
Operation Manual / Power2 650-M / Low-pressure stage
7 Periodic maintenance / 7.4 Cleaning the filter silencer
© Copyright 2022 ABB. All rights reserved.
HZTL4065_EN
Rev.E
March 2022
CAUTION
Penetration of dirt and foreign particles
Any penetration of dirt and foreign particles into the compressor can dam-
age it.
u
Fit the connecting rods (81269) correctly in the slots on the filter silencer
body (81135).
u
It must not be possible to rotate or move the cover grid (81266) after as-
sembly.
u
Check the position and alignment of the connecting rods during and after
assembly.
Fig. 19: Cleaning the filter silencer (2)
u
Place cover grids (81266) evenly and in the correct position.
u
Push connecting rods (81269) through the lugs of the cover grids (81266).
u
Connect the connecting rods (81269) with the screws (81272). When tightening the
screws (81272), make sure that the flattened ends of the connecting rods (81269) are cor-
rectly positioned on the edge of the filter silencer body (81135).
u
Tighten screws (81272) alternately and evenly. Observe tightening torque
Screw
Tightening torque [Nm]
81272
20
Table 18: Tightening torque (81272)
u
Fit the lock nuts (81273) on the screw (81272). Observe tightening torque.
Lock nut
Tightening torque [Nm]
81273
40
Table 19: Tightening torque (81273)
u
If present: Fit the filter ring (81265)
(see Fig. 18: Cleaning the filter silencer
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