11
MODEL 5700
1. Remove the two knurled thumb screws at bottom.
2. Pull the bottom plate off of the housing as far as the wiring will allow.
3. Remove detector cell from its cavity in the flow block on top of bottom plate.
4. Pull wire connectors off the pins on the sensor, noting the color coding.
5. Discard old detector cell, keeping in mind that it contains a small amount of
sulfuric acid.
WARNING: SULFURIC ACID IS POISONOUS AND CAN CAUSE SEVERE BURNS, DO
NOT ALLOW ACID TO CONTACT SKIN OR EYES. IF EYES ARE EXPOSED TO ACID,
FLUSH THOROUGHLY AND SEEK IMMEDIATE MEDICAL ATTENTION. ALWAYS
WASH HANDS THOROUGHLY AFTER HANDLING DETECTOR CELL.
Attach wires to new detector as listed below. If new detector was received with a
shorting wire between the Sensing and Reference terminals, remove and discard
the wire.
Wire Color Detector Terminal
Black CNTR
Blue REF
Red SENSING
6. Put a small amount of Vaseline or similar lubricant on the 0-ring seal within the
block. Then push the cell into the block until it seats on the ledge half way down.
7. Replace bottom plate and secure it with thumb screws.
8. Allow at least one hour for stabilization, then calibrate as in CALIBRATION
AND ADJUSTMENT, IV.-A and B.
C. MAIN CIRCUIT BOARD
The principal electronic components are all installed on a printed circuit board which is
secured to the front panel by three screws. The board can be removed by taking out the
front panel screws and removing the panel, then taking out three screws holding the
circuit board to the panel. The wires can then be unplugged from their sockets along the
edge of the board. The board can then be sent to MST, Inc. for repair or exchange.
To Next Page
Loading...