3. Drain the leakage.
NOTE
If more than 0.25 litres of leakage should escape we recommend to replace the
mechanical seals.
4. Close screwed plug 903.34 with joint ring 411.34 again.
7.2.2 Lubrication and lubricant change
7.2.2.1 Lubricating the mechanical seal
The mechanical seal is supplied with lubricant from the lubricant reservoir.
7.2.2.1.1 Intervals
Replace the lubricant after every 10,000 operating hours but at least every 3 years. (
7.2.2.1.2 Lubricant quality
The lubricant reservoir is filled at the factory with an environmentally friendly, non-
toxic lubricant of medical quality (unless otherwise required by the customer).
The following lubricants can be used for lubricating the mechanical seals:
▪
Thin-bodied paraffin oil; made by Merck, No.: 7174
▪
Merkur white oil Pharma 40; made by DEA
▪
Equivalent brand of medical quality, non-toxic
▪
Water-glycol mixture
▪
All non-doped and doped motor oils of classes SAE 10W to SAE 20W
WARNING
Contamination of fluid handled by lubricant
Hazardous to persons and the environment!
▷
Using machine oil is only permitted if the oil is disposed of properly.
7.2.2.1.3 Lubricant quantity
Table 20: Lubricant quantity
Motor sizes
5 2, 6 2, 8 2, 12 2, 17 2,
5 4, 7 4, 11 4, 16 4,
4 6, 6 6, 9 6, 12 6
23 2,
23 4, 29 4,
20 6, 26 6,
10 8, 17 8, 21 8
37 2, 55 2,
35 4, 50 4, 65 4,
32 6, 40 6, 50 6,
26 8, 35 8
Pump size
40-250
2.1 l
-
-
80-250
80-251
100-240
100-250/251
150-251
80-315/316
4.6 l
7 l
2.1 l
100-315
100-316
-
150-315
200-315/316
100-401
-
4.5 l
6.5 l
(D impellers: 2.1 l)
150-400/401
151-401
Recommended quality of
lubricant
Alternative:
7 Servicing/Maintenance
40 of 74
Amarex KRT
Goodnal STP ST041 Sewage Delivery (Amarex KRT Submersible Motor Pump) Vendor Manual
Q-Pulse Id VM362
Active 29/10/2013
Page 42 of 96
