Honeywell ACM 150 Manual To Installation, Operation, And Maintenance page 19

ACM 150
Main power switch
This switch controls the line power. The ACM 150 monitor can not operate unless it
is switched ON. Switching it OFF disconnects line power to all ACM 150 assemblies.
This is also a Lockout/Tagout (LOTO) switch. It accepts an external padlock in the
OFF position.
Figure 4. Main power switch
Sample valve manifolds
Located at the top of the cabinet, these manifolds are aluminum and then Teflon
impregnated and hard-anodized to provide an inert surface.
Each manifold holds 10 valves. These are 3-way solenoid valves operated by 24
VDC. One way flows to a bypass header and the other to a sampling header that
connects to the cycle valves and the FTIR gas cell. The valves mount upside down.
They are secured by screws and o-rings seal them to to the manifold.
Figure 5. 10 Sample valve manifold
One to four manifolds are installed, providing 10, 20, 30 or 40 sample point inlet
fittings. Blank plates seal off unused manifolds. Handles are provided for installation
and removal of the manifold assemblies. Shown below are the sample tube fittings
on the manifolds.
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