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Lotus Service Notes Section PN
Outlet to compresser
Inlet from receiver-drier
M6 clamp screw 'O' ring seal
Top clamp plate
M5 clamp screw (x2)
Expansion valve body
Lower clamp plate
(tapped) 'O' ring seal
Evaporator outlet pipe
Evaporator inlet pipe
p71
Refit the HVAC unit in reverse order to removal:
- If a new evaporator is fitted, add 30 cm³ of approved refrigerant oil to the system.
- Use new 'O' rings on the pipe connections, and lubricate with refrigerant oil.
- Recharge the system with 0.625 kg of R134a.
PN.11 - AIR DISTRIBUTION UNIT (ADU)
The airflow distribution unit is mounted on top of the chassis scuttle, sandwiched between the underside of
the fascia top/demist duct and the chassis. The unit comprises several plastic mouldings bonded and rivetted
together to contain the rotary distribution drum which controls the airflow to the windscreen, face level vents,
and footwells. The stepper motor for the drum is mounted on the left hand side of the unit.
To Remove the Air Distribution Unit
1. Remove the main fascia panel (see sub-section VE.8).
2. Remove the footwell duct between the side of the ADU and the passenger side scuttle aperture, by prising
away from its double sided tape.
3. Remove the 2 bolts securing the ADU integral rear bracket to the scuttle.
4. From within the footwell, release the single bolt within the scuttle top central reinforcement channel.
5. Withdraw the ADU and disconnect the drum actuator harness plug.
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