Maintaining the PTV Inlet 9
Maintaining Your GC 163
To Change the Septum on the PTV Inlet
1 Gather the following:
• Replacement septum. (See “Consumables and Parts for
the PTV Inlet” on page 152.)
• 5/8- inch wrench
2 Load the inlet maintenance method and wait for the GC
to become ready.
3 Remove the septum retainer nut or Merlin cap. If the
septum head begins to turn during removal, support it
manually while removing the cap.
4 Use tweezers to remove the septum or Merlin Microseal
from the retainer nut. Do not gouge or scratch the
interior of the septum head.
5 Firmly press the new septum or Merlin Microseal into the
fitting. The metal parts side of the Merlin Microseal
should face down (toward the oven).
6 Replace the septum retainer nut or Merlin cap and
finger- tighten. Tighten the septum retainer nut until the
C- ring is about 1 mm above the nut.
Be careful! The oven and/or inlet may be hot enough to cause
burns. If either is hot, wear heat-resistant gloves to protect your
hands.
Merlin Microseal and cap
Standard septum
Overtightening the septum nut can cause contamination.
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