Electrical Connection - Grundfos DDE series Montage- Und Betriebsanleitung

Hose connection procedure
1. Push union nut and tensioning ring across hose.
2. Push cone part fully into the hose, see fig. 6.
3. Attach cone part with hose to the corresponding
pump valve.
4. Tighten union nut manually.
– Do not use tools!
5. Tighten up union nuts after 2-5 operating hours,
if using PTFE gaskets!
6. Attach deaeration hose to the corresponding
connection (see fig. 2) and run into a container or
a collecting tray.
Tensioning ring
Union nut
Hose
Fig. 6 Hydraulic connection
Pressure differential between suction and
discharge side must be at least 1 bar/14.5
Note
psi!
Tighten the dosing head screws with a
torque wrench once before commissioning
Caution
and again after 2-5 operating hours at 4
Nm.
Installation example
The pump offers various installation options. In the
picture below, the pump is installed in conjunction
with a suction line, level switch and multifunction
valve on a Grundfos tank.
Deaeration
hose
Fig. 7 Installation example
14
Cone part
Multifunction
valve
Tank
Suction line with
empty signal

4.3 Electrical connection

Mains connection
Warning
The enclosure class (IP65/Nema 4X) is
only guaranteed if plugs or protective caps
are correctly installed!
Warning
The pump can start automatically when the
mains voltage is switched on!
Do not manipulate mains plug or cable!
The mains plug is the separator separating
the pump from the mains.
Note
The rated voltage of the pump, see section
2.4 Nameplate, must conform to local
conditions.
The pump is supplied with assembled mains cable
and plug.
1. Set capacity adjustment knob to 0 %
(see 6.1 Operating elements).
2. Connect the mains plug with the mains socket.