103
Corrections
29.1
Replace the DIG-T2 board.
29.2
Fix the connections.
29.3
Disassemble the valve and check that the
plunger is free to move and that the seat
is clean and free from debris.
29.4
Replace the ANL-T2 board.
Possible cause check-up and tests
The problem may be a mechanical failure of the
valve, the valve driver located on the ANL-T2
board or the control circuit on the
DIG-T2 board.
29.1
Check TP12. If the voltage is higher than
4V and the valve is open, then the DIG-
T2 board is faulty.
If the voltage at TP7 is <1VDC and the
valve is open, the problem is not the
DIG-T2, but some other element of the
system.
29.2
Check the connection between the
connector JP10 – 8 and the valve for a
ground short.
29.3
Remove the cover protecting the
terminals of the coil and check the
voltage across the coil when the solenoid
is connected. If the coil voltage is less
than 2V and the valve is open, there is a
mechanical problem.
29.4
If the voltage across the coil is higher
than 10VDC, then the ANL-T2 board is
faulty.
10. TROUBLESHOOTING
(cont.)
10.4
In Process Malfunction
(cont.)
Symptom
29.
Steam valve (93) is always
open.
Содержание 2540 EHS
Страница 10: ...9 REAR VIEW...
Страница 17: ...16 Layout diagram of the ANL T2 is provided below ANL T2 BOARD Top View Bottom View...
Страница 19: ...18 AC T1 BOARD Top View Bottom View...
Страница 30: ...29 6 4 Input Output Graph...
Страница 31: ...30...
Страница 32: ...31...
Страница 33: ...32...
Страница 34: ...33...
Страница 35: ...34...
Страница 66: ...65...
Страница 68: ...67...
Страница 120: ...119 VESSEL ASSEMBLY Model 2540 EHS Model 3870 EHS...
Страница 121: ...120 OUTER CABINET ASSEMBLY Model 2540 EHS Model 3870 EHS...
Страница 122: ...121 TRAY HOLDER For model 2540 TRH254 0009 For model 3870 TRH387 0001...
Страница 123: ...122 TRAY TRAY HANDLE CMT240 0001 MODEL SIZE CAT No 2540 TRY240 0001 Big TRY387 0001 3870 Small TRY387 0003...
Страница 126: ...125 PIPING DRAWING FOR 2540 EHS...
Страница 127: ...126 PIPING DRAWING FOR 3870 EHS...
Страница 128: ...127 ELECTRICAL DRAWING FOR 2540 EHS...
Страница 129: ...128 ELECTRICAL DRAWING FOR 3870 EHS TILL S N 2307039...
Страница 130: ...129 ELECTRICAL DRAWING FOR 3870 EHS AFTER S N 2307040...