Flowserve MENBLOC 60Hz - Manual (Page 30)

MENBLOC 60Hz USER INSTRUCTIONS ENGLISH 71559945 - 02/13
Page 30 of 36 flowserve.com
a) Never do maintenance work
while the unit is connected to power.
b) Drain pump and isolate piping before
dismantling the pump.
The pump should be disassembled only if certain
signs of anomalies or malfunction are observed.
Disassemble only to the extent that the cause of
the problem may be reached.
In any case, the disassembly must be carried out
by qualified personnel who have read the
instructions of the leaflet and in particular the
safety instructions.
Disassembly must be done with great care to
avoid damage to the pumps internal parts. To
make reassembly easier, display parts in the
disassembly order. Protect all machined surfaces
from metal/metal contacts and from corrosion.
Before any disassembly it is imperative to:
a) Close the outlet and inlet valve.
b) Wait until the pump casing is at ambient
temperature.
c) Be sure that the pump casing is not under
pressure.
6.5.1 Dismantling of the MENBLOC unit pump
end
DISMANTLING OPERATIONS
MENBLOC
WITH
ADDED
PUMP
SHAFT
MENBLOC
WITH
EXTENDED
MOTOR
SHAFT
Unscrew the [6577-01] hexagon
bolts and remove the motor and
rotor unit from the pump casing
X X
Unscrew the [6570] screw,
remove the [2905] plain washer,
the [2250] impeller, the [6700]
key and the [4200] mechanical
seal
X X
If necessary unscrew the [6577-
02] hexagon bolts to withdraw
the cover for motor casing
X
If necessary unscrew the [6577-
02] hexagon bolts to withdraw
the casing cover of the lantern
bracket
X
Remove the [6570] screw and
withdraw the pump shaft
X
TO REMOVE DIRECTLY THE MOTOR FROM
THE PUMP UNIT
Unscrew the [6570] screw by
introducing the key into one of
the oblong holes of the lantern
X
Unscrew the [6577-03] hexagon
bolts and remove the motor
X
For the MENBLOC unit with an extended
motor shaft, it is possible to directly withdraw the
motor without dismantling the impeller and the
mechanical seal. The drawings represented in
chapter 8 of this notice locate the mentioned
components by their part number [ ].
It is possible to disassemble the motor and rotor
unit from the pump casing without disconnecting
the casing from the piping.
To achieve this unscrew the bolts part number
[6577-01].
The MENBLOC pump unit with an added pump
shaft is fitted with an IP 55 motor.
The MENBLOC pump unit with an extended motor
shaft is fitted with an IP 55 motor.