Maintenance
shaft seal is malfunctioning. If the oil loss is only slight,
the pump may still be operated for some time, provided
the lost oil is topped up regularly.
Collect the oil which drips out under the
motor. There is the danger that someone
may slip.
Have the pump repaired.
5.8.1 Required Special Tools
(see Fig. 14)
1.
Two-armed puller for the bushing of the RUVAC
WA/WAU 151, 251 and 501. A suitable puller must
be adapted according to Fig. 14/c. In the case of the
RUVAC 1001 and 2001 a commercially available
puller will do.
2.
Pulling device for the coupling of the RUVAC
WA/WAU 151, 251 and 501 according to Fig. 14/b.
3.
Shaft seal driver according to Fig. 14/b.
The shaft seal drivers can be ordered at LHVP Export in
the USA.
Order No.:
WA/WAU 151/251/501
722 81027
WA/WAU 1001/2001
722 81028
5.8.2 Preparations
Unscrew sealing screw (13/21) with the
gasket, drain the oil out from the shaft seal
housing and screw the sealing screw back in
using a gasket which is in perfect condition.
Support the motor so that it can not drop.
Unscrew the nuts (13/18) and remove the
motor with the coupling piece (13/17).
Remove protection tube (13/16). Remove the coupling
element (13/15).
Unscrew screw (13/19) with the disc and pull off coupling
piece (13/14) using the puller (Fig. 14/a).
Remove key (13/13).
Unscrew screws (13/20).
5.8.3 RUVAC WA/WAU 151, 251, 501
Pull the shaft seal housing (13/8) out. Forcing threads
are provided on the shaft seal housing for this purpose.
Take the O-ring (13/4) out of the flange of the coupling.
Use the puller (Fig. 14/c) to pull the bushing (13/3)off
from the shaft.
Take the O-ring (13/2) from the shaft.
Take the O-ring (13/5) from the housing. Remove
securing ring (13/6).
Pull out the shaft seal (13/7).
Take out snap ring (13/12) and felt ring (13/11).
Take out shaft seal (13/10). Remove securing ring (13/9).
It is strongly recommended always to exchange the shaft
seals, the bushing and the felt ring against new parts.
Clean all other parts and replace them as required.
Fit securing ring (13/9).
Use shaft seal driver (14/b) to drive the shaft seal (13/10)
down to the securing ring (13/9) (for position of the shaft
seal refer to Fig. 13).
Fit felt ring (13/11) and snap ring (13/12).
Use shaft seal driver (14/b) to drive the shaft seal (13/7)
down. Here the depth must be defined by the tool (for
position of the shaft seal refer to Fig. 13).
Fit securing ring (13/6).
24
Warning
Warning