Lotus Elise Service Notes page 467

Lotus Service Notes
Section PH
PH.12 - EXPANSION VALVE
The expansion valve is fitted onto the evaporator pipes at the front of the a.c. housing in the climate
chamber, and is accessible from within the front services compartment. To replace the valve:
1. Recover the refrigerant using suitable equipment connected to the service ports at the right hand front of
the engine bay.
2. Release the single M6 screw securing the clamp plate to the top of the expansion valve, and withdraw the
plate and both pipes from the valve. Immediately cap the pipes and ports to prevent the ingress of dirt
and moisture.
3. Release the two M5 screws securing the valve to the evaporator pipes, and withdraw the valve from the
pipes. Immediately cap the pipes and ports to prevent the ingress of dirt and moisture.
Outlet to compresser
M6 clamp screw
M5 clamp screw (x2)
Lower clamp plate
(tapped)
Evaporator outlet pipe
Inlet from receiver-drier
'O' ring seal
Top clamp plate
Expansion valve body
'O' ring seal
Evaporator inlet pipe
EE]
4. Before refitting, renew all the connector 'O' rings, and coat with an approved refrigerant oil.
5. Fit the threaded clamp plate around the evaporator pipes, and secure the expansion valve onto the pipes
with the two M5 screws tightened to 5 - 6 Nm.
6. Use the second clamp plate to secure the two pipes to the expansion valve, tightening the single M6
screw to 7 - 9 Nm.
7. Recharge the system with 0.88 kg of R134a.
2000 / 04
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