ISC Tronic Service Manual
Rev. 0128/01
TRONIC
SERVICE MANUAL
SYSTEMS
1
CONTENTS
1.0) CALIBRATION AND TEST MENU
1.1) CALIBRATION MENU ACCESSING PROCEDURE
1.2) REFRIGERANT SCALE CALIBRATION
1.3) MAINTENANCE METER CALIBRATION (RESET)
1.4) COMPONENTS AND FUNCTIONS TEST MENU
1.5) OPERATION PARAMETERS SETTING MENU
1.6) TABLE OF COMPONENT CODES
2.0) LIST OF COMPONENTS VIEW
2.1) GENERAL OVERVIEW
2.2) CONTROL PANEL VIEW
2.3) REAR VIEW
2.4) REFRIGERANT CONTAINER SAFETY VALVES
2.5) FRONT PART, INSIDE VIEW
2.6) UPPER PART, INSIDE VIEW
2.7) POWER BOARD VIEW
2.8) LOGIC BOARD VIEW
2.9) FLOW DIAGRAM
2.10) ELECTRICAL DIAGRAM
2.11) TABLE OF CONNECTIONS
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1.0) CALIBRATION AND TEST MENU
1.1) CALIBRATION MENU ACCESSING PROCEDURE
WARNING: PERFORM THIS PROCEDURE ONLY AFTER HAVING READ THE
FOLLOWING INSTRUCTIONS CAREFULLY. IF NOT PERFORMED PROPERLY, THIS
PROCEDURE CAN CAUSE MALFUNCTIONING AND DAMAGE THE UNIT.
Supply power to the unit.
With the display showing the net weight available (Stand-by mode), proceed as descri be d
below:
Press the UP Key and keep it pressed.
Press the S Key and keep it pressed.
Release the UP Key.
Press the DOWN Key and keep it pressed.
Release the S Key.
Release the DOWN Key.
The display shows 0000.
Use the UP-DOWN keys to access the following menus:
0001 Refrigerant scale calibration.
0005 Maintenance meter calibration (reset).
0015 Components and fu nctions test menu.
0050 Printer enabling.
0567 Operation parameter setting menu.
Set the desired menu.
Use the S key to confirm.
See the chapters on the individual menus.
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1.2) REFRIGERANT SCALE CALIBR ATIO N
Required equipment:
1 Phillips screwdriver, PH 2.
1 Hexagonal spanner no.13.
1 Sample weight, 5 Kg.
2 Sample weights, 2 Kg.
1 Sample weight, 1 Kg.
Or, alternatively:
1 Sample weight, min. 10 Kg.
1 Known weight, 9 Kg.
After removing the front panel, remove the M8 screw that fastens the container (34) to the
scale plate (18). Remove the container (34).
Note: it is not necessary to disconnect the hoses from the internal container (34).
Set menu 0001 (see Chap.1.1), confirm with the S Key.
The display shows P- - - 0.
With the scale plate (18) completely empty, press the S Key.
The display shows P- - - F.
Position the 10-Kg sample weight (or weights) on the scale plate (18).
Confirm with the S Key.
The display shows the theoretical weight read by the scale.
Use the UP-DOWN Keys to set the sample weight value.
Confirm with the S Key.
Remove the 10-Kg sample weight.
The display shows P- - - t.
Position 9-Kg sample weight (or weights) on the scale plate (18).
Confirm with the S Key.
The display shows –End–.
Press the S Key to exit. The display shows the Stand-by mode.
End of procedure.
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1.3) MAINTENANCE METER CALIBRATIO N ( RE S ET)
Set menu 0005 (see Chap.1.1), confirm with the S Key.
The display shows cont.
Press the S Key.
The display shows the work time (maximum time of 3600).
Press the S Key and keep it pressed.
The display shows cont – rESEt alternately.
When the display shows 0000, release the S Key.
The display shows –End–.
Press the S Key to exit. The display shows the Stand-by mode.
End of procedure.
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1.4) COMPONENTS AND FUNCTIONS TEST MENU
This procedure can be used to check the operation of the unit’s component s.
Set menu 0015 (see Chap.1.1), confirm with the S Key.
The display shows tESt 1.
When the F Key is pressed repeatedly, the following tests can be selected sequentially:
Test 1 All display segments check.
Test 2 All leds check.
Test 4 Out C and keys check.
Test 5 Refrigerant scale net weight visualization.
Test 6 Pressure transducer visualization (mV).
Test 7 Not used
Test 8 Not used
Test 9 Printer test. (If installed)
–End– Exit.
Use the F Key to select the desired menu.
Confirm with the S Key.
Use the S Key to exit from the individual tests.
With the display showing –End–, press the S Key to exit. The display shows the Stand-by
mode.
End of procedure.
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1.5) OPERATION PARAMETER SETTING MENU
WARNING: PERFORM THIS PROCEDURE ONLY AFTER HAVING READ THE
FOLLOWING INSTRUCTIONS CAREFULLY. IF NOT PERFORMED PROPERLY, THIS
PROCEDURE CAN CAUSE MALFUNCTIONING AND DAMAGE THE UNIT.
Set menu 0567 (see chap. 1.1),confirm with the S Key.
Press the F key repeatedly to select the following operation parameters in sequence:
CODE
VALUE
P-t02
60
P-t03
180
P-t04
60
P-t05
45
P-t06
04
P-t07
05
P-t08
02
P-t09
60
P-t10
00
P-t11
09
P-t12
60
P-t13
05
P-t14
240
P-t15
05
P-udL
0.700
P-udH
1.400
P-ud1
0.120
P--Fd
1.000
rES
P--Lb
10.000
t--AL
3600
When the display shows u---F, the pressure transducer can be calibrated.
Disconnect the quick connectors from the high and low pressure hoses.
Open the LP-HP valves on the control panel to connect the pressure transducer to the
atmospheric pressure.
With the display showing u---F, confirm with the S key.
The display shows the theorical weight measured.
Digit the value 0.960. Confirm with the S key.
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