Flowserve PLEUGER User Manual download pdf (Page 21)

PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13

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Any power supply cables must be sized for this higher

voltage, depending on the static frequency converter.

Follow the instructions of the manufacturer of

the frequency converter regarding the maximum

length of the power cables.

The signal cables for temperature sensors should be

installed at a distance as far as possible from the high

voltage power cables.

5.8 Resistance sensor PT100 (RTD)

Figure 5-13: Standard connection diagram for one

PT100 (RTD)

Figure 5-14: Standard connection diagram for two

PT100 (RTD)

5.8.1 Adjustment of motor temperature

protection relay

The adjustment of the motor temperature protection

relays depends on the rated output and the flow

conditions along the motor surface. The permissible

temperatures are shown on the enclosed data sheet

as far as the motor is equipped with Pt100 resistance

sensors. Examples of values are:

At 60 °C (140 °F) high temperature: early warning

At 65 °C (149 °F) high temperature: motor shut down

6 MOTOR FILLING

The motor must be filled with clean, oil-free and

grease-free drinking water, to which antifreeze can be

added if there is a risk of freezing.

Never use distilled water.

All motors delivered ready-filled by the manufacturer

have antifreeze added which gives protection down to

-15 °C (5 °F) unless specifically ordered (certain

regions only) filled only with drinking water. For

specifically ordered units filled only with drinking

water the client is responsible for ensuring that

storage and use do not permit freezing.

This standard concentration is always the same

unless the customer or operator expressly states a

different preference.

For units supplied with a header tank, the fitting of an

audible or visual alarm is recommended to monitor the

filling level of the motor in case of leakage. This can be,

for example, a float switch installed in the overhead tank.

6.1 Antifreeze

Only MF-type motor filling should be

used as antifreeze.

6.1.1 Motor filling - MF-type

MF-type motor filling is a liquid consisting of “FSM1”

antifreeze and water. “FSM1” antifreeze is

manufactured based on propylene-glycol. The mixing

ratios must be prepared according to table 6-1.

Table 6-1

Motor filling

type

“FSM1”

% volume

Water

% volume

Protection

down to:

MF 15 *

- 15 °C (5 °F)

MF 20

- 20 °C (-4 °F)

MF 25

- 25 °C (-13 °F)

MF 30

- 30 °C (-22 °F)

* Standard filling

6.1.2 As-delivered state

These instructions apply to the motor types listed in

table 6-2. They are also applicable to Polder pumps,

prefixed with a “P”. As a general rule, all motors are

delivered as shown in table 6-2.

Table 6-2

Filled

Unfilled

M 6

MX6

M 8

MX8

MI 10

MIX10

VNI 12

VNI 14

MI 16

MI 19

VNI 22

MI 26

VNI 30

Every motor carries a label indicating its state of filling

on delivery.

Yellow label = filled

Green label = unfilled

In all cases the state of filling stated on the label must

be observed.

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