Tuttnauer 2540 EHS, Technician Manual

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74
Corrections
1.2.1
Clean or replace clogged steam trap.
1.2.2
Clean clogged pipe.
1.2.3
Close needle valve completely and open half a turn.
1.2.4
See item 10.4.31.
1.3
Calibrate temperature and/or pressure.
2.1.1.1
Replace clogged steam trap.
2.1.1.2
Close needle valve completely and open half a turn.
2.1.1.3
Clean clogged pipes.
2.1.14
See item 10.4.31.
2.2.1.1
Replace faulty relay.
2.2.1.1
Replace faulty board.
2.2.1.1
Replace faulty board.
Possible cause check-up and tests
1.2.
High pressure and low temperature Water is not discharged from the chamber. Possible cause: 1.2.1
Steam trap clogged.
1.2.2
Exhaust drain pipe clogged.
1.2.3
Steam trap by-pass (needle valve) is too closed.
1.2.4
Slow exhaust valve (74) does not open
1.3
Temperature and/or pressure are not calibrated.
2.1
Pressure is high and temperature is low. 2.1.1
Slow exhaust or drain lines are clogged due to: 2.1.1.1
Clogged steam trap.
2.1.1.2
Needle valve, of the slow exh by- pass, is closed.
2.1.1.3
Outlet or slow exh to drain pipes are clogged.
2.1.1.4
Slow exhaust valve (74) is stuck closed.
2.2
Pressure and temperature are high. 2.2.1
Heating elements operate constantly due to: 2.2.1.1
Faulty Solid State Relay (SSR) (located in the electronic box).
2.2.1.2
Faulty digital board DIG-T2 (located in the electronic box).
2.2.1.1
Faulty analogue board ANL-T2 (located in the electronic box).
10. TROUBLESHOOTING
(cont.)
10.2 Preliminary
Troubleshooting
(cont.)
Symptom
1.
“Low temp” is displayed (cont.)
2.
“High press” is displayed.