Mastercool 90413 4-way Valve Digital Manifold - Manual (Page 3)

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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
KEYPAD FUNCTIONS
POWER
Turns the unit on and off
SELECT
Press this key to scroll through and access
Refrigerant Menu, Pressure Unit, Temperature
Unit, Auto-Off, Vacuum Unit
VACUUM
Press this key to display vacuum units when
vacuum sensor cable is attached
ENTER
• Press this key to confirm a selection
• Press this key for 8-10 seconds to configure a
truly zero pressure reading
(when there is no pressure in the system)
B/LT.
REC.
• Press this key to illuminate the display in
darker areas
• Press this key for 5 seconds to start and stop
the record data mode
ENTER
+
B/LT.
REC.
• Press these keys simultaneously for 3 seconds
to check the status of the recording
ENTER
+
B/LT.
REC.
+
POWER
• Simultaneously press the enter and b/lt/rec.
and then press power to delete the recorded
data from the manifold (record mode must
be off)
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].
REFRIGERANT MENU
• 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.
PRESSURE UNIT
• Next the PRESSURE UNIT will display.
Press the SELECT button to change the pressure unit. Press ENTER to confirm.
TEMPERATURE UNIT
• Next the TEMPERATURE UNIT will display.
Press the SELECT button to either °F or °C. Press ENTER to confirm.
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