LCD Display
The Liquid Crystal Display (LCD) display provides
the unit operator with continual updates of the Model
830’s status. In addition, the display will prompt the
technician for the user input needed to continue
operation. The LCD shows error codes for rapid di-
agnosis of abnormal conditions.
The display is divided into five fields which aid the
technician in rapidly reading information.
1.
Weight -
Shows the weight of refrigerant being
processed in each mode.
2.
Time (MINS) -
Shows the time set for either
Flush or Vacuum. Timer will count down to dis-
play the time left.
3.
Purge -
A “Y” in this field indicates non-
condensable gases such as air are present in
the storage tank. The unit will purge automati-
cally next time the unit is turned on when the “Y”
is displayed. An “N” indicates non-condensable
gases are below the set limit. An “E” indicates
the unit purged for thirty (30) seconds and non-
condensable gases are still present. This is a
safety feature which prevents excess purging
when a malfunction occurs somewhere in the
system. See the Purging Non-Condensable Gas
section for further details.
4.
Mode -
Displays the Mode number of the current
operation.
5.
Status Line -
Displays programming commands
and informs the user of current status of the unit.
Mode Selection Keys
The Mode Selection Keys allow the technician to
select a specific operation. Six Mode keys are lo-
cated on the left side of the control panel. One key,
the Refrigerant Management System Key, is located
on the right side.
1.
MODE 1 -
Recover Only, is used to recover and
recycle refrigerant from an automobile A/C sys-
tem. This mode is most often used prior to
opening an A/C system to atmosphere to replace
a system component.
2.
MODE 2 -
Vacuum & Charge, is used to Vacuum
air from a system previously opened to the
atmosphere. This mode will then proceed to
recharge the A/C system. This mode also allows
the technician to verify the A/C system will hold a
vacuum for a certain length of time.
3.
MODE 3 -
Charge Only, adds refrigerant to an A/
C system and is most commonly used to “top off”
the system.
4.
MODE 4 -
Full Cycle, performs a complete recov-
ery, recycling, evacuating and charging of an
automobile A/C system.
5.
MODE 5 -
Oil Flush, removes oil and refrigerant
from an A/C system.
6.
MODE 6 -
Tank Refill, is used to add new refrig-
erant to the storage tank.
7.
MODE 7 -
Refrigerant Management System,
gives the technician access to information about
refrigerant use to date.
Function Keys
The Function Keys are used to enter data into the
system in a variety of modes.
FUNCTION A - INCREASE.
Press INCREASE to
raise values on the display for user-input informa-
tion. Holding the button depressed will increase the
rate of change.
FUNCTION B - DECREASE.
Press DECREASE to
lower values on the display for user-input informa-
tion. Holding the button depressed will increase the
rate of change.
FUNCTION C- WEIGHT CONVERSION.
Press
WEIGHT CONVERSION to change the displayed
units of weight. The choices are: pounds/ounces,
pounds, ounces, and kilograms.
ENTER-
Press ENTER to accept the value on the
LCD after using the INCREASE or DECREASE
keys.
Operation Keys
START-
Press START to begin a selected opera-
tional mode.
RESET-
Press RESET to cancel the current opera-
tion. The RESET may have to be pushed more than
once to return to “Select Mode” screen.
Control Panel Features
WEIGHT
TIME
(MIN)
PURGE
MODE
STATUS LINE
2LB 4OZ
15MIN
N
3
CHARGING
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