Routine Maintenance: Inlets; Maintaining A Split/Splitless Inlet - Agilent Technologies 6850 Series II User Information

Routine Maintenance: Inlets

The procedures described in this section can be performed by the user to
maintain the inlets in the GC. They may involve exposure to heated surfaces,
but not to hazardous voltages.

Maintaining a split/splitless inlet

To install a liner and O-ring
Choose liners according to the type of injection you are doing—split or
splitless. Many liners are available and can be ordered from the Agilent catalog
for consumables and supplies.
Tools and materials
•
•
•
Procedure
1.
Warning If the inlet cools to room temperature, the liner will probably stick and be
broken. The rest of this procedure should be performed with the inlet hot. Use
gloves and forceps to avoid burns
2.
3.
4.
5.
6.
7.
Released: March 2004
Liner, part no. 5183–4647 (split) or 5062–3587 (splitless)
Septum wrench (part no. 19251–00100)
Viton O-ring (part no. 5180–4182)
Load the SERVICE method or reset the inlet and oven temperatures to
OFF or turn the main power switch off.
Turn the carrier gas off at the source.
Loosen the insert retainer nut, using a wrench, if needed.
Lift the top insert assembly straight up to avoid chipping or breaking the
liner.
If a liner is present, remove it with tweezers or a similar tool. Be careful
not to chip the liner.
Place a new Viton O-ring (see
page 121) on the new liner about 2 to 3 mm from its top end.
Press the liner straight down into the inlet, flush with the top of the
weldment.
6850 Series II GC User Information
Maintaining a split/splitless inlet
"O-Rings for the Split/Splitless Inlet" on
Routine Maintenance: Inlets
page 120 of 256