Connection of DN 20 pipe lines
•
Depending on the pipe material and connection, glue the pipe
(PVC), weld it (PP, PVDF or stainless steel) or press it in
(stainless steel).
•
Fit the gasket.
•
Screw the pipe on the valve using the union nut.
TM036457
Connection of DN 20 pipe lines
Connection of DN 32 pipe lines
•
Depending on the pipe material, fit the pipe to the welding neck
flange and weld it (stainless steel) or insert it into the headed
bush and weld it (PP, PVDF).
TM036458
Connection of DN 32 pipe lines
6.8.1 Connecting a liquid-heated dosing head (optional)
As an option, liquid-heated dosing heads are available in stainless
steel.
Ø
10
40
2f1
2f
TM036459
Liquid-heated dosing head
Pos.
Components
2f
Dosing head, liquid-heated
2f1
Hose nipple, DN 10 connection
Required characteristics of heating liquid:
•
The heating liquid must not chemically attack stainless steel.
•
Maximum permissible pressure: p
max.
= 3 bar.
•
Maximum permissible temperature: t
max.
= 100 °C.
7. Electrical connections
Make sure that the pump is suitable for the electricity supply on
which it will be used.
Warning
Electrical connections must only be carried out by quali-
fied personnel!
Disconnect the power supply before connecting the power
supply cable and the relay contacts!
Observe the local safety regulations!
The pump housing must only be opened by personnel au-
thorised by Grundfos!
Protect the cable connections and plugs against corrosion
and humidity.
Only remove the protective caps from the sockets that are
being used.
7.1 Electric servomotor (optional)
To connect the servomotor to the power supply, see the installation
and operating instructions for the servomotor.
7.2 Electronic preselection counter (optional)
To connect the preselection counter to the power supply, see the
installation and operating instructions for the counter.
7.3 Electrically heated dosing head (optional)
2e
TM036460
Electrically heated dosing head
Pos.
Component
2e
Dosing head, electrically heated
•
To connect the temperature controller to the power supply, see
the installation and operating instructions for the electric
temperature controller.
2e1
2e2
2e3
TM036461
Temperature controller
Pos.
Connections
2e1
Sensor
2e2
Heating
2e3
Power supply
28
English (GB)
Summary of Contents for DMH 25X
Page 2: ......
