4700 Refrigerated Sampler Service Guide
Section 2 Sample Delivery System
2-8
Figure 2-9
Pump band latch
2.3.4 Optical Disk & Sensor
Removal of the optical disk may become necessary, either for
replacement of the disk and sensor, or in order to free the drive
shaft.
Tools
#2 Phillips screwdriver,
11
/
32
" nut driver,
3
/
32
" Allen wrench
To remove the optical disk, grasp the pump rotor to hold the
shaft in place and remove the mounting nut. Carefully tilt and
slide the disk away from the sensor. If the optical sensor must be
removed, remove the two Allen screws holding it in place
(
1
/
4
" lock nuts in older models).
Figure 2-10 Optical disk and sensor removal
CAUTION
Do not allow the disk to scrape against the optical sensor dur-
ing removal/replacement.
The optical sensor is fragile. If it does not need to be replaced,
set it aside so that it does not get broken.
Latch screws
Remove
nut
Remove
2 Allen
screws
Содержание 4700
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