Mitsubishi Electric PUZ-WZ50VAA Service Manual page 53

(3) How to attach and detach the coil of linear expansion valve
<Composition>
Linear expansion valve is separable into the main body and the coil as shown in the diagram below.
Lead wire
<How to detach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and detach the coil by pulling it
upward.
Be sure to detach the coil holding main body firmly. Otherwise
pipes can bend due to stress.
<How to attach the coil>
Hold the lower part of the main body (shown as A) firmly so that
the main body does not move and attach the coil by inserting
it downward into the main body. Then securely attach the coil
stopper to main body. (At this time, be careful that stress is not
added to lead wire and main body is not wound by lead wire.)
If the stopper is not firmly attached to main body, coil may be
detached from the main body and that can cause defective
operation of linear expansion valve.
To prevent piping stress, be sure to attach the coil holding the
main body of linear expansion valve firmly. Otherwise pipe may
break.
OCH816
Coil
53
Stopper
Main body
A
Be sure to attach
the stopper.
The position of
the stopper
depend on the
type of the
installed LEVs.
A