Electrical installation
22
© Lutz-Jesco GmbH 2020
BA-10491-02-V01
Piston diaphragm dosing pump
MEMDOS KMS LB/LA
Operating instructions
9 Electrical installation
DANGER!
Mortal danger from electric shock!
If there is an electrical accident, you must disconnect the dosing
pump from the mains as quickly as possible.
ð
Install an emergency stop switch or integrate the dosing pump
into the plant safety concept.
CAUTION!
Danger of automatic start up!
The dosing pump does not have an ON/OFF switch and may start to
pump as soon as it is connected to the mains supply. This means that
dosing medium can escape. Depending on the type and hazardous-
ness of the dosing medium, this can result in damage to property or
to injury.
ð
Install an emergency stop switch or integrate the dosing pump
into the plant safety concept.
PLEASE NOTE
Damage due to incorrect mains voltage
The dosing pump can be damaged if you connect it to the wrong
mains voltage.
ð
Observe the information on the mains supply that is given on the
rating plate.
Safety instructions for installation in a potentially explosive atmosphere:
DANGER!
Danger to life through explosions!
Explosions may result which could result in fatal injuries.
ð
Earth the dosing pump, drive motor and all metal parts along the
suction and pressure piping route.
9.1 Drive motor connection
n
The electrical connection comply with local regulations.
n
Cable type and cross-section of the supply lines must be chosen ac-
cording to the motor data.
n
We recommend to use cable screw connections with strain-relief
clamps.
n
The required protection degree must be ensured by installing the con-
nections professionally.
n
The motor must be protected by a suitable motor protection switch.
n
The dosing pump must be earthed via a PE conductor for the connec-
tion to the termination box.
n
If an ATEX certified motor is being used, you must also observe the en-
closed motor operating instructions.
n
The motor must be connected to the termination box in accordance
with the circuit diagram.
9.1.1 Three-phase motors
Connection
Phases
MEMDOS
KMS LB/LA
Star connection
W2
U2
V2
U1
V1
W1
L1
L2
L3
PE
3 ~
14–700
Delta connection
W2
U2
V2
U1
V1
W1
L1
L2
L3
PE
3 ~
14 – 700
Tab. 17: Three-phase motors circuit diagrams
9.1.2 Rotational direction of the motor
10490000_2
Bild BA MEMDOS KMS LB 14
9.1.2 Drehrichtung des Motors
Fig. 8: Top view rotational direction of the motor
Comply with the rotation direction! The arrow indicates the rotational di-
rection of the motor which should be set-up.
