Mastercool R134a Digital Manifold - Manual (Page 2)

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the battery to the battery snaps.
PRESSURE ADJUSTMENT FOR ELEVATION
For an accurate reading, it is important to adjust the manifold for elevation.
Follow these steps to set the unit for local elevation and barometric readings.
1. Press the
POWER button to turn the unit ON.
2. Allow 10-15 seconds for warm-up and readings to stabilize. (You will see all
characters and units countdown 9999,8888,7777... ) Once the warm-
up is complete, only pressure and temperature readings will appear.
3. Since the manifold reads gauge pressure it must be set for local elevation
and barometric readings. Press and hold the
UNIT button and then the ENTER
button simultaneously for 6-8 seconds and release. Pressure readings will
now be truly zero.
NOTE: In some cases pressure readings may not be zero with the manifold
disconnected from the pressure or vacuum source. Press and hold the UNIT
button and then the ENTER button simultaneously for 6-8 seconds and
release. Pressure readings will now be zero.
WARNING! If the manifold is connected to a pressure or vacuum
source and displays actual readings, do not attempt to zero out
the reading by pressing the enter button. This can offset the
reading.
BASIC SET-UP
The following settings are pre-programmed into the unit.
• Pressure: PSI / IN-Hg
• Temperature: °F
To change these settings please follow the procedure below:
• Press the
POWER button to turn the unit ON. Allow 10-15 seconds for warm-up
and readings to stabilize. (You will see all characters and units countdown
9999,8888,7777... ) Once the warm-up is complete, pressure and
temperature readings will appear.
• Press the
UNITS button to select the desired pressure/temperature. Scroll
through PSI, Kg/cm 2 , Bar, Mpa in ˚F. Continue to scroll for pressures to display
in ˚C
SETTING MANUFACTURER/MODEL/YEAR FOR REFRIGERANT & OIL CAPACITIES
• Press VEHICLE or VEHICLE button to scroll through each manufacturer.
VEHICLE to go in alphabetical order/VEHICLE in reverse alphabetic
order.
Manufacturers Include: Acura, Alfa Romeo, Aston Martin, Audi, BMW, Buick,
Cadillac, Chevrolet, Chrysler, Citroen, Daewoo, Daihatsu, Dodge, Eagle,Fiat,
Ford, Geo, GMC, Honda, Hummer, Hyundai, Infiniti, Isuzu, Jaguar, Jeep, Kia,
Lancia, Land Rover, Lexus, Lincoln, Mazda, Mercury, Mini, Mitsubishi, Mercedes
Benz, Nissan, Oldsmobile, Opel-Vauxhall, Peugeot, Plymouth, Pontiac, Porsche,
Renault, Rover, Saab, Saturn, Scion, Seat, Skoda, Smart, Ssangyong, Subaru,
Suzuki, Toyota, Volkwagen, Volvo
• Press
ENTER once desired manufacturer is found.
• Press VEHICLE to scroll through each model/year. For faster scrolling, press
and hold VEHICLE or (If you pass the model/year you desire use the
button to go back.)
• Once you have found the desired model/year, you can change the units of
measure by pressing the
UNITS button. Scroll through your options of LBS/OZ,
LBS/ML, KG/OZ, KG/ML .
• Press
ENTER once desired model, year and measurement is found.
• Refrigerant & Oil Capacity measurements will display at the top of the LCD
screen.
• Press
ENTER again to begin pressure readings.
PRE-SERVICE INSTRUCTIONS
1. Close both valves on the manifold gauge set by turning the High and Low
knobs clockwise.
2. Attach the High and Low couplers to the male end of the Red and Blue hoses.
If using manual couplers, open the plunger by turning the knob counter-clock
wise prior to connection to the system. (fig. A)
4. Connect the Red hose to the High port and the Blue hose to the Low port on
the manifold gauge.
HOOK-UP FOR SYSTEM DIAGNOSIS
To properly diagnose the problem in the A/C system, first check the
system’s overall performance. This includes testing the system’s pressure and
refrigerant flow. The system pressure can be checked with the manifold gauge
set.