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

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ACM 150
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Prepare for test and setup
Disconnect a few sample tubes at inlet fitting, e.g. points 1 thru 4. Make sure that
you have CDA supplied to the ACM 150 monitor and that you have installed check
valves at all of the sample point inlets.
Line leak test mode
From the Hardware Servicing menu, Figure 69 , select ‘Perform an Entire Line Leak
Test’. Do the initial setup or check the setup while in this test mode. If the test mode
runs to completion before you are done, start it over.
Adjust air regulator
Locate the air regulator on the CDA Panel ( Figure 20 ). On the initial setup, adjust the
air regulator to read 15 psig on its gauge as soon as the Line Leak Test starts (make
sure the needle valve is not closed - open it one or two turns, if necessary). Once set
up, the air regulator should not require adjustment.
Adjust needle valve
On the initial setup, close the needle valve all the way by turning clockwise. The
pressure gauge between the needle valve and S10 should drop to 0. Now, open the
needle valve about 1/8 turn or until the pressure reads about 2 or 3 psig. Once set
up, the needle valve should not require adjustment.
Pass/Fail
You should observe that the test fails on the open lines (tubes disconnected) and
passes on all of the connected lines. It fails because it can not build up adequate
pressure on the open lines. However, if you plug off one of these ports with your
finger, while it is being tested, it should pass. Observe the pressure gauge between
the needle valve and S10 ( Figure 20 ). On lines that pass, you will see the pressure
build up from 0-3 psig to 10-15 psig. On lines that fail, you will see little or no
pressure build up.
Configuration problems
You may still run into problems. The Line Leak Test has configurable variables, which
are the pass/fail set point (typically 7-10 psig) and the test time per point. If some
tubing runs are unusually long, more test time may be needed. HA can change the
configuration, if necessary.