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PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13

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The connection apertures for filling the motors vary

according to the motor type and model. Table 6-5

shows the filling aids which are required for filling or

topping up motors.

Table 6-5

Motor type

Suction

shroud

Filling

valve

Screw plug

Filling

accessory

* Filling nipple

Thread size -

hose diameter

MX6

without

screw plug

funnel

with

* M10 - Ø15/19

pump

MX8

without

screw plug

funnel

with

* M10 - Ø15/19

pump

MI10

MIX10

without

screw plug

funnel

with

in.

* M10 - Ø15/19

pump

VNI12

¾ in.

* M16 - Ø15/19

pump

VNI14

MI16

MI19

VNI22

MI26

VNI30

6.5.4 Filling pump

The filling pump is only suitable for filling motors that

are equipped with a filling valve [B6514] in the bottom

bearing or thrust bearing housing.

A filling valve [B6514] can be fitted in place of a

screw plug [6780], however the valve cannot be

screwed out again after the motor has been filled; it

must remain fitted. Replacing the screw plug does

not affect the functioning of the motor.

6.5.5 Sealing cap

The sealing cap [0236] must only be fitted for

transportation and storage.

The sealing cap [0236) must always

be removed when the motor is put into service.

6.5.6 Filling liquid

If a motor has to be filled or topped up with a mixture

of water and antifreeze, this must be prepared in a

clean container before filling the motor.

6.5.7 Header tank (optional)

If a header tank is installed it is recommended that it

is fitted with a float switch for automatic monitoring of

the liquid. This ensures that the motor is always full.

The header tank must be not more than 5 m (16.4 ft),

corresponding to 0.5 bar (7.25 psi), above the lowest

level of the pumped liquid, or the motor, to ensure

sealing of the motor. If a greater height cannot be

avoided, the manufacturer must be consulted.

6.5.7.1 Pipes

When installing a header tank, pipes with a nominal

size of at least 13 mm (½ in.) must be used between

tank and motor for venting and filling the motor.

To ensure the motor is properly filled, the installation

of a drain valve in the return pipe below the tank

bottom is recommended. This valve must remain

open during filling and topping up until the liquid

escaping from it is free of bubbles.

The drain valve must never be fitted

so that it can shut off the return pipe.

6.5.8 Vent valves

Vent valves are available with different pressure

ratings. The appropriate valve is selected according

to the purpose for which the submersible motors are

to be used. So that filling with liquid does not have to

take place against the opening pressure of the vent

valve, it can be screwed out for the duration of filling if

the installation position allows this.

It is essential that the vent valve is

screwed in again after filling.

6.5.9 Accessory pack “Z”

For submersible motors installed horizontally, and in

some cases vertically, the vent valves and screw

plugs must be exchanged or replaced on site. The

parts required for this are supplied in accessory pack

“Z”, as shown in table 6-6, with the respective motor.

Relevant instructions are given in the filling details for

the particular motor type and for the specific

application.

Table 6-6: Accessory pack “Z”

Item no.

Description

Quantity

B6523

Vent valve

6780

Screw plug

4510

Sealing ring

6.6 Filling instructions

The procedures for filling and topping up submersible

motors described below depend on the method of

installation and the type of motor used. As a rule it is

not possible to use all installation methods for all

motor types, and for this reason the following table

shows which installation methods are used as

standard for the different motors. For special cases

not mentioned here, the manufacturer must be

consulted.

The relevant section for motor filling must be taken from

the data sheet belonging to the corresponding unit.

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 39 40

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