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SVC 3- 14
Remove/Replace Manual Pressure Control (MPC) Components
`
HAZARDOUS VOLTAGES ARE PRESENT IN
THE INSTRUMENT WHEN THE POWER CORD
IS CONNECTED.
AVOID A POTENTIALLY
DANGEROUS
SHOCK
HAZARD
BY
DISCONNECTING
THE
POWER
CORD
BEFORE WORKING ON THE INSTRUMENT.
`
FLAME IONIZATION (FID) AND NITROGEN
PHOSPHOROUS (NPD) DETECTORS USE
HYDROGEN GAS AS FUEL. BE SURE ALL
HYDROGEN GAS IS TURNED OFF AT ITS
SOURCE BEFORE REPLACING ANY FLOW
COMPONENTS.
1. Set the main power line switch to the off position.
2. Disconnect the power cable from its receptacle.
3. Allow time for the oven and heated zones to cool.
4. When the heated zones are cool, turn off all gas
supplies.
5. Remove the two screws securing the left
side panel along its bottom edge.
6. Slide the left side panel towards the rear
of the instrument and lift.
7. Disconnect plumbing fittings as necessary to
remove the flow module from the instrument.
(The hydrogen lines are painted red at their
ends. Remember which line is installed at each
fitting; draw a diagram if necessary.)
OFF
ON
RED O VISIBLE
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