17
b.
Remove the Filter Housing by loosening both poly flow fittings with a 7/16”
wrench.
c.
Open the Filter Housing using two 9/16” wrenches on opposite ends. When the
housing comes loose be careful not to lose the small spring located within (see
picture below).
d.
Replace the filter and make sure the number “15” is showing face up when placed
inside the housing. Followed by the spring and then the top will screw back into
place.
e.
Tighten the housing with the 9/16” wrenches and replace the Filter Housing back
in line with the Carrier Air port using the 7/16” poly low fittings.
2.
If the Carrier Air still won’t adjust after changing the 15 Micron filter, then the
Regulator may be bad.
a. Check all fittings by tracing the flow using the
flow diagram
.
b.
If all fittings are tight and no leaks are found, then the regulator needs to be
replaced. Switch to the spare MLogger and contact the MSI office.
3
Look inside the MLogger on the
Red Side
. Identify the 24-volt pump and feel if there is
any vibration in the pump. If the pump is quiet and still, then it has gone bad and
needs replaced. Switch to the spare MLogger and contact the MSI office.
Chromatograph won’t Display any Gas Peaks
1.
Re-Zero the GC filament and try another chromatograph run.
Note: do not re-zero
the GC when the chromatograph is running; be sure the chromatograph is
stopped
.
2.
Check the scale used to measure the chromatograph window. Verify that the correct
scale has been selected. Small curves require a small scale to observe.
3.
Check the GC flow meter to see if it will adjust. If it doesn’t adjust, the ball valve may
be turned to Test Gas. Or, there may be a leak before the sample reaches the flow
meter.
