a. Turn screw (1, Figure 2-61, sheet 1) 1/4 turn clockwise and open door.
Electrical power must be removed from ROWPU or electrical shock can result in
injury or death.
b. Shut off all electrical power to ROWPU control panel (AC and DC).
c. Tag and disconnect power supply leads (18, Figure 2-61, sheet 2) from terminal board (1 9).
d. Remove cable connectors (20) by removing connector nuts (21) and gaskets (22). Cables are
e. Remove CO monitor by removing four capscrews (23), Iockwashers (24) and washers (25).
The sensor is a sealed unit which contains an electrolyte. If the sensor leaks, take
care that the electrolyte does not contact skin, eyes or clothing. In case of contact with
eyes, immediately flush eyes with plenty of water for at least 15 minutes and seek
To avoid shorting circuit board, do not allow electrolyte to contact it.
a. Refer to Figure 2-61, sheet 2 and loosen lock ring (26).
Figure 2-61. Carbon Monoxide Monitor (sheet 3 of 3)