4700 Refrigerated Sampler Service Guide
Section 2 Sample Delivery System
2-16
Figure 2-20 Removing the detector protective barrier
2.4 Pump Cover Assembly
The pump cover assembly (Isco part #60-4704-142) was
developed to provide the pump with additional security and pro-
tection from the environment, and is now a standard part. The
following instructions explain how to install the pump cover on
an older refrigerator.
Tools
Marker pencil, #2 Phillips screwdriver, Electric drill with
1
/
8
" bit,
Ruler
WARNING
The pump is extremely powerful and can injure you
severely if the sampler activates while you are servicing it.
Turn the sampler OFF and remove AC power before
performing any service work on the sampler.
1. Open the pump cover and, following the instructions in
Section 2.2, remove the pump module.
2. With the cover in the closed position, align the bottom
hinge plate along the refrigerator frame as shown in
Figure 2-21. Draw a reference line on the frame, along the
bottom edge.
Remove
hold-down
panels (2)
Peel up
fluoroglass
barrier
Piezo film
detector
Apply silicone
sealant
Tubing grooves
(keep clean)
60-4704-142
Содержание 4700
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