Clemco CMS-2, Инструкция по эксплуатации

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CMS-2 CARBON MONOXIDE MONITOR Page 12
© 2018 CLEMCO INDUSTRIES CORP.

www.clemcoindustries.com

Manual No. 22925, Rev. I, 04/18
6.0 SERVICE MAINTENANCE
NOTE: Do not attempt to repair the instrument or
replace any item that is not noted in this section or
that requires parts not listed in Section 8.2. Contact
a Clemco distributor for authorization to return the
instrument for evaluation or service.
6.1 Sensor Replacement
6.1.1
Sensor life depends upon several factors, but in
most cases the sensor should last two to three years.
6.1.2
The following materials are required before
replacing the sensor:

10 ppm test gas ............................... Stock No. 22865

Calibration connector ....................... Stock No. 22893

Sensor .............................................. Stock No. 22919

Standard screwdriver
6.1.3
Open the instrument case to access the interior
faceplate. Take care not to introduce contaminants into
the instrument when the case is open.
6.1.4
Loosen the closing screw located in the center
of the lower edge of the faceplate.
6.1.5
Using the top hinge as the pivot, swing the
faceplate up to expose the instrumentation.
6.1.6
Locate the clear-plastic sensor housing, shown
in Figure 11, and while supporting the circuit board,
loosen the two mounting screws.
Figure 11
6.1.7
Carefully pull straight up to lift the sensor
housing off the circuit board. The sensor may come off
with the housing or stay plugged into the board.
6.1.8
If the sensor remains on the circuit board, note
the location of the small tab, as the new sensor must be
installed in the same orientation. While supporting the
circuit board, carefully pull straight up to remove the
sensor.
6.1.9
If the sensor comes off with the housing, note
the tab location and remove the sensor by pulling on a
couple of the sensor pins.
6.1.10
Discard the old sensor to avoid attempts to
reuse.
6.1.11
Handle the new sensor taking care not to distort
the pins. Rotate the sensor so the tab is in the same
position as was the old one (as shown in Figure 11) and
plug the pins into the socket. Some pin alignment may
be required, and is normal. Push firmly but carefully to
seat the sensor. The sensor will stand off the circuit
board by approximately 1/4" when seated.
6.1.12
Place the sensor housing over the sensor, align
the mounting screw holes, and while supporting the
circuit board, tighten the screws snugly but
Do not
overtighten as it could damage the board.
6.1.13
When closing the faceplate, make sure that all
internal air lines are free of interference, binding or
kinks, and that all tube connections are secure. Tighten
the closing screw.
6.1.14
Close the instrument case and apply sample air
and power per section 3.0, and allow the monitor to run
in operating mode for at least one hour.
6.1.15
Calibrate the monitor per Section 4.0.
6.1.16
Return the monitor to service and record sensor
replacement date.
6.1.17
Follow the calibration testing schedule per
Section 5.3.
6.2 Fuse
Replacement
6.2.1
The fuse cap is located on the side of the
instrument case. To access the fuse, push the cap in
and rotate counterclockwise.
Sensor Housing
Sensor
Note tab
position.
Mounting
Screws