Emerson Process Management 3000 - Manual (Page 161)

Instruction Manual
Appendix E Rev. 4.5
June 1999
Rosemount Analytical Inc. A Division of Emerson Process Management Appendices E-13
World Class 3000
8. Splice heater wire to new heater (21)
and attach new heater to heater
mounting plate (20).
9. Attach heater assembly (20, 21) to
mounting plate (15) using screws (11)
and washers (12).
10. Reconnect all cables removed in step
3.
11. Position mounting plate (15) onto en-
closure (23) and secure with the nec-
essary screws.
12. Reinstall protective cover (15) using
screws (2) and washers (3).
13. Close door cover (1) and secure with
screws (5, Figure E-7).
b. Thermoswitch Replacement
Disconnect and lock out power before
working on any electrical components.
There is voltage up to 240 Vac, and
could cause personal injury.
1. Turn off power to the system.
2. Open cover door (1, Figure E-8) of the
IFT by removing screws (5, Figure
E-7).
3. Remove protective cover (4) by re-
moving screws (2) and washers (3).
4. Disconnect cable (1, Figure E-6) from
microprocessor board (11, Figure E-6).
5. Partially remove mounting plate as-
sembly (15) from enclosure (23) by
removing necessary screws.
6. Remove screws (13) and washers (14),
and remove thermoswitch mounting
plate (18) from mounting plate (15).
7. Pull wires free of thermoswitch tabs.
8. Remove old thermoswitch (19) from
thermoswitch mounting plate (18) by
removing screws (16) and washers
(17).
9. Install new thermoswitch (19) to ther-
moswitch mounting plate (18) using
screws (16) and washers (17).
10. Connect wires to thermoswitch tabs.
11. Attach thermoswitch assembly (18, 19)
to mounting plate (15) using screws
(13) and washers (14).
12. Reconnect cable removed in step 4.
13. Position mounting plate (15) onto en-
closure (23) and secure with the nec-
essary screws.
14. Reinstall protective cover (4) using
screws (2) and washers (3).
15. Close door cover (1) and secure with
screws (5, Figure E-7).
c. Fan Replacement
Disconnect and lock out power before
working on any electrical components.
There is voltage up to 240 Vac, and
could cause personal injury.
1. Turn off power to the system.
2. Open cover door (1, Figure E-8) of the
IFT by removing screws (5, Figure
E-7).
3. Remove protective cover (4) by re-
moving screws (2) and washers (3).
4. Remove fan mounting bracket (7) from
mounting plate (15) by removing
screws (5) and washers (6).
5. Remove fan (10) from fan mounting
plate (7) by removing screws (9) and
washers (8).
E