Safety Precautions - Denso First Time Fit Manual De Instrucciones

SAFETY PRECAUTIONS

DWARNING: It has been determined that mixtures of R134a and air can result in combustion
when exposed to an ignition source. Shop air should not be used for leak checking.
Follow the following precautions whenever working on the A/C system. Injury or death may
occur if these specific precautions are not followed:
• Always wear safety goggles.
• Avoid skin contact with refrigerant or refrigerant oil.
• Work in a well-ventilated area.
• Never release refrigerant into the atmosphere.
• Never expose refrigerant containers to direct heat or temperature in excess of 125 ˚F.
• Never expose refrigerant to an open flame.
NOTE: Do not remove protective caps from the evaporator until it is ready to install.
Evaporator Removal
The information below explains the necessary procedures and tools to remove and install an
evaporator.
NOTE: For more detailed instructions, please refer to the manufacturer's vehicle service
manual. Bolts, where specified, must be torqued to the proper specification. If torque is not
specified please refer to the vehicle manufacturer's service manual.
1. Use a refrigerant identifier to verify the type of refrigerant in the system.
2. Connect the appropriate refrigerant charging station to the A/C system and recover any
refrigerant in the system.
3. Disconnect the refrigerant lines from the evaporator.
4. Remove the evaporator from the vehicle.
NOTE: Save plastic clips, grommets, cushioning, brackets, spacers, bushings and hardware as
they will be needed to install the replacement evaporator.
Evaporator Installation
NOTE: DENSO strongly recommends the replacement of the receiver drier or accumulator
when the A/C system has been opened and exposed to atmospheric conditions during the
repair process.
1. Install the evaporator into the vehicle.
2. Remove and discard any caps covering the evaporator inlet and outlet openings.
3. Using the proper refrigerant oil, lubricate and install new O-rings onto the tubes/
hoses. O-rings are different, depending on refrigerant. Do not mix types. Refer to the
manufacturer's source manual for proper refrigerant oil
4. Reinstall refrigerant lines as follows:
a. Assemble the refrigerant lines to the evaporator, then install the bolts securing the
lines to the evaporator, or hand tighten the tube fittings.
b. Tighten the bolts to specifications or tighten the fittings to specifications. Use two
wrenches to prevent damaging the lines.
c. After completely finishing the installation, reinstall all parts that were temporarily
removed.
d. Proceed with evacuation and recharging steps.
NOTE: To verify there are no leaks and to eliminate moisture from the system, evacuate the
system for a minimum of 30 minutes. Wait 5 minutes after evacuation, then check for leaks
before charging the system to factory specifications.
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