Flowserve PLEUGER - Manual (Page 21)

PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13
Page 21 of 40 flowserve.com
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 * 35 65 - 15 °C (5 °F)
MF 20 40 60 - 20 °C (-4 °F)
MF 25 45 55 - 25 °C (-13 °F)
MF 30 50 50 - 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.