Maintenance
Disassembly and assembly instructions
760.0003 GB - 151 999
BA-2011.04
Series AE.N
Construction Type RG
23
10 Maintenance
.
10.1 Disassembly and assembly
instructions
Trained customer service technicians are
available upon request for assembly and repair
tasks.
Caution!
Before starting repairs with your
own personnel or our technicians,
ensure that the pump is completely
empty and clean.
Make sure that any pumps sent for
repairs to our factory or a
contracted service station are clean
and empty!
In the interest of our employees and the
environment, we must refuse any pumps sent
for repair that are filled with liquid.
If we receive a pump that is filled with liquid,
we must invoice the customer/operator for the
cost of environmentally-sound disposal.
If pumps used to move hazardous materials
and/or environmentally harmful liquids require
repair, the customer/operator must
independently inform his internal assembly
personnel or, if the pump is sent back to our
factory or a contracted service center, our
technicians before sending the pump. In these
situations, documentation of the pumped
liquid, such as a DIN safety data sheet, must
be presented when requesting a customer
service technician.
Whenever tasks are performed on-site, always
inform your internal personnel or our assembly
technicians of any hazards that may arise
during the repairs.
These instructions describe the most important
disassembly and assembly tasks. The
assembly steps described in each of the
sections must be followed consistently.
10.1.1 Disassembling the
progressing cavity pump
Perform the following tasks before
disassembly:
1. Run the pumped liquid out of the
suction casing.
2. Disconnect the motor’s power cord.
Prevent the motor from switching on
unexpectedly.
3. All blocking devices in the feed and
pressure lines must be closed.
Be certain that the pump is
pressureless.
4. Remove safety guarding.
5. Remove feed and pressure lines as
well as all secondary piping.
6. Loosen and remove screws on the
pump feet.
10.1.2 Removing the stator
For the positions of referenced parts
refer to
sectional drawings on pages 43 and 45.
1. Remove hexagon nuts (609) and
washers (610) from the clamp bolts
(611).
2. Pull off discharge casing (504).
3. Remove any clamp bolts (611) and
brackets (612).
4. Pull off stator (402) from rotor (401).
Notice!
If difficult to move, simultaneously
turn stator (402) with a chain
wrench. Hold the drive shaft (118)
stationary.
10.1.3 Removing the rotor and rotor-
side joint
For the positions of referenced parts
refer to
sectional drawings on pages 43 and 45.
Remove the rotor and the rotor-side joint after
removing the stator (402)
Section 10.1.2
page 23
1. Support the worm shaft (50).
2. Remove hexagon nut (42), spring ring
(43), and washer (44).
3. Pull off the stuffing housing (40) with
the installed running gear cartridge
(70…87) over the rotor (401).
Caution!
The rotor is manufactured to close
tolerances. Make sure it is not
damaged.
