Preamplifier; Temperature Control; Decoder; Fuse Replacement - Emerson Daniel Danalyzer 1000 Hardware Reference Manual

MODEL 1000
5.5.1

Preamplifier

The preamplifier has no parts that may be serviced in the field. If the unit fails, return it to Daniel
Measurement Services (DMS), a division of Emerson Process Management, for repair or
replacement.
5.5.2

Temperature Control

The temperature control circuitry is not field serviceable. If the board fails, return the board to
Daniel Measurement Services (DMS), a division of Emerson Process Management, for repair or
replacement. If a replacement temperature board is installed, temperature set points must be
re-calibrated. See paragraph 5.5.7.
5.5.3

Decoder

5.5.3.1

Fuse Replacement

The Decoder Board is protected by a 3A, 120VAC Picofuse, which is installed in-line on the neutral,
A-C connection to the board. The fuse is located above the power strip in the lower right corner of
the Decoder Board and is replaced by unsoldering the bad fuse from the printed circuit board (PCB)
and installing a new fuse. Use a low power soldering iron.
5.5.3.2

Instructions for Removing the Decoder Board

SERIOUS PERSONAL INJURY OR DEATH POSSIBLE
The upper purged enclosure should not be opened when the unit is exposed to an
explosive environment. If access to the upper purged enclosure is required, precautions
must be taken to ensure that an explosive environment is not present.
Failure to observe all safety precautions could result in serious injury or death.
MAINTENANCE
SEP 2005
5-11