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Pump Tube
Port
Figure 6-1 Unscrewing the Control Box from the Center Section
6.1.4 Access to Electronic
Components
The voltage levels produced by static buildup from walking
over carpeted floors, movement of woolen or synthetic clothes
over chair seats, workbenches, etc., are high enough to
destroy CMOS circuitry when you are performing repair work.
To gain access to the electronic components housed in the control
box:
1. Disconnect the power source from the sampler.
2. Remove the 10 screws around the outer edge of the con-
trol-box lid, as indicated in Figure 5-4.
3700 Portable Samplers
Section 6 Servicing
Distributor Arm
Retaining Nut
CAUTION
6-3
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