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Instruction Manual

Appendix BX Rev. 1.2

January 1997

B-8 Appendices Rosemount Analytical Inc. A Division of Emerson Process Management

World Class 3000

MAINTENANCE AND SERVICE

Consult Safety Data Sheet 1M03243

before performing any work on the

CENELEC approved HPS 3000.

Install all protective equipment covers

and safety ground leads after equip-

ment repair or service. Failure to in-

stall covers and ground leads could

result in serious injury or death.

B-7 OVERVIEW

This section describes service and routine

maintenance of the HPS 3000 Heater Power

Supply Field Module. Replacement parts re-

ferred to are available from Rosemount. Refer

to Replacement Parts of this appendix for part

numbers and ordering information.

B-8 FUSE REPLACEMENT

The heater power supply's motherboard (25,

Figure B-6) contains four identical 5 amp fuses

(24) (5 amp anti-surge, Type T to IEC127,

ROSEMOUNT Part No. IL01293H02). To check

or replace a fuse, simply unscrew the fuse

holder cap (23) with a flat head screwdriver and

remove fuse. After checking or replacing a fuse,

reinstall fuse holder cap.

B-9 TRANSFORMER REPLACEMENT

Consult Safety Data Sheet 1M03243

before performing any work on the

CENELEC approved HPS 3000.

a. Follow the power down procedure outlined

in safety data sheet 1M03243 and the offi-

cial "Codes of Practice" for your country of

installation.

b. Loosen setscrew (13, Figure B-6) retaining

HPS cover (14). Remove HPS cover.

c. Remove hex nut (2), flat washer (3), and

hex head bolt (4) that retain transformer to

mounting bracket.

d. Disconnect the 6-pin transformer wiring

harness connector from J7 on the HPS

motherboard (25). Disconnect the 2-pin

wiring harness connector from the jumper

that was selected to configure the HPS for

the proper voltage.

NOTE

The transformer connector is keyed

making connection possible in only

one direction.

e. Remove old toroidal transformer (11). Place

new transformer in position and reconnect

wiring harness connectors as noted in

step d.

f. Place insulating disc (10) (one on either

side of transformer) and metal disc (12) on

transformer.

g. Tighten hex nut (2) and hex head bolt (4)

only enough to firmly hold transformer in

place.

h. Reinstall HPS cover (14) and secure with

setscrew (13).

B-10 MOTHERBOARD REPLACEMENT.

Consult Safety Data Sheet 1M03243

before performing any work on the

CENELEC approved HPS 3000.

a. Follow the power down procedure outlined

in safety data sheet 1M03243 and the offi-

cial "Codes of Practice" for your country of

installation.

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