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Figure 6-3 Main Circuit Board
6.1.5 Removal of the
Distributor Gear Case
Assembly
Lithium Battery
Danger of explosion if the lithium battery is
incorrectly replaced. Replace with same battery
type (Teledyne Isco Part # 340-5000-000). Ensure
correct polarity. Do not dispose of used lithium
battery in fire.
The distributor gear case assembly is located in the lower section
of the control box. To gain access to the lower section of the
control box, follow the instructions in the Access to Electronic
Components section. Follow the steps below to gain access to
these and other components in the lower section of the control
box:
1. Disconnect power from the unit.
2. Remove the 2 nuts and the screw shown in Figure 6-4.
Remove the ground strap by removing the remaining
screw.
3. Lift the plastic tray straight up out of the control box.
4. The distributor gear case can be removed from the control
box by removing the four screws and the ground straps
shown in Figure 6-5.
The distributor gear case can be reinstalled by reversing these
steps. Ensure that you replace all of the hardware and secure the
grounding straps.
3700 Portable Samplers
Section 6 Servicing
Hex Threaded
Standoff (4)
Phillips Head
Connector
DANGER
Screw
6-5
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