2563:127
Fig. 28: Fitting impeller type D
1. Slide impeller 230 onto the shaft end and fasten it with impeller screw 914.04.
2. Then, remove the impeller screw again.
3. Screw in an M8 x 100 eyebolt (not included in KSB's scope of supply) instead of
the impeller screw.
4. Push on suction cover 162 until it rest against the impeller.
5. Suspend the pump set by the eyebolt (not included in KSB's scope of supply).
6. Screw in levelling screws 904 until they abut against the pump casing.
7. Carefully lower down the pump set again.
8. Remove the suction cover.
9. Measure the height of screws 904 up to suction cover 162 and add 0.8 +/- 0.1 mm
to the height of every screw.
10. Re-insert the suction cover and fasten it with screws 914.03.
11. Suspend the pump set from the hoisting tackle and rotate the impeller by hand
to check that it rotates easily.
12. Remove the eyebolt (not included in KSB's scope of supply).
13. Insert and tighten the impeller screw.
7.5.3 Reassembling the motor section
NOTE
Before reassembling the motor section, check that all joints relevant to explosion
protection (flamepaths) are undamaged. Replace any components whose flamepaths are
damaged. Only use original spare parts made by KSB for explosion-proof pumps. Refer
to the "Flamepaths" annex for the position of the flamepaths.
DANGER
Incorrect screws
Explosion hazard!
▷
Always use the original screws for assembling an explosion-proof pump set.
▷
Never use screws of different dimensions or of a lower property class.
7.5.4 Leak testing
After reassembly, the mechanical seal area/lubricant reservoir must be tested for
leakage. The leak test is performed at the lubricant filler opening.
Observe the following values for leak testing:
▪
Test medium: compressed air
▪
Test pressure: 0.5 bar max.
▪
Test period: 2 minutes
7 Servicing/Maintenance
Amarex® N
47 of 66
Goodnal STP ST041 Biological Treatment (KSB WAS PUMP 1 & 2 PU-0530-010 OM Instructions) Vendor Manual
Q-Pulse Id VM381
Active 29/10/2013
Page 49 of 76
