
How to replace the ball valve
56
SM/Transsonic_LC/1104/D
© Elma GmbH & Co KG
12
How to replace the ball valve
The ball valve is screwed onto the drain duct and sealed with
Loctite. On the units of type T700 and LC130H and bigger there
is a lock nut inside the unit. Unscrewing the ball valve without
prior heating of the Loctite and/or loosening of the lock nut can
damage the sealing of the internal drain duct.
Therefore, observe the following instructions on the
replacement of the ball valve.
Deposits of dirt particles in the drain system can damage the
Teflon sealing in the ball valve. Damage can also be caused by
aggressive cleaning media.
2-way ball valve 1/2": 200 000 6039
2-way ball valve 3/4" : 200 000 0484
2-way ball valve 3/8“: 200 000 0608
To replace the ball valve proceed as follows:
Cause of breakdown
Elma Order No.
How to proceed
1. Open the unit as described in
section 7.
2. Loosen the lock nut (if available);
see Illustration 12.1.4
.
3. Heat the drain around the screw connection with a hot air
fan to resolve the Loctite sealing (
Illustration 12.1.1 /
12.1.5
).
4. Use a suitable fork wrench to unscrew the drain duct.
Secure the drain duct with a pipe wrench to avoid an
unintentional removal of the sealing in the duct angle
(
Illustration 12.1.3 / 12.1.6
).
5. Remove any remains of Loctite from the thread of the drain
duct and clean the thread e.g. with alcohol.
6. Clean the inner thread of the new ball valve e.g. with
alcohol.
7. Prepare the thread of the drain duct with Teflon tape or
Loctite. Observe hardening period of sealing media (before
filling the transducer tank with water).
8. Mount the ball valve and tighten the lock nut if available.
Note:
Several unit types have a lock nut which secures the
drain duct inside the unit; this can cause the handle of the ball
valve to be positioned other than horizontally when the end of
the thread is reached. If this is a problem, loosen the lock nut
again and adjust the ball valve accordingly.
Содержание LC130H
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