Flowserve TRS5-7 Temperature Switch - Manual (Page 13)

13
Commissioning
– continued –
TRS 5-7 b, TRS 5-7 c/d
1. When switching on the mains voltage the green LED should be permanently
illuminated. Fig. 3
2. Raise temperature in heat generator until the max. permissible temperature limit is
exceeded. The two red LEDs on the temperature switch must light up.
3. After lowering the temperature the two red LEDs must extinguish.
4. An alarm “limit temperature exceeded” can be simulated by pushing the button
TEST
1 . On pushing the button the two red LEDs must light up.
5. To check the function of the self-checking circuitry of the temperature switch
proceed as follows: Set switch
TEST
2/
INSPECTION
in the direction of the arrow.
After a maximum of two minutes the two red LEDs should signal alarm. The
button
TEST
1 must not be operated during this test nor must the adjusted limit
temperature be exceeded. After the sucessful testing return switch into its original
position. After the response delay the two red LEDs must extinguish.
Check functions
Annex
Fault finding list
Warning
The terminal strips of the TRS 5-7 b / TRS 5-7 c/d are live during
operation. This presents the danger of electric shock. Cut off power
supply before fixing or removing the cover.
4
1
2
1
2
3
4
2
3
2
Fault: The temperature switch signals alarm during normal operation.
Remedy: Check whether the green LED is illuminated. If not, check power
supply.
Remedy: Check whether thermocouple supply cable is damaged.
Remedy: Check whether measured values emitted by thermocouple are correct.
Fault: The testing with push button
TEST
2 /
INSPECTION
was not successful,
i. e. only one or neither of the red LEDs lit up within two minutes.
Remedy: Replace temperature switch.
If faults occur that are not listed above please contact our subsidiary or
agency in your country.