Functional description, Battery operation, Diagnostics – Porter-Cable 987 User Manual
Page 8: Foreword
8
BATTERY OPERATION
DIAGNOSTICS
The Model 8924 Charger is equipped with a diagnostic system that
automatically checks the battery pack each time a pack is inserted into the
charger. If no problems are found, the charger will automatically switch to
“Fast Charge” mode as described in NORMAL CHARGING.
If a problem is found, it will be indicated by the charger indicator lights, as
follows:
l Make sure power circuit voltage is the same as that shown on the
charger specification plate. Connect charger to power source. The
red and green lights will flash once to indicate that power is
connected properly and the charger is ready for operation.
l If the green light flashes slowly after battery pack is inserted in
charger, the battery pack temperature is either too high or too low for
charging. If left alone, the charger will continue to monitor the battery
pack temperature and will begin charging when the temperature
reaches an acceptable level.
l If the red light flashes continuously, the battery pack has failed (pack
is not chargeable and requires replacement).
As a battery pack approaches the discharged state, you will notice a sharp
drop in tool performance. When the tool is unable to perform the task at hand,
it is time to recharge the battery pack. Recharging the battery pack before
this condition is reached will reduce the total work life of the pack.
Discharging the pack beyond this point can damage the pack.
NOTE: Battery temperature will increase during and shortly after use.
Batteries may not accept a full charge if they are charged immediately after
use. Allow the battery pack to cool to room temperature before charging for
best results.
The battery charger may rest on the four pads provided on
the bottom of the case or be mounted on a wall by utilizing
the two key hole slots provided.
Vent slots in top and bottom of charger must not be
obstructed. Do not charge battery when temperature is
BELOW 40°F(4.4°C) or ABOVE 104°F (40°C).
FUNCTIONAL DESCRIPTION
MAXIMUM CAPACITIES
SPEED
DRILLING
DRIVING
RANGE
MILD STEEL
ALUMINUM
WOOD SELF-FEED BIT
WOOD SCREWS
LOW
3
/
8
"
3
/
8
"
1"
3
/
8
"
HIGH
3
/
8
"
3
/
8
"
1
/
2
"
#10
FOREWORD
Your Porter-Cable Cordless Drill/Driver is designed to drill holes and drive
fasteners in various materials as indicated in the following chart:
984-987 - manual - 905273- 04-08-03.qxd 4/8/03 9:40 AM Page 8