the standard thermal protection are max.
250V-1.6A.
In ‘cold’ condition the switch is closed.
Thermistors (PTC),
as an option thermistors can be supplied.
Resistance cold: 200-500 Ohm,
Resistance at switching temperature: 1650-4000 Ohm
Cable entry:
Especially when the pump has been stored for a long time, fasten the cable entry, if necessary, to
tighten the rubber gland of the cable entry, the t
orque should be; G7/8” = 80-100 Nm, M42 = 120-
150 Nm.
Motor protection:
Verify the presence of the motor protection circuit breaker.
At direct start (DOL) the motor circuit breaker should be set at the current value given on the data
plate of the pump.
At star delta start (YD) the setting of the motor circuit breaker should be 0.6 of the current value on
the data plate of the pump.
Special conditions for safe use
Thermo switches or PTC thermistors in combination with a protective device shall be installed in
the motor circuits in such a way that too high temperatures leads to switching-off of the motor. The
resetting of the supply shall be manually.
The level sensors must have a minimum safety integrity level SIL 1
The motors are provided with fasteners of at least property class A2-70
Contact the manufacturer for information on the dimensions of the flameproof joints
Onderhoud schema
