Mastercool 99773-AR HVAC Digital Manifold - Manual (Page 2)

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unit is turned on.
• Do not set manifold on top of an A/C system. This will result in incorrect
temperature probe readings.
• The display will show zero (0) whenever the measurement falls below the
following readings: 3 PSI, 0.2 Kg/cm, 0.2 BAR, 0.02 mPA or 6 in-Hg
• The digital manifold is normally shipped with vacuum and temperature sensors
that are calibrated with the companion manifold. In the event the other sensors are
provided by another source, please contact Mastercool Inc. for calibration
instructions.
BATTERY CARE & INSTALLATION
When the battery is connected to the unit but not in use it will last six months.
NOTE: In order to prolong the life of the 9V battery;
a.) keep auto-off function enabled
b.) if pressure, temperature or deep vacuum is being used for an extended period of
time turn the unit off and turn back on again when reading is required. (Allow
30-45 seconds for the correct reading to appear.)
BATTERY INSTALLATION
Remove the battery compartment cover.
Make sure to place the battery into the
compartment with the correct polarity.
Replace battery cover.
BATTERY COMPARTMENT
PRESSURE ADJUSTMENT FOR ELEVATION
For an accurate reading, it is important to adjust the manifold for elevation and
barometric pressure. 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 unit to initialize. (You will see all characters and units
countdown 99999,88888,77777... ) Once initialization is complete, only
pressure and temperature readings will appear.
NOTE: Certain refrigerants do not have a temperature display at a given pressure.
In order to achieve an accurate pressure and temperature reading it is recommended to
press and hold the ENTER button for 8 - 10 seconds and then release. Pressure readings
will now be truly zero. Due to environmental factors such as elevation, temperature and
humidity, you should complete this process each time you turn the unit on to read pressure
or vacuum. DO NOT ATTEMPT TO ZERO UNIT OUT WHILE UNDER PRESSURE.
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.
SETTING REFRIGERANT, PRESSURE, TEMPERATURE AND AUTO-OFF
• Press the POWER button to turn the unit ON. Wait for the unit to initialize [a refrigerant,
pressure, temperature or vacuum will be displayed when the unit is ready].
• Press the
SELECT button to access the REFRIGERANT MENU.
Press SELECT again to display refrigerant type.
[To scroll through the refrigerants press the select/ ↑or vacuum/↓ button: R11, R12, R13,
R21, R22, R23, R32, R113, R114, R115, R116, R123, R124, R125, R134, R134a, R141B,
R142B, R143, R143A, R152A, R176, R218, R290, R401A, R401B, R401C, R402A, R402B,
R403A, R403B, R404A, R405A, R406A, R407A, R407B, R407C, R407D, R408A, R409A,
R410A, R410B, R411A, R411B, R412A, R413A, R414A, R414B, R417A (ISCEON MO59),
R422A (ISCEON MO79), R422D (ISCEON MO29), R427A (FX100), R501, R502, R503, R504,
R507A, R508B, R509A, R600, R600A, R601, R601A]
Press
ENTER to confirm the desired refrigerant.
• Next the PRESSURE UNIT will display.
Press the
SELECT button to change the pressure unit. Press ENTER to confirm.
• Next the TEMPERATURE UNIT will display.
Press the
SELECT button to either °F or °C. Press ENTER to confirm.
• Next AUTO-OFF will display.
Press the
SELECT button to disable Auto-Off [auto-off will clear from the display.]
If the auto-off feature is displayed the manifold will shut down after 15 minutes. Press
the
ON/OFF button to turn the unit back on and allow 15-20 seconds to initialize.
NOTE: It is recommended to keep the auto-off feature enabled to save the life of
the battery.
SETTING VACUUM
• Connect the vacuum sensor cable to the manifold and turn the unit on.
• Press the
VACUUM button. This will phase out the temperature display and only show the
vacuum units.
Press the
SELECT button until the desired vacuum unit is displayed.
Press ENTER to confirm.
• The vacuum display will automatically go off after 15 minutes. Press the ON/OFF button
and VACUUM button to turn the unit on. Allow 30-45 seconds for the sensor to warm up