7 Servicing/Maintenance
72 of 132
Amacan P
5. Attach the crane hook to the bail and pull upright motor unit 80-1 including
rotor 818 with bearing and bearing housing 350. (
ð
Section 3.2.2, Page 12)
6. Place the pump set on the pump casing and bellmouth. Fasten it with hexagon
socket head cap screws 914.02. Secure the screwed connection with a thread-
locking agent (Loctite 243).
7.6.4.1.1 Leak test when installing the mechanical seal
Observe the following values for leak testing:
▪
Test medium:
compressed air
▪
Test pressure:
1 bar max.
▪
Test period:
5 minutes
1. The pressure must not drop during the test period.
If the pressure does drop, check the seals and screwed connections.
Then perform another leak test.
2. If the test has been successful, remove the testing device. Do not close the
leakage drain hole to allow drainage of any water ingress.
7.6.4.2 Drive-end mechanical seal — pump sizes 1500-... to 1600-...
350
914.02
818
80-1
571
X
a
b
c
d
e
433.01
L
243
Fig. 43:
Installing the drive-end mechanical seal, X = drilled hole for testing device
Table 25:
Key to the symbols and codes
Symbol
Description
L
243
Always secure screwed connections marked with this symbol with
Loctite 243
.
ü
The pump set has been positioned horizontally on suitable wooden supports and
is protected against rolling off.
1. Press the supporting ring (a) and primary ring (b) of mechanical seal 433.01 into
the drilled hole of bearing housing 350 together with an O-ring.
2. Gently insert the mating ring (c) and the tappet (d) until they rest against the
primary ring (b).
3. Press the mechanical seal in with an assembly sleeve until the grub screws (e)
can be tightened in the undercut of the shaft. Apply a thread-locking agent
(Loctite 243) to the grub screws (e).
4. For mechanical seals with a stationary seat lock, bolt the stationary assembly
(supporting ring (a) and primary ring(b)) to bearing housing 350. Apply a
thread-locking agent (Loctite 243) to the screwed connection.
5. Screw the testing device into the leakage drain hole (X) of bearing housing 350
and perform a leak test. (
ð
Section 7.6.4.1.1, Page 72)
