6
3.5. Connecting To The Mains Power Supply
Power connections must comply with local
regulations. Voltage and frequency information
given on the rating plate must correspond to
the mains voltage and frequency values.
When the electrical connections have been
completed, carry out the earthed conductor test. The pump
must be disconnected from the power before opening the ter-
minal box.
When switching on for the first time, check the direction of
rotation:
Checking The Direction Of Rotation
Check the direction of rotation of the pump
before filling up with operating medium.
➡
Remove blank flange on the exhaust side.
➡
Switch on pump for a short time (max. 5 seconds).
Motor/motor fan must turn clockwise (see arrow on motor
fan cover).
➡
If direction of rotation is incorrect: Interchange two
phases on the connecting cable.
CAUTION
CAUTION
Switching parts list
S3 Control
switch
S1 Pushbutton
"OFF"
S2 Pushbutton
"ON"
K1 Contactor
F1-3 Motor fuse
F5 Control
fuse
F8 Triggering Unit TMA 4 or TMA 4R
H41 Signal lamp in Triggering Unit F8
H42 Signal lamp
M1 Motor
B1 Temperature
sensor
R Reset button in Triggering Unit F8 (only for type TMA 4R)
Contactor control (short contact making with Triggering Unit Type TMA
4R).Manual reset (R) at triggering unit after thermal tripping. Thermal
tripping displayed by H42 and H41.
Three phase PTC motors
The pumps are three phase current motor driven and are
equipped with three PTC resistors built into the stator
windings. The connection of a tripping unit will protect the
pump against overloading (see connecting example).
Power section with motor to be protected
Tripping unit:
PTC tripping unit with two switchover contacts at the output
manufactured by Ziehl, type MSR 220 F (see Section 9,
„Accessories“), AEG type TMA 4R or Siemens type 3 UN8 004.