Replace Rtd - Graco Reactor 2 Repair Parts

Repair

Replace RTD

RTD
Replace Replace RTD
1. Perform Shutdown, page
2. Wait for heater to cool.
3. Remove heater covers.
4. Cut cable ties around the woven wrap with
the RTD cable (512).
5. Disconnect RTD cable (512) from TCM (453).
6. Loosen ferrule nut (N). Remove RTD (512)
from heater housing (501), then remove
RTD housing (H). Do not remove the adapter
(206) unless necessary. If adapter must be
removed, ensure that mixer (510) is out of
the way when replacing the adapter.
7. Remove RTD cable (512) from woven wrap.
Figure 7
64
50.
8. Replace RTD cable (512).
a. Apply PTFE tape and thread sealant
to male pipe threads and tighten RTD
housing (H) into adapter (506).
b. Push in RTD (512) so tip contacts heater
element (508).
c. Holding RTD (512) against heater
element, tighten ferrule nut (N) 3/4 turn
past finger-tight.
9. Route wires (S) as before through woven
wrap and reconnect RTD cable (512) to the
TCM.
10. Replace heater covers.
11. Follow startup instructions in the operation
manual. Turn on A and B heat simultaneously
to test. Temperatures should rise at same
rate. If one is low, loosen ferrule nut (N)
and tighten RTD housing (H) to ensure RTD
tip contacts the heater element (212) when
ferrule nut (N) is retightened.
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