Pipe Connection; Minimum Space; Location - Grundfos Unilift AP12 Installation And Operating Instructions Manual

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Installation and operating instructions manual (216 pages)

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DANGER

Electric shock

Death or serious personal injury

- Route the power cable in a way

that supports it and protects it from

being cut, pinched or damaged.

- If the power cable is cut, pinched,

or damaged, replace it before

using the product.

DANGER

Electric shock

Death or serious personal injury

- Do not remove the power cable

and strain relief.

- Do not connect electrical conduit to

the pump.

Use an approved level controller with

a current rating that matches the

service factor marked on the

product's nameplate.

4.1 Pipe connection

Threaded steel or rigid plastic pipes can be screwed

directly into the 1.5" NPT outlet port. For permanent

installation, we recommend that you fit a union, a

non-return valve and an isolating valve in the outlet

pipe.

Other recommendations:

•

For portable or temporary installations, a plastic

outlet pipe can be used in conjunction with a

suitable, screwed connection or a hose coupling.

•

Threads must be sealed using Teflon

Do not install the pump hanging from

the outlet pipe or hose.

Do not lift the pump by its power

cable. Lower and lift it by means of a

wire or chain fastened to the pump

handle.

4.2 Minimum space

When the pump is installed in a permanent

installation with a float switch, and the cable length is

set to the minimum length of at least 4 in. (100 mm),

the minimum dimensions of the sump pit, basin or

tank must be as shown in fig. 2.

In addition, the sump pit, basin or tank must be sized

according to the relation between the water flow to

the sump pit, basin or tank and the pump

performance.

‹

Fig. 2

4.3 Location

The pump can be used in vertical as well as

horizontal position with the outlet port as the highest

point of the pump. See fig. 3.

During operation, the inlet strainer must always be

completely covered by the pumped liquid.

Fig. 3

tape.

When the pipe or hose has been connected, place

the pump in its operating position.

Position the pump so that the inlet strainer will not be

blocked by sludge, mud or similar materials.

In a permanent installation, the installation site must

be cleared of sludge, pebbles, etc. before the pump

is installed.

We recommend that you place the pump on a solid

base. See fig. 4.

•

Fig. 4

‹

21.5 in. (550 mm)

550 mm

Minimum installation dimensions

Pump positions

•

Pump placed on a plate

‹

•

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Unilift ap50 Unilift ap35

Pipe Connection; Minimum Space; Location - Grundfos Unilift AP12 Installation And Operating Instructions Manual

4.1 Pipe connection

4.2 Minimum space

4.3 Location

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