Flowserve PLEUGER - Manual (Page 22)

PLEUGER STANDARD USER INSTRUCTIONS ENGLISH 71569293 01-13
Page 22 of 40 flowserve.com
6.1.3 Topping up of pre-filled motors
Topping up of pre-filled motors can be done with
potable water without antifreeze if the quantity of
topping up liquid is relatively small (1-2 %).
6.2 Type of use
The filling of motors depends not only on the motor
size and type, but also on the type of use. The
standard uses are described below.
6.2.1 Vertical installation

Normal design

Normal design in cooling/suction shroud

Normal design in closed shroud

Polder pump

Cavern pump
6.2.2 Horizontal installation

Normal design

Normal design in closed shroud

Pumping station

Heeling pump
6.3 Filling quantities
The filling quantities stated in table 6-3 are
approximate and may vary slightly due to differing
lamination lengths.
Table 6-3
Motor type
Filling quantity
litres US gal
M 6 MX6 4 to 4.5 1 to 1.2
M 8 MX8 8.5 to 9 2.2 to 2.4
MI 10 MIX10 15 4
VNI 12 35 to 40 9 to 11
VNI 14 53 to 60 14 to 16
MI 16 75 20
MI 19 150 40
VNI 22 200 53
MI 26 300 80
VNI 30 360 95
6.4 Accessories and hardware for filling
and topping up
Motors must be filled and topped up as shown in the
descriptions and accompanying diagrams from
section 6-6, Filling instructions, onwards.
The various components referred to in the individual
descriptions and diagrams are summarized here for
the sake of simplicity and shown in table 6-4,
Accessories and hardware.
Table 6-4: Accessories and hardware
Designation Diagram Size Part. no.
Vent valve
< 0.3 bar
B6523
> 0.8 bar
Filling valve
R³/
8
in.
B6514
R³/
4
in.
Screw plug
R³/
8
in.
6780 R³/
4
in.
M16 x 1.5
Filling screw - - - -
Protection cap - - 0236
Filling nipple
M10
(2)
M16
6.5 General information about filling
The 6.5 General information about filling in this
section applies to all motor types, unless stated
otherwise in the individual descriptions. If units that
require filling are not mentioned in these instructions,
special instructions must be requested from the
manufacturer.
6.5.1 Filling pressure
To avoid damage to the shaft seal and
pressure equalization system, the filling pressure at
the inlet of the screw connection must not exceed the
maximum pressure stated below when connected to
a water supply such as a household tap:

Motors with the designation MI: ..... 1.0 bar

All other motors: ............................. 0.5 bar
6.5.2 Duration of filling
Even though the filling liquid being filled overflows
from the venting pipe, there may still be residual air in
the motor. It is therefore recommended to repeat the
filling process after approx. 5 minutes to ensure that
all cavities are filled with liquid and all air bubbles
have escaped from the motor.
6.5.3 Filling valve, filling nipple, filling aids
After filling the motor the hose of the filling pump can
be removed from the nipple and the nipple can be
screwed out from the filling valve without any risk that
the liquid escapes from the motor as the filling valve
is designed to prevent any leakage.