7 Servicing/Maintenance
44 of 72
Amarex N
a)
b)
M = 40 mm
2563:109
2563:108
M = 40 mm
903
411
Fig. 20:
Topping up the lubricant a) Versions YL and WL; b) Versions YL, WL for pump
sizes 50-170... and 65-220
2.
Fill lubricant through the lubricant filler opening until the lubricant in the
lubricant reservoir reaches the required level M (see the following table).
3.
Screw in screw plug 903 with new joint ring 411. Tighten to a torque of 23 Nm.
Table 20:
Lubricant level
Motor sizes
M
[mm]
50-22*
65-170
80-220
100-220 (versions YL and WL)
40
50-17*
65-220 (versions YL and WL)
40
7.2.2.1.4.2 Changing the lubricant — version UL
Draining the lubricant
2563:112
Fig. 21:
Draining the
lubricant
ü
The suction cover and the impeller have been removed.
1.
Place a suitable container under the pump set.
2.
Move mechanical seal 433.02 along the shaft.
3.
Drain the oil.
Filling in the lubricant
2563:124
Fig. 22:
Filling in the
lubricant
1.
Fill 0.25 litres of oil through the opening between the stationary part of
mechanical seal 433.02 and rotor 818.
2.
Thoroughly clean rotor 818 and the contact face of the stationary part of
mechanical seal 433.02. Remove any oil residues.
3.
Fit the rotating part of mechanical seal 433.02.
4.
Fit impeller 230 and suction cover 162. Observe the tightening torques.
7.2.2.2 Lubricating the rolling element bearings
The rolling element bearings of the pump sets are grease-packed and maintenance-
free.
Summary of Contents for Amarex N
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