16
Series AE1L, AE.E, AE.N, AE.H, AE.V, AED1E, AED2N
Design ID, ZD
!
Press the greased groove roller bearing (103)
from the drive side with a matching piece of pipe
over the outer bearing ring into the bearing
bracket (110). Oil bearing position slightly before-
hand.
With pumps in horizontal design,
the sealing washer inserted in the
groove ball bearing must point towards the drive
side. Pumps in vertical design with bearing to the
top have groove ball bearings with two sealing
washers.
!
Insert the spacer ring (113) from the pump side
into the bearing bracket (110).
Please note that the installation
has to take place prior to
pressing in the shaft seal ring.
!
Fill the space of the shaft seal ring (112) with roller
bearing grease and smear the sealing lips.
!
Press the shaft seal ring (112) into the cleaned
seat of the bearing bracket (110).
Note:
The sealing lip with the hose spring of the
shaft seal ring must always point towards the side
to be sealed (inwards).
Press the ring in with a suitable pressing stamp.
Make sure that the pressure force is exerted as
close as possible on the outer diameter of the
shaft seal ring.
7.2.2.2 Installing the shaft seal with dismounted drive
shaft
!
For designs with shaft protector sleeve, mount the
O-ring (115) into the groove of the drive shaft
(118) and smear with lubricant (e.g. silicone oil,
polydiol, soft soap).
Do not use any normal oil.
!
Slide the shaft protector sleeve (206) with the in-
ner chamfer pointing towards the drive shaft head
onto the drive shaft (118).
•
Installing the stuffing box
!
Slide the stuffing boxcasing (204) onto the shaft
protector sleeve (206) respectively the drive shaft
(118).
!
Install the stuffing box (207) with designs P02,
P12 including flushing ring (208) and with designs
P03, P13 and P04, P14 including sealing cham-
ber ring (209) into the stuffing box casing (204).
Also see Chapter 7.1.2.3 “Installing new packing
rings”.
•
Installation of the mechanical seal, general
Mechanical seals are high-quality precision parts. The
assembly instructions of the mechanical seal manu-
facturers must be observed. During installation, gentle
treatment and utmost cleanliness are prerequisites for
trouble-free functioning. To ease assembly, you may
lubricate the surfaces across which the O-rings glide
with lubricants like for example silicon oil, polydiol or
soft soap.
Do not use any normal oil.
Note:
Make sure that parts that glide on top of each
other are always exchanged in pairs. When using
double PTFE-coated O-rings, make sure that the
seam of the outer coating points away from the as-
sembly direction. Otherwise the coating may open re-
spectively strip off (see figure 8).
Figure 8: Seam of the outer coating points away from
the assembly direction
•
Installing the single-acting mechanical seal
!
Drive the locking pin (220) into the mechanical
seal housing (214).
!
Press the mechanical seal counter-ring (219) with
the O-ring into the cleaned mechanical seal hous-
ing (214) concentrically.
Note:
Ensure even distribution of pressure and
observe the locking pin. The locking pin (220) may
not protrude on the inside.
!
Slide the rotating part of the mechanical seal (219)
onto the drive shaft (118).
Note:
Observe the fitting dimension respectively
position of the mechanical seal exactly as marked
during disassembly.
!
Insert grub screws, if provided, into the rotating
part of the mechanical seal (219) with the screw
fitting agent Loctite No. 241 or similar and tighten.
!
Slide the mechanical seal housing (214) with the
mechanical seal counter-ring (219) across the
drive shaft (118).
Note:
When sliding the mechanical seal housing
onto the drive shaft, make sure that the mechani-
cal seal housing is not jammed in order to avoid
damage to the mechanical seal counter-ring.
•
Installation of the mechanical seal, single-
acting with quench
!
Installation of the mechanical seal takes place as
described in the Chapter “Installing the single-
acting mechanical seal”.
!
Drive in the locking pin (220) with sealing agent
(251) Loctite No. 640 or similar.
!
Press the shaft seal ring (232) into the cleaned
mechanical seal housing (214). Do not grease the
sealing lip.
Note:
The sealing lip of the shaft seal ring must
always point towards the side to be sealed (in-
wards).
Press the ring in with a suitable pressing stamp.
Make sure that the pressure force is exerted as
close as possible on the outer diameter of the
shaft seal ring ring.
In order to widen the sealing lip
of the shaft seal ring, the
mechanical seal housing (214) with the integrated
shaft seal ring (232)must initially be slid onto the
drive shaft (118) in reverse direction with the shaft
seal ring forward.
After widening, pull off the mechanical seal hous-
ing (214) from the drive shaft (118) and reinsert it
quickly with the flange side pointing forward onto
the drive shaft in the correct position.