Viper 8000 Ac Machine User Manual
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- SERVICE MANUAL FOR 6700, 7000, 8000 & 9000 SERIES AIR CONDITIONERS. Air conditioning. The user of this manual should have already accomplished a thorough study of refrigeration. If the air conditioner is equipped with a wall thermostat, please refer to the appropriate manual. Problem Possible Causes Ref.
INSTRUCTIONS MANUAL
VACUUM PHASE
1. Upon completion of the RECOVERY phase it is possible to start the vacuum phase by
opening the high- and low-pressure valves, pressing the SEL key until the LED
corresponding to “EVACUATE” lights, and then pressing GO. The vacuum time can be
set as follows. Press SEL until the “EVACUATE” LED lights, then press ENTER; at this
point the first digit on the left of the displaywill begin to flash. Press the INCREASE key
until the desired digit appears. Likewise, press the ARROW and INCREASE keys to
change the other digits. When setting is complete, press the ENTER key to confirm the
vacuum time value.
2. During the vacuum phase, the display will clock its duration. Leave the machine
running until the displayreads 0000 and the pump stops automatically.
3. Close all the valves and read the vacuum value on pressure gauges (A1) and (A2).
Wait for about 2 minutes, and then check that the pressure has not increased during
the interval. An increase in pressure signals leaks in the A/C system. Locate and
eliminate the leaks; repeat the vacuum phase.
WARNING: Avoid breathing A/C refrigerant and lubricant vapor mist. Exposure may
irritate eyes, nose, and throat. To remove HFC-134a from the A/C system, use service
equipment certified to meet the requirements of SAE J2210 (HFC-134a recycling
equipment). Additional health and safety information may be obtained from additional
refrigerant and lubricant manufacturers.
NEW OIL INJECTION
You can inject virgin lubricating oil into the vehicle A/C system at this time. Make certain that
the Oil Charge Bottle has sufficient quantity of oil. Cautiously open the Oil Charge valve until
the same amount of oil that was recovered in the RECOVERY AND RECYCLING operation is
removed from the container and replaced back into the vehicle's A/C system. The oil will be
drawn into the vehicle A/C system by the deep vacuum that was obtained while evacuating.
The subsequent charging of refrigerant will ensure all of the oil will be charged from the lines
and hoses.
Viper 8000 Ac Machine Manual
RECHARGE AN A/C SYSTEM
Viper Recovery Machine User Manual
WARNING: Always wear safety goggles and hand protection when working with
refrigerants. Failure to follow these procedures may result in serious injury. Due to the
extreme cold temperatures associated with the use of refrigerants, any contact with the
eye can cause blindness and contact with the bare skin can cause burns or frostbite.
CAUTION: When charging a vehicle do not lean on the machine as this may affect the
scale readings. Inaccurate weight measurements may result. The vehicle system can
be damaged if weights are not measured accurately.
During this phase, the correct refrigerant charge is returned to the vehicle’s A/C system.
1. Press the SEL keyuntil the “RECHARGE” LED lights.
2. Proceed as described below to set the quantity of refrigerant fluid to be charged. Press
the ENTER key. The first digit on the left of the display will begin to flash. Press the
INCREASE keyuntil the desired value appears. (Digits read in pounds and ounces, or
kilograms.) Likewise, press the ARROW and INCREASE keys to change the values of
the other digits. Press ENTER when setting is completed to confirm the values. The
quantity of fluid required for filling the system is usually reported on a data plate in the
engine compartment of the vehicle. If the quantity is not known, consult the relevant
system operating and maintenance manuals.
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