Fitting The Cable Glands; Fitting The Air Vent; Fitting The Venting Pipe; Connecting The Inlet Pipes - Grundfos DUOLIFT Series Installation And Operating Instructions Manual

3.8.2 Drilling holes for cable glands
1. Determine where to lead the pressure hose from
the level sensor tube and cable from the alarm
float switch, if any.
2. Drill holes.
Pressure hose:
Alarm float switch cable:
3. Deburr the holes.

3.9 Fitting the cable glands

Choose the appropriate cable gland for the
application:
Cable gland for Unilift cable:
Cable gland for level sensor hose:
Cable gland for SEG cable:
Cable gland for alarm switch:
Fig. 4 Fixing the cable glands

3.10 Fitting the air vent

1. Fit the seal on the sleeve.
2. Fit the sleeve in the hole for the air vent. The air
vent is located on top of the tank.
3. Fit the nut from inside the tank and tighten it.
Fig. 5 Fitting the air vent

3.11 Fitting the venting pipe

The venting pipe is not delivered with the
Note
product
You can connect your venting pipes to the air vent in
three different ways.
Ø20
Ø25
• By means of a PVC venting pipe with an outer
diameter of 63 mm and the glue delivered with
the product.
• By means of a flexible pipe connection with an
inner diameter of 75 mm and with clamps.
A flexible pipe connection with clamps is
available as an accessory.
M20
• By means of a PP double socket with an inner
M20
diameter of 75 mm. The socket must comply with
M25
EN 1451.
M20

3.12 Connecting the inlet pipes

You can connect up to three or four inlet pipes to the
tank, depending on the size of the tank. First you
must cut the holes open. See section 3.8 Drilling
holes in the tank.
1. Fit the socket seal in the inlet.
2. Connect the isolating valve to the inlet pipe.
The isolating valve is an accessory and is not
part of the tank delivery.
3. Insert the inlet pipe into the socket seal.
Fig. 6
The isolating gate valve can be ordered as
accessory. Use product number 96615831.
Fitting an inlet pipe with an isolating
valve (type gate)
9