Maintenance
Disassembly and assembly instructions
26
Series AE1F, AE1L, AE.E, AE.N, AE.H, AE.V, AED1E,
AED2N
ID, ZD construction types
BA-2011.11
760.0002 GB - 150 500
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 indepen-
dently 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. Disconnect the motor’s power cord.
Prevent the motor from switching on
unexpectedly.
2. All blocking devices in the feed and
pressure lines must be closed.
Be certain that the pump is
pressureless.
3. Drain the pumped liquid from the
suction casing. To do this, remove
screw plug (502;
Sectional drawing
on page 43, 44, 45, 46, 47, 48 and 49).
Notice!
Use a collection container.
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
sectional drawings on pages 43, 44, 45, 46,
47, 48 and 49.
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 pointy nose
pliers. Hold the drive shaft (118)
stationary.
5. If the stators are made of plastic or
metal, remove stator seals (403) and
(404).
6. Remove reducing flange (512) and O-
ring (513) if present.
10.1.3 Removing the rotor and rotor-
side joint
For the positions of referenced parts
sectional drawings on pages 43, 44, 45, 46,
47, 48 and 49.