12
Pump Typ Z
Version: 27215 -G.1
Schmalenberger GmbH + Co. KG
D-72072 Tübingen / Germany
Star connection
Y
(high voltage)
Fig. 2
Connection for 3-phase motors,
connection Y
Motor with PTC thermistors as thermal
winding protection
Connect the PTC thermistor (PTC sensor)
to the downstream trigger unit if required.
The PTC thermistors are designed
according to DIN 44081 and DIN 44082.
Time relay setting
For three-phase motors with star-delta
connection it must be ensured that the
switching points between star and delta
follow each other very rapidly. Long
switching times can result in damage to the
pump. Setting of the time relay for star-
delta connection: < 3 sec.
Direction of rotation check
The direction of rotation of the motor must
agree with the direction of the rotation
arrow on the motor housing of the pump
(seen from the motor, in a clockwise
direction). Check by rapidly switching on
and off.
If the direction of rotation is wrong, change
any two phases L1, L2 or L3 of the power
supply in the motor terminal box over.
Additional motor equipment
If particular control devices are to be used
e.g. in connection with the installation of the
pump in a process engineering facility, the
instructions of the manufacturer of the
control devices must be strictly observed.
4
Operating the Pump
4.1
Initial Start-up
4.1.1
Starting the pump
Make sure that the shut-off device on the
pressure end is half open before starting
the pump up! Once the maximum rotation
speed has been reached, slowly open it up
and adjust to full operational level.
W2
U2
U1
V1
W1
L2
L1
L3
V2
Warning!
Prior to initially starting up the
pump please make sure that
the following prerequisites
have been met:
1. The pump has been
connected properly
electrically and with all
requisite safety features.
2. The pump is filled with
delivery medium or there is
a minimum level of fluid in
the tank / pool (pump is
covered).
3.
Please observe:
Running
dry creates increased wear
and must be avoided at all
costs!
4. The rotating parts of the
pump have been covered
by a protective shield. (In
accordance with UVV
(Accident Prevention
Regulations) the centrifugal
pump may only be operated
if a safety shield has been
fitted).
5. The pump shaft turns
easily.
6. The direction of rotation has
been checked.
7. The minimum distance
between the suction inlet
and tank wall is 150 mm.