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How To Prepare the Machine For Operation

How To Charge The Batteries

WARNING: Charging the batteries in an area without adequate ventilation could result in an explosion. To prevent an explosion, charge the batteries only in an area with good ventilation.

WARNING: Lead acid batteries generate gases which could explode. Keep sparks and flames away from batteries. NO SMOKING!

To charge the batteries, follow this procedure:

1.Place the machine on a flat-level surface with adequateventilation.

2.Set the parking brake if one is provided.

3.Remove power to the control panel by pressing the red "OFF" button. If the machine is equipped with a key switch, turn the key counterclockwise to the "OFF" position.

4.Before charging the batteries, the battery compartment needs to be vented. To vent the compartment, the recovery tank needs to be proppedopen.

WARNING: Before raising or removing the recovery tank, be sure tank is empty. Do not operate or perform maintenance on the machine while the recovery tank is in the open position. The tank can be accidentally bumped and it may slam shut.

5.The FOCUS 17/20 is equipped with an on-board charger located behind the recovery tank (See Figure 17). The charger is a 3-stage charger designed to maximize battery life. The AC power cord to the on-board charger is located in its storage compartment under the control handle at the rear of the machine (See Figure 16). Pull the cord out of the storage compartment.

6.Connect the charger to a properly grounded single phase (3-wire) wall receptacle. NOTE: When the charger is plugged into the wall receptacle, the yellow light will be illuminated on the control panel next to the plug symbol and the charger with begin charging (see figure 3, item A).

3-Stage Charging Sequence:

•Bulk Stage - In the bulk stage of charging, the red light is illuminated on the charger (See Figure 17). During this stage the charger is supplying its full amp output to the batteries. It will continue to charge the batteries at this rate until the batteries reach approximately 75% of their capacity.

Figure 16

Figure 17

Clarke® Operator's Manual -FOCUS S17/L17 and S20/L20

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