Tuttnauer 2540 EHS, Руководство техника

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107
Corrections
34.1
If a direct short is found in the SSR then replace it.
34.2
If an open is found then replace the SSR.
34.3.1
If terminal 3 does not read b3.5 and +5 VDC then check if the Power Supply is properly supplying these voltages.
34.3.2
If terminal 4 does not read the correct voltage then, unplug the unit and remove the wire on terminal 4. Turn the power back on and recheck terminal 4. If the reading is still not correct then replace the SSR. If the reading is correct then check continuity between the terminal 4 wire and the appropriate connector: (unplug the unit when taking this reading)
Possible cause check-up and tests
34.1
Unplug the unit & remove the Outer Cabinet Label then remove the four wires connected to the SSR. Using an ohmmeter, check for a short circuit between terminals 3 & 4 and 1& 2 and 3&1 and 4&2 and 3 & 2 and 4 & 1. Make sure there are no direct shorts.
34.2
Next, using an ohmmeter, check for an open between terminals 1 & 2, be sure to reverse the meter leads and check in the opposite direction. Repeat the procedure for terminals 3 & 4.
34.3
Plug the unit in & Turn the unit on Make sure the autoclave is sitting idle, no cycle is running. If necessary abort any cycle that may not have been completed. The heaters will automatically be on when the unit is turned on. Press the PROGRAM KEY to display the date and time, this will turn the heaters off. Take a DC voltage reading from terminal 3 on the SSR to ground. With the heaters in the OFF mode there should be a voltage reading b3.5 and +5 VDC. Repeat this procedure with terminal 4 and you should have the same reading. Reading b3.5 and +5 VDC indicates that the SSR is not turned on.
10. TROUBLESHOOTING
(cont.)
10.4
In Process Malfunction
(cont.)
Symptom
34.
Testing the Solid State Relay