Allante V8-273 4.5L (1991)
Evaporator Core: Customer Interest
Procedure B (Clean and Disinfect)
This procedure is for vehicles which already have an 11 fpi evaporator core or a tilted evaporator core which has lower water retention. The following
steps will provide a disinfecting operation to kill any microbial growth which may have developed on the evaporator core or within the case.
CAUTION:
This procedure should only be performed on a cold can irritating vapors can form in the engine compartment if the disinfectant coming from the
drain outlet contacts hot engine components.
Disinfectant can cause substantial, but temporary, eye injury. Do not get in eyes or on clothing.
Wash thoroughly with soap and water after handling.
First Aid - If disinfectant gets into eyes, hold eyelids open and flush with a steady, gentle stream of water for 15 minutes. Obtain medical attention if
irritation persists.
1.
Put on rubber gloves and safety goggles.
2.
Pour the small bottle of Goodwrench Air Conditioning System Disinfectant Kit, P/N 25533404, into the large bottle. Seal and invert the container
once or twice to mix contents.
3.
Connect battery charger to avoid draining the battery during cleaning procedure.
4.
Remove power module as described in the Service Information Manual leaving wiring connectors attached.
NOTICE:
Do not allow the metal heat sink of the power module to become grounded to any metal surface as internal circuitry damage may result.
CAUTION:
Care should be taken to prevent personal injury or bum if the power module heat sink is hot.
5.
Inspect heater/evaporator case for debris. Remove any debris present through the power module opening. If debris is embedded into the evaporator
core face and cannot be removed, the core will have to be removed from the vehicle and cleaned. If refrigerant oil is evident on the face of the
evaporator core, a refrigerant leak is present and the evaporator should be replaced. If a large amount of debris is present in the heater/evaporator
case, the air inlet screen should be sealed around the windshield wiper post holes and fender edges.
6.
Turn ignition on without starting engine and enter diagnostics. Command the air mix valve (door) to the maximum cold position and the blower to
"low" speed.
7.
Open all windows and doors. Exit vehicle.
8.
Place drain pan with at least a two-quart capacity below the heater/evaporator drain hole to catch disinfectant and rinse water runoff.
9.
Position a pedestal fan and turn on "high" to provide cross ventilation during cleaning procedure.
10.
Use Kent-Moore tool J 36645, or equivalent, siphon-type parts cleaning spray gun capable of delivering two ounces per minute of liquid when
driven with shop air at 80-90 psi. Insert the nozzle of the spray gun through the power module opening and insert the siphon hose into container of
disinfectant. Take care to place the bottle of disinfectant in a secure, upright position to avoid spilling the contents. Direct spray toward evaporator
face taking extra care to ensure adequate coverage of the corners and edges, completely saturating the entire core. Use the entire container of
solution.
CAUTION:
Do not allow disinfectant to come in contact with hot engine components such as the exhaust manifold as this may result in toxic fumes.
11.
Reach into the vehicle and turn the ignition to the off position, and allow the core to soak for five minutes.
12.
Reach into vehicle and start engine.
13.
Thoroughly rinse the evaporator core with one quart of clean water using the spray gun to rinse any disinfectant residue.
14.
Reach into the vehicle and turn the ignition to the off position and then reinstall power module.
CAUTION:
Care should be taken in handling the power module to prevent bums or personal injury from the heat sink which may be hot.
15.
Dispose of disinfectant and rinse water runoff collected in drain pan into a sanitary drain system.
