22
Pump NB/FB/WP/SM/F
Version: 27216 - E
Schmalenberger GmbH + Co. KG
D-72072 Tübingen / Germany
4.2.4
Dismantling the Pump
Step 1:
Loosen the spiral housing fastening screws item 902.01 and corresponding nuts item
920.01. Remove the spiral housing. To loosen the seating, strike the spiral housing several
times with a soft-face hammer directly next to the seating on the pressure cover.
Remove the gasket item 400 from the pump housing and pressure cover.
Step 2:
Loosen the impeller nut item 922 and unscrew it from the motor shaft item 819.
Pull the impeller item 233 off the motor shaft item 819. You will need an extractor to do this.
Take the keys item 940 out of their seating.
Step 3:
Remove the distance washer item 554. Remove the mechanical seal item 433.
Step 4:
Version 1 = Pressure cover clamped in:
Loosen the pressure cover item 163 from the motor bearing flange and pull it off of the
shaft. If it will not comes loose, a few light taps with a soft-face hammer should help. Make
certain when doing so not to damage the counter ring.
Version 2 = Pressure cover screwed on:
Loosen the nuts item 920.01 and unscrew them. Carefully pull off the pressure cover item
163.01. If they will not comes loose, a few light taps with a soft-face hammer should help.
Make certain when doing so not to damage the counter ring.
Step 5, catchment chamber systems (SKS),
(see Fig. "
Type SKS /GLRD Tandem
(TLS)
" and Fig. "
Type SKS / GLRD Back to Back (catchment chamber)
" in chapter
"Spare Parts".):
Unscrew the nuts item 920.01 on the pressure cover item 163. Loosen the pressure cover
item 163 and carefully remove it. As you do so, make certain not to damage the counter
ring.
Identify where the double mechanical seal (GLRD) is seated on the shaft for reference
during reassembly. Loosen the threaded pin in the set collar item 506 to loosen the GLRD
from the shaft and then remove it.
Unscrew the nuts item 920 on the motor flange. Remove the catchment chamber from the
motor flange. If it will not comes loose, a few light taps with a soft-face hammer should help.
Make certain when doing so not to damage the counter ring.
Arrangement: Tandem
Removal of the front GLRD is as described in steps 1-3. Removal of the rear GLRD is as
described for Back to Back.