Control System (Battery Model); Functional Description; Control Panel; Main Power Switch - Clarke CA30 20B Service Manual

Service Manual – Clarke CA30 20B and 17E

Control System (Battery Model)

Functional Description

The CA30 20B utilizes a main machine controller to turn on various machine functions. It receives operator
switch inputs, and activates various solenoids and components. Each of the machine components is described
below. Refer to the machine

Control Panel

The control panel (display) provides the main operator interface for the machine. It provides battery status
and contains the switches for operating the machine.

Main Power Switch

The main power switch controls power to the main control board and the hour meter. For the hour meter,
both the positive and negative power leads are switched. For the control board, only the negative power
lead is switched. Positive power is always present at the control board, but passes through a 30-amp circuit
breaker.
This arrangement reduces the total amperage flowing through the main power switch. The power consumed
by the brush motor and vacuum motor do not pass through this switch. Only their control signal power
passes through this switch. This reduces the likelihood of the switch contacts being damaged by high
amperage current flow.
Schematic on page 22 for details.
Battery Indicator
Battery Charge Level
Solution Switch
Vacuum Switch
Hour Meter
Main Power Switch
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