Hazardous Area Oxymitter 4000 Repair - Emerson Rosemount Analytical Oxymitter 4000 Instruction Manual

Hazardous Area Oxymitter 4000
9-4 HAZARDOUS AREA OXYMITTER 4000
REPAIR
Each of the following procedures details how to
remove and replace a specific component of the
Hazardous Area Oxymitter 4000.
It is recommended that the Hazardous
Area Oxymitter 4000 be removed from
the stack for all service activities. The
unit should be allowed to cool and be
taken to a clean work area. Failure to
comply may cause severe burns.
Disconnect and lock out power before
working on any electrical components.
There is voltage up to 115 VAC.
a. Removal and Replacement of Hazardous
Area Oxymitter 4000 Probe
1. Remove.
(a) Turn off power to the system.
(b) Shut off the calibration gases at the
cylinders and the instrument air.
(c) Disconnect the calibration gas
and instrument air lines from the
Hazardous Area Oxymitter 4000.
(d) While facing the Hazardous Area
Oxymitter 4000 and looking at the
Rosemount label, remove screw
(18, Figure 9-3 or Figure 9-4),
cover lock (19), and captive
Rosemount Analytical Inc. A Division of Emerson Process Management
Instruction Manual
IB-106-340C Rev. 4.1
washer (20) securing cover (17) on
left side of housing (11). Remove
the cover to expose the terminal
block (15).
(e) Remove all signal and power
wiring to the probe.
(f) Remove insulation to access the
mounting bolts.
(g) Unbolt the Hazardous Area
Oxymitter 4000 from the stack and
take it to a clean work area.
(h) Allow the unit to cool to a comfort-
able working temperature.
2. Replace.
(a) Bolt the Hazardous Area Oxymitter
4000 to the stack and install the
insulation.
(b) Connect all signal and power leads
at the probe. Refer to Section 2,
INSTALLATION, for detailed wiring
instructions.
(c) Install left side cover (17, Figure
9-3 or Figure 9-4) and ensure it is
tight. Secure the cover using cap-
tive washer (20), cover lock (19),
and screw (18).
(d) Connect the calibration gas and
instrument air lines to probe.
(e) Turn on the calibration gases at the
cylinders and turn on instrument
air.
Maintenance and Service
July 2004
9
9-7