Operating instructions

CAUTION!
Pump can be damaged
The pump can be damaged if the motor drives the pump in
the wrong direction.
– When connecting the motor, pay attention to the correct
direction of rotation indicated by the arrow on the fan
cover, as shown in Fig. 21.
1. Install a motor protection switch, as the motors have no fuse.
2. Install an emergency cut-off switch or include the motor in the emer‐
gency cut-off management of the system.
3. Use a suitable cable between the motor terminal box and power
supply.
–
Key motor data can be found on the unit nameplate.
– Motor data sheets can be requested for more informa‐
tion.
– The terminal wiring diagram is located in the terminal
box.
– Notes on the speed controlled motor with external fan
and temperature monitoring can be found in the "Gen‐
eral operating instructions for ProMinent
®
motor-driven
metering pumps and hydraulic accessories"!
WARNING!
Risk of electric shock
In event of a defect, there is a risk of electric shock when
conductive feed chemical are used.
– For safety reasons we recommend connecting to a pro‐
tective low voltage, e.g. in accordance with EN 60335-1
(SELV ).
CAUTION!
Danger resulting from unnoticed diaphragm rupture
If the pump has been ordered with an electric diaphragm rup‐
ture sensor, it must also be electrically installed.
– Install the enclosed diaphragm rupture sensor electri‐
cally to a suitable monitoring device.
a) Diaphragm rupture sensor with switch contact
–
The cable can be poled as required.
b) Namur sensor, inherently safe
The monitor / power supply installed by the customer must be able to eval‐
uate the current variations of the Namur sensor for indicating a diaphragm
rupture!
Motor
P_SI_0012_SW
Fig. 21: Direction of rotation of motor
Diaphragm rupture sensor (Option)
Installation
25