Agilent Technologies 6850 Series II Installing A Split/Splitless Inlet Download Page 6

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Installing a Split/Splitless Inlet
Remove the existing inlet

2.

Slide the cover plate off and disconnect the cable from the flow module.

3.

Disconnect the gas fitting on the back of the flow module.

4.

Remove the three screws on top of the flow module.

5.

To continue this procedure, see the following section corresponding to 
the type of inlet you are removing.

Cool On-Column inlet

1.

Use a T-20 Torx screwdriver to loosen the three captive screws that 
attach the inlet weldment to the top of the inlet carrier.

2.

Slide the inlet up and out of the carrier. If necessary, you can also slide 
the insulation sleeve off of the bottom of the inlet.

Purged Packed inlet

1.

Trace the heater/sensor cable from the inlet to the wiring harness 
connector. Disconnect it.

2.

Remove the three screws holding the inlet. 

3.

Lift the inlet and flow module out of the lid. Remove the insulation in 
the hole under the inlet.

Programmable Temperature Vaporization inlet

1.

Lift the PTV inlet up.

2.

Remove the heater connector from the side panel.

3.

Disconnect the power cable, thermocouple connector, and cryo 
connector from the flow module and board. Disconnect the module 
ribbon cable from the pneumatics board.

4.

Slide the flow module out of the chassis, remove the chemical trap 
assembly from the mounting bracket, and remove the PTV assembly 
from the GC.

Summary of Contents for 6850 Series II

Page 1: ...isassemble it during installation Description Quantity T 20 Torx screws M4 x 8 mm 2 Machine screws M4 x 0 7 12 mm 6 Bottom cup insulation 1 Middle cup insulation 1 Top cup insulation 1 Insulation cup...

Page 2: ...ttom block insulation Top block insulation Screws Split Splitless capillary inlet system 1 2 3 4 Disposable wrist strap Bottom cup insulation Middle cup insulation Top cup insulation 1 Flow Module 2 S...

Page 3: ...nch T 20 Torx screwdriver Overview Caution Before starting review the safety information listed at the end of this document 1 Disconnect the GC 2 Remove the lid top cover 3 Remove the existing inlet i...

Page 4: ...otentially dangerous shock hazard by disconnecting the power cord before working on the instrument 1 Turn off the GC and unplug the power cord Allow time for all heated zones to cool 2 Open the lid If...

Page 5: ...t If the GC currently has an inlet installed you must remove it 1 Loosen the screws holding the connector cover plate next to the inlet flow module Lid top cover without valve box accessory Remove T 2...

Page 6: ...ssary you can also slide the insulation sleeve off of the bottom of the inlet Purged Packed inlet 1 Trace the heater sensor cable from the inlet to the wiring harness connector Disconnect it 2 Remove...

Page 7: ...art of the valve assembly Move it out of the way Disconnect the gang block fitting also part of the valve assembly from the flow module Remove the flow module 3 Use forceps to remove the liner and O r...

Page 8: ...o the sides of the lid 3 Place the flow module in position and secure it with three screws 4 Align the inlet as shown Lower it into the block insulation 5 Secure the inlet with three screws 6 Remove t...

Page 9: ...w module cable into its connector Replace the connector cover plate and tighten the screws 9 Connect the carrier supply line to the back of the flow module 10 Connect the heater sensor cable to the wi...

Page 10: ...ect the insert weldment attached to the valve to the inlet body and tighten the large nut with the inlet wrench Connect the gang block fitting attached to the valve to the front of the flow module Res...

Page 11: ...Installing a Split Splitless Inlet Restore the GC to operating condition 11...

Page 12: ...attention to a condition or possible situation that could A caution calls attention to a condition or possible situation that could On the instrument all phases of operation service and repair of this...

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