Emerson B-106-300NH instruction manual Power Supply Board Replacement

Instruction Manual

Appendix E Rev. 4.5 June 1999

World Class 3000

l.Reinstall mounting plate (10) to enclosure

(6)with the necessary screws and washers.

m.If removed, replace thermoswitch assembly (18, 19, Figure E-8)and secure with screws

(13)and washers (14).

n.Reinstall the wires to the terminal strip on interconnect board (12) as was noted in step e.

o.Connect cable (1) to the receptacle on mi- croprocessor board (11). Reconnect GUI assembly cable to receptacles on micro- processor board if IFT is equipped with GUI.

p.Replace protective cover (13) and secure with washers (15) and screws (14).

q.Close cover door (16) and secure with screws (17).

E-8 POWER SUPPLY BOARD REPLACEMENT

Disconnect and lock out power before working on any electrical components. There is voltage up to 240 Vac, and could cause personal injury.

a.Turn off power to the system.

b.Open cover door (16) of the IFT by remov- ing screws (17).

c.Remove protective cover (13) by removing screws (14) and washers (15).

g.Remove mounting plate (10) by removing the necessary screws.

h.If unit is equipped with heater option, dis- connect plug from J2 on power supply board (4, Figure E-6)by squeezing tabs in and pulling connector up.

i.If unit is equipped with heater option, re- move fan assembly (7, 10, Figure E-8)by removing screws (5) and washers (6).

j.Disconnect the transformer cable plugs from the receptacles on power supply board (4, Figure E-6).

k.Carefully tagging wires, remove the wires from terminal strips J5 and J6 on power supply board (4, Figure E-6).

l.Remove power supply board (4) from en- closure (6) by removing screws (2) and washers (3).

m.Attach new power supply board (4) to en- closure (6) with screws (2) and washers (3).

n.Reconnect the wires as noted in step e.

o.Connect the transformer cable plugs from transformer (9) to the receptacles on power supply board (4).

p.If removed, install fan assembly (7, 10, Figure E-8)and secure with screws (5) and washers (6).

d.Disconnect cable (1) from the receptacle on microprocessor board (11). Disconnect GUI assembly cable from receptacles on micro- processor board if IFT is equipped with GUI.

e.Carefully tagging wires, remove the wires from terminal strip on interconnect board (12).

f.If unit is equipped with heater option, re- move thermoswitch assembly (18, 19, Figure E-8)by removing screws (13) and washers (14).

q.If disconnected, reconnect plug to J2 on power supply board (4, Figure E-6).

r.If removed, replace thermoswitch assembly (18, 19, Figure E-8)and secure with screws

(13)and washers (14).

s.Reinstall mounting plate (10) to enclosure

(6)using the necessary screws.

t.Reconnect the wires to interconnect board

(12)as noted in step e.

E-10 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management