Honeywell ACM 150 - Line Leak Test Setup Procedure; Table 7: Backup Vacuum Pump Parts List

ACM 150
131
Table 7: Backup Vacuum Pump Parts List
Item #
Service Part
Quantity
1
Body
1
2
Vane*
1
3
Shroud
1
4
End plate
1
5
Gasket*
1
6
Muffler box
1
7
O-Ring*
2
8
Felt* (Do not use)
2
9
End cap
2
10
End cap arm
2
11
Nipple
2
12
Plate bolt
1
Service Kit
* denotes parts included in the Service Kit
1
10.5.3. Line leak test setup procedure
These are the procedures recommended to set up the Line Leak Test so that it works
correctly:
10.5.3.1. Prepare for test and setup
Disconnect a few sample tubes at inlet fitting, e.g., points 1 through 4. Ensure you have
CDA supplied to the ACM 150 monitor and have installed check valves at all the sample
point inlets.
10.5.3.2. Line leak test mode
Select ‘Perform an Entire Line Leak Test from the Hardware Servicing menu.’ 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.
10.5.3.3. 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 (ensure the
needle valve is not closed - open it one or two turns, if necessary). Once set up, the air
regulator should not require adjustment.
10.5.3.4. Adjust needle valve
On the initial setup, close the needle valve 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 until the pressure reads about 2 or 3 psig. Once set up, the needle valve should
not require adjustment.
10.5.3.5. Pass/Fail
You should observe that the test fails on the open lines (tubes disconnected) and passes
on all the connected lines. It fails because it cannot build 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).