Zanotti un0 010, Workshop Manual

Page: 63 / 248

52
Cooling Circuit
3.3 Valves
Valve Disassemble
(a)
Remove fixing nut and coil.
(b)
Unscrew cover from valve body.
(r)
CAUTION
!
Valve cover holds a
compressed spring! It may hump out by itself.
(c)
Remove and inspect valve diaphragm and
plunger.
(d)
Remove and check O-ring.
(e)
Visually check for dirt and clean inside
valve.
(f)
Assemble valve Cover, Spring and
Diaphragm Core.
(g)
Place O-ring in position and screw Valve
cover assembly.
CAUTION
!
Lubricate O-ring with POE32
oil before.
YS 3-Way Replacement
(a)
Disconnect unit from electrical supplies (Battery and Main).
(b)
Open unit door and right or refrigeration side cover and fold down
electrical Box.
(c)
Recover Refrigerant 3.2.2 Section.
(d)
Remove solenoid coil from valve releasing fixing nut or seeger
ring.
(e)
Disconnect equalization line from valve.
(f)
Release valve from plastic bracket.
CAUTION
!
Dismount valve sup- port avoiding melting and
burning problems.