Manual A/C Systems
SERVICE PROCEDURE FOR MANUAL A/C SYSTEMS1. Latch the gearshift selector lever in "P" (Park) for automatic transmission equipped vehicles, or shift into "N" (Neutral) for manual transmission equipped vehicles. Fully set the parking brake and place wood blocks (4" x 4" size, or larger,) at the front and rear of each tire. Cover front and rear seats.
WARNING: UNEXPECTED AND POSSIBLY SUDDEN VEHICLE MOVEMENT MAY OCCUR IF THESE PRECAUTIONS ARE NOT TAKEN.
2. Check ALL A/C system condensate drains for obstructions. Any obstructions must be eliminated before proceeding.
SUCTION/ACCUMULATOR PRESSURE SWITCH:
A/C COMPRESSOR CLUTCH CONNECTOR - FS-6:
A/C COMPRESSOR CLUTCH CONNECTOR - HR-980:
TEMPO/TOPAZ, ESCORT/LYNX A/C COMPRESSOR CLUTCH CONNECTOR:
3. With vehicle engine turned off, disconnect the electrical connector at the A/C clutch. If electrical connector is hard to reach, disconnect pressure switch at suction/accumulator.
NOTE: It will be necessary to operate vehicle engine during this procedure to provide a source of vacuum required by some A/C control systems and to prevent battery drain.
WARNING: ONLY OPERATE THE ENGINE IN A WELLVENTILATED AREA TO AVOID CARBON MONOXIDE POISONING.
4. Carefully read the following cautions for the Disinfectant Part A, Disinfectant Part B, and their mixture.
Keep out of reach of children.
WARNING - HAZARDS TO HUMANS:
Causes eye irritation. Wear safety goggles during mixing and application to avoid contact with eyes. Can cause respiratory irritation. Wear a NIOSH approved acid gas/organic vapor respirator with dust/mist pre-filter according to instructions, to avoid inhalation during application. Disinfectant may bleach clothing. Wash thoroughly with soap and water after handling.
FIRST AID: If in eyes, flush eyes with plenty of water. If inhaled, remove to fresh air. For both conditions, seek medical attention if irritation persists.
STORAGE AND DISPOSAL: Store in cool place in original containers. Always replace caps. Keep upright. Wash empty containers thoroughly and discard in a safe place. Do not reuse empty containers.
5. To prepare disinfectant for use, add all of the container labeled "Motorcraft A/C System Disinfectant Part B" to the larger container labeled "A/C System Disinfectant Part A". To mix completely, replace cap and gently turn container over once or twice. Pour the disinfectant mixture into the fluid container of the Dirkes Industries Spray Unit, Model No. 3366. Set the air supply regulator between 40 and 45 psi.
AEROSTAR A/C CONTROL:
TEMPO A/C CONTROL:
TAURUS A/C CONTROL:
LTD CROWN VICTORIA A/C CONTROL:
6. Start engine. Set A/C system controls to the lowest blower speed (blower off if A/C system will permit), panel airflow, (MAX A/C or NORM A/C), and temperature control set at the midpoint between "cool" and "warm". Spray the disinfectant into the A/C system through each defroster, side window demister, panel register, and floor duct opening for 5 to 10 seconds per opening.
NOTE: Figures shown are examples of different control heads used in Ford products; not all vehicle lines are shown.
DEFROSTER APPLICATION:
DEMISTER APPLICATION:
PANEL REGISTER APPLICATION:
FLOOR DUCT OPENING (PASSENGER SIDE):
FLOOR DUCT OPENING (DRIVER SIDE):
RECIRCULATING DOOR APPLICATION:
Step 6 continued.
Procedure illustrated for Thunderbird - Other vehicles typical.
7. Repeat Step 6 with the A/C system still at the lowest blower speed but set for floor airflow (HEAT or FLOOR).
8. Repeat Step 6 with the A/C system still at the lowest blower speed but set for defrost airflow.
9. With A/C system still set for defrost airflow spray the exposed surface of the outside/recirculating door for 5 to 10 seconds.
ESCORT/LYNX, TEMPO/TOPAZ OUTSIDE AIR INTAKE LOCATION:
TEMPO/TOPAZ COWL COVER:
PROTECTIVE SCREEN ON OUTSIDE INTAKE ESCORT/LYNX, TEMPO/TOPAZ:
SPRAYING PROCEDURE AT OUTSIDE INTAKE:
10. Turn the A/C system on at high blower; set for panel air with recirculating inside airflow (MAX A/C). Spray the remainder of the disinfectant into the recirculate air inlet. Point disinfectant spray toward center of blower wheel if visible; otherwise, direct spray toward center of airflow path. All of the disinfectant must be used for maximum effectiveness.
CAUTION: Check the drain frequently to make sure the disinfectant is not collecting inside the evaporator core.
NOTE: For vehicles which have limited access to the recirculate air inlet opening an alternate method may be used. Set the system for panel air with outside airflow (NORM A/C). Spray the remainder of the disinfectant into the A/C system through the outside air inlet opening at the cowl. Point disinfectant spray toward center of blower wheel if visible; otherwise, direct spray toward center of airflow path.
IMPORTANT!
Spray liquid until fluid container is completely empty. After fluid container is empty, raise fluid hose to maintain a solid column of liquid. Continue to raise fluid hose forcing the fluid through the spray nozzle. This will use all of the material and only a minimum of residue will remain in the fluid hose.
NOTE: This minimizes cleaning time for the equipment.
DRYING PROCEDURE AT RECIRCULATING DOOR:
DRYING PROCEDURE AT OUTSIDE INTAKE:
11. Dry the A/C system completely by placing a 1500 watt hot air gun at the recirculate air inlet. Operate the A/C system on high blower for 1/2 hour. Place the hot air gun at outside air inlet if alternate method was used to apply the disinfectant.
CAUTION: Do not use higher temperature dryers.
12. While the vehicle's A/C system is drying, clean the spray unit with isopropyl alcohol to remove any residual disinfectant from the spray fluid container and hoses. Wear safety goggles when cleaning the spray unit.
WARNING: ISOPROPYL ALCOHOL IS FLAMMABLE. CLEAN SPRAY UNIT AWAY FROM ANY OPEN FLAME OR OTHER IGNITION SOURCES.
To Clean: With spray unit off, pour 1 to 2 oz. isopropyl alcohol into fluid container. Cover hole in cap with thumb and shake container. Turn spray unit on and spray through nozzle to flush system. Pour alcohol trapped in fluid container into drain. Continue spraying air until dry.
The easiest and best way to have a good working spray unit is to keep it clean.
Do not take the spray nozzle apart unless absolutely necessary. If clogged, follow the directions included with the spray unit for disassembly.
13. Before proceeding, read the following warnings for mold inhibitor use:
Keep out of reach of children.
WARNING - HAZARDS TO HUMANS:
Causes eye and skin irritation. Wear safety goggles to avoid getting in eyes. Avoid contact with skin. Can cause respiratory irritation. Wear a NIOSH approved acid gas/organic vapor respirator with dust/mist pre-filter according to instructions, to avoid inhalation during application. Mold inhibitor may be harmful if swallowed. Without safety equipment, repeated exposures may damage the nervous system.
FIRST AID: If in eyes, immediately flush with plenty of water. If on skin, remove with isopropyl alcohol followed by rinsing with plenty of water. If inhaled, remove to fresh air. For above conditions, seek medical attention if irritation persists. If swallowed, DO NOT induce vomiting - call a physician.
STORAGE AND DISPOSAL: Store in a cool place in original container. Always replace cap. Keep upright. Do not contaminate water, food, or feed by storage or disposal. Do not incinerate; heating of container and contents may produce toxic fumes. Dispose of in a sanitary landfill, or by other procedures approved by state and local authorities.
Mold inhibitor wastes are toxic. Improper disposal of excess mold inhibitor is a violation of Federal law. If these wastes cannot be disposed of according to label instructions, contact your state pesticide or environmental control agency, or the hazardous waste representative at the nearest EPA Regional Office for guidance.
To remove mold inhibitor drips, spills, and overspray from most surfaces, apply isopropyl alcohol.
14. With spray unit off, pour the contents of the container labeled "Motorcraft Mold Inhibitor" into the spray unit's fluid container. Set the air supply regulator between 40 and 45 psi.
15. Set A/C system at the lowest blower speed (blower off if system will permit), and panel airflow to (MAX A/C or NORM A/C). Spray mold inhibitor into each defroster, side window demister, panel register, and floor duct opening for 1 to 5 seconds each.
16. Repeat Step 15 with the A/C system still at the lowest blower speed but set for floor airflow (HEAT or FLOOR).
17. Repeat Step 15 with the A/C system still at the lowest blower speed but set for defrost airflow.
18. With A/C system still set for defrost airflow spray the exposed surface of the outside/recirculating door for 1 to 5 seconds.
19. Set the A/C system at the high blower speed and panel air with recirculating airflow (MAX A/C). Spray the remainder of the mold inhibitor into the recirculate air inlet. Point mold inhibitor spray toward center of blower wheel if visible; otherwise, direct spray toward center of airflow path. All of the mold inhibitor must be used for maximum effectiveness.
NOTE: It may be necessary to spray the mold inhibitor into the A/C system through the outside air inlet opening at the cowl, Step 10. Point mold inhibitor spray toward center of blower wheel if visible; otherwise, direct spray toward center of airflow path.
20. With the engine off, reconnect the electrical connector at the A/C clutch or reconnect the pressure switch at the suction/accumulator.
CAUTION: The A/C system must not be operated with the A/C or DEFROST/MIX function activated for 24 hours after treatment. This allows time for the mold inhibitor to completely cure. The system may only be operated in vent, economy, or heat positions for the first 24 hours. Condensate formed during A/C operation could rinse away any uncured mold inhibitor. This will shorten the effectiveness of the treatment.
21. Place hang-tag on rearview mirror to instruct customer not to operate the A/C system for 24 hours.
22. Clean spray unit with isopropyl alcohol. Wear safety goggles when cleaning the spray unit.
WARNING: ISOPROPYL ALCOHOL IS FLAMMABLE. CLEAN SPRAY UNIT AWAY FROM ANY OPEN FLAME OR OTHER IGNITION SURFACE.
To Clean: With spray unit off, pour 1 or 2 oz. isopropyl alcohol into fluid container. Cover hole in cap with thumb and shake container. Turn spray unit on and spray through nozzle to flush system. Pour alcohol trapped in fluid container into drain. Continue spraying air until dry.
Do not take the spray nozzle apart unless absolutely necessary. If clogged, follow the direction included with the spray unit for disassembly.
NOTE: To remove any residual fluids, flush the spray unit with isopropyl alcohol after each disinfectant and mold inhibitor application. This will minimize clogging at the spray nozzle and inhibit corrosion.