HART HPRT50 Operator's Manual page 6

OPERATION
VARIABLE SPEED SWITCH TRIGGER
See Figure 2, page 8.
The variable speed switch trigger delivers higher speed with
increased trigger pressure and lower speed with decreased
trigger pressure.
To turn the tool ON, move the lock out lever to the unlocked
position and depress the switch trigger. To turn it OFF,
release the switch trigger and allow the tool to come to a
complete stop.
NOTE: A whistling or ringing noise coming from the switch
during use is a normal part of the switch function.
WARNING:
Battery tools are always in operating condition. Lock the
switch when not in use or carrying at your side, when
installing or removing the battery pack, and when installing
or removing sockets.
LED LIGHT
See Figure 2, page 8.
The LED light illuminates when the switch trigger is
depressed.
If the tool is not in use, the time-out feature will cause the
light to start fading and then shut off.
The LED light illuminates only when there is a charged
battery pack in the tool.
INSTALLING AND REMOVING SOCKETS
See Figure 3, page 8.
WARNING:
The ratchet head may become hot during periods of
extended use or when the tool is under stress. Allow
the ratchet head to cool completely before touching the
ratchet head. Touching a hot ratchet head could result in
burns or other injuries.
Always select the correct size socket for nuts and bolts.
Using the wrong size socket may damage the nut or bolt and
cause the fastening torque to be inaccurate or inconsistent.
Lock the switch trigger and remove the battery pack.

Push a 1/4 in. socket (not included) onto the anvil until

the detent pin locks it into place.
To remove the socket (not included), pull it away from the

anvil.
NOTE: MAINTENANCE INFORMATION BEGINS ON PAGE 7 AFTER FRENCH AND SPANISH
LANGUAGE SECTIONS. ILLUSTRATIONS START ON PAGE 8.
OPERATING THE RATCHET
See Figure 4, page 8.
WARNING:
Do not drive a bolt where there is likely to be hidden
wiring behind the surface. Contact with a "live" wire will
make exposed metal parts of the tool "live" and shock the
operator. If you must drive a bolt where hidden wire could
be present, always hold tool by insulated gripping surfaces
(handle) when performing the operation to prevent a shock
to the operator.
NOTICE:
The ratchet is not designed to be used as a drill.
Proper fastening torque is determined by the kind of bolt,
the size of the bolt, or the material of the workpiece. This
tool is designed only to speed the installation and removal
process and is not intended to replace a torque wrench. For
applications where proper torque is important, always use
a torque wrench to verify that proper torque is achieved.
NOTE: Do not use this tool to install lug nuts on wheels.
Install the desired socket.

Adjust the forward/reverse dial on the back of the ratchet

head to choose the desired rotation direction of the
socket.
Hold the tool in front of the workpiece with the socket

over the nut or bolt.
Depress the switch trigger and fasten or loosen as

desired.
NOTE: After fastening, always check the torque with a
torque wrench.
NOTICE:
Do not turn the tool off and attempt to use the tool
manually to gain extra torque on the nut or bolt being
tightened. Doing so could cause damage to the fastener
and/or the tool.
6 - English