85
Maintenance
7
Simple Repairs
Simple Repairs
The procedures described in this section can be done with the autosampler in
place in the stack. You will do some of these procedures on a more frequent
basis.
Tabl e 18 Simple Repair Procedures
Procedure Typical Frequency Time Required Notes
Exchanging the needle
assembly
When needle shows indication of
damage or blockage
15 minutes See “Needle Assembly” on page 86
Exchanging the seat
assembly
When the seat shows indication of
damage or blockage
10 minutes See “Needle-Seat Assembly” on page 89
Exchanging the rotor
seal
After approximately 30000 to
40000 injections, or when the
valve performance shows
indication of leakage or wear
30 minutes See “Rotor Seal” on page 94
Exchanging the
metering seal
When autosampler reproducibility
indicates seal wear
30 minutes See “Metering Seal and Plunger” on
page 98
Exchanging the gripper
arm
When the gripper arm is defective 10 minutes See “Gripper Arm” on page 102
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