Wilo Drain TMT 32M - Mains Fuses and Insulation Checks; Motor Wiring and Protection; Commissioning; Electrical System Setup

Installation and operating instructions Wilo-Drain TMT 32M 33
COMMISSIONING English
Motor compartment monitor
• The motor compartment monitor must be con-
nected via an evaluation relay. We recommend
the“NIV101/A”relayforthis.Thethresholdis
30kΩ.Whenthethresholdisreached,theunit
must switch off.
5.6. Motor protection and activation types
5.6.1. Motor protection
The minimum requirement for motors with a free
cable end is a thermal relay/motor protection
switchwithtemperaturecompensation,differ-
ential triggering and an anti-reactivation device
inaccordancewithVDE0660ortheappropriate
national regulations.
If the pump is connected to electrical systems
inwhichfaultsfrequentlyoccur,werecommend
installing additional protective devices provided
bythecustomer(overvoltage,undervoltageor
phasefailurerelays,lightningprotectionetc.).
We also recommend installing a residual-current
device(RCD).
Localandnationalregulationsmustbeobserved
when connecting the pump.
5.6.2. Activation types
Direct activation
Atfullload,themotorprotectionshouldbeset
to the rated current shown on the rating plate.
Atpartialload,werecommendthatthemotor
protectionbeset5%abovethecurrentmeasured
at the duty point.
Soft start activation
• Atfullload,themotorprotectionshouldbesetto
theratedcurrentatthedutypoint.Atpartialload,
we recommend that the motor protection be set
5%abovethecurrentmeasuredatthedutypoint.
• The current consumption must be below the rat-
ed current throughout the entire operation.
• Duetotheupstreammotorprotection,startingor
stopping should be completed within 30 seconds.
• Toavoidpowerdissipationduringoperation,
bypasstheelectronicstarter(softstart)once
normal operation is reached.
5.6.3. Operation with frequency converters
Operationonafrequencyconverterisnot pos-
sible.
6. Commissioning
The“Commissioning”sectioncontainsalltheim-
portant instructions for the operating personnel
for starting up and operating the pump.
The following conditions must be adhered to and
monitored:
• Type of installation
• Operatingmode
• Minimum water submersion/max. immersion
depth
These general conditions must also be checked
after a lengthy period without operation, and
any defects detected must be repaired!
Always keep this manual either by the pump
orinaplacespeciallyreservedforit,whereitis
accessible for the entire operating personnel at
all times.
In order to prevent damage or serious injury when
commissioningthepump,thefollowingpoints
mustbeobserved:
• Commissioningofthepumpmayonlybecarried
outbyqualiedandtrainedpersonnelinaccord-
ance with the safety instructions.
• All persons working on or with the pump must
havereceived,readandunderstoodthisoperating
and maintenance manual.
• All safety devices and emergency cut-outs must
be connected and checked to ensure that they
work properly.
• Electrical engineering and mechanical adjust-
mentsmustbemadebyqualiedpersonnel.
• Thepumpissuitableforuseunderthespecied
operating conditions.
• The work area of the pump is not a recreational
area and is to be kept free of people! No persons
are allowed in the work area during start-up or
operation.
• Whenworkinginsumps,asecondpersonmustbe
present for safety reasons. Adequate ventilation
must be ensured if there is danger of poisonous
gases forming.
6.1. Electrical system
Connectthepumpandinstallthepowersupply
cablesasdescribedinthe“Installation”section
and in accordance with the VDE guidelines and
applicable national regulations.
The pump must be properly protected and
grounded.
Observethedirectionofrotation.Ifthedirection
ofrotationisincorrect,thepumpwillnotperform
asspeciedandmaybedamaged.
Make sure all monitoring devices are connected
and have been tested.
ELECTRICAL hazard!
Electrical current can cause fatal injuries if not
handled correctly! All pumps with free cable
ends (i.e. without plugs) must be connected
by a qualied electrician.
6.2. Rotation control
The pump is checked and adjusted in the factory
to ensure that the direction of rotation is correct.
The connection must be made according to the
wiring labels.
A test run must be performed under general op-
erating conditions!
6.2.1. Checking the direction of rotation
The direction of rotation must be checked with a
rotatingeldtesterbyalocalelectrician.Forthe