Siemens SIMOTICS FD 1MM1 Series, Operating And Installation Instructions

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3. Warm up the labyrinth sealing ring. Push the labyrinth sealing ring to approx. 3 mm before
the bearing cover before the paint or adhesive cures on the set screws.
3 mm
Figure 9-7 Position the set screws for the labyrinth sealing ring on the outer bearing cover
4. Locate the labyrinth sealing ring in position by screwing the set screws in. Check that the tips
of the set screws engage with the keyway with a short axial movement.
The correct axial position is obtained when the locating setscrews screwed into the keyway
engage.
9.2.5 Seal the motor
Extreme caution and attention to cleanliness are vital to installation.
● Clean all bare joints between parts such as housings, bearing shields and bearing bushes
etc., and remove old sealant material.
● Smear bare joints between parts with non-hardening, permanently flexible sealant, such as
"Hylomar M". Follow the manufacturer's application and safety instructions when doing this.
● Check all sealing elements, such as those on the terminal boxes, for elasticity, aging or
damage, and renew them if they are no longer effective.
Replacing seals
1. Replace the seals if necessary with original parts or with tested sealing elements.
2. Completely bond the seals to the motor and the air intake housing. It is impermissible to
have gaps and holes where seals make contact.
3. Surfaces whose mating faces are sealed using liquid sealant can be resealed by applying
the original liquid sealant (Hylomar M).
4. Surfaces whose mating faces are sealed using sealings that adhere to one side only can be
resealed with the original sealing using the original adhesives (Loctite).
Maintenance
9.2 Corrective Maintenance
SIMOTICS FD 1MM1
140
Operating Instructions 02/2019