Dismantling And Re-Assembly; Dismantling; Re-Assembly - salmson NFCH Installation Et Mise En Service

ENGLISH
taken from following list or equivalent :

Klüber Microlube GL 261 (Standard)

Shell Aerogrease 16

Esso Unirex N3
Properties
 Consistency according to DIN 51818, class 1 (NLGI1)
 Worked penetration according to DIN ISO 2137 (0,1 mm) 310-340
 Service temperature : 140°C
 Dropping point : 250°C according to DIN ISO 2176
Grease capacity : 15g.
9.2.1.2GREASE CHANGE INTERV ALS
Ball bearing is greased before delivery with Microlube GL261.
Greasing intervals :
Speed
1450 RPM
1750 RPM
2900 RPM
3400 RPM
If a different grease type must be used, be sure ball bearing is perfectly
cleaned from previous grease before re-greasing.
Quantity for regreasing : 10g.
After 10000 operating hours or after 2 years, bearings should be
dismantled, cleaned and filled again with grease. For unfavorable
operating conditions (severely damp, dusty atmosphere or hot service)
greasing intervals may be shortened.

9.3 DISMANTLING AND RE-ASSEMBLY

9.3.1

DISMANTLING

Make sure that electric power is disconnected and could not be
switched on again by fault during maintenance operations.
• Drain the piping at least between the isolating valve on the suction and
discharge side.
• If necessary disconnect any measuring sensors and gauges.
• Remove drain plug and drain the pump casing.
• If necessary, remove connections to mechanical seal auxiliary piping.
• If necessary drain oil from bearing bracket and remove constant level
oiler to avoid damages during following operations.
• Pump casing can be kept fastened to pipe work.
• Remove motor fastening screws and move the motor so that there is
enough space to remove the back pull-out assembly.
When using a coupling with spacer part, it is not necessary to
move the motor rearward.
• Dismantle coupling guard, half coupling on pump side and pump foot
from bearing housing.
Greasing intervals
3200 hours
2800 hours
2000 hours
1700 hours
1. Loosen nuts 92.00 and remove washers 55.00.
2. Remove back pull out assembly from casing 10.20 and take casing seal
40.00 apart.
3. Loosen nut 92.20 and remove lock washer 93.10.
4. Remove impeller 23.00 and key 94.01.
5. Remove screws 90.13 from bearing bracket 33.00 and remove casing
cover 16.10 with the sealing housing 44.10. It is not necessary to
dismantle the cover 47.10.
6. Mark the position of stop ring 48.50 on the shaft.
7. Remove mechanical seal 43.30 with care.
8. If needed the housing 44.10 can be removed : loosen screws 91.40
and washers 55.02. Pull out the cover 47.10 from bearing bracket 33.00.
9. Remove key 94.00, loosen screws 90.10 and remove cover 36.00.
10. Slide out shaft 21.00 with the ball bearing 32.10 from bearing
bracket 33.00.
11. Remove circlip 93.20, ball bearing 32.10 and spacing ring 52.50 from
the shaft 21.00.
9.3.2

RE-ASSEMBLY

Refer to tightening torques table for screws and bolts.
Never use grease : EPDM seals inside !
All pumps parts should be cleaned before assembly. Silicon based
lubricant or glycol, glycerin or water with soap can be used to ease
assembly of gaskets. Don't add lubricant on flat gaskets.
1. Slide ball bearing onto the shaft.
2. Assemble bearing bracket and place cover 47.10 with the vent screw
90.30 as shown. Then fasten bearing bracket 33.00.
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