HMC Electronics ESL300 Delta Regis Electric Screwdriver, Direct Plug-in - Manual (Page 4)

120/220VAC Direct Plug-In
Operation Manual
Page 4
600 Series
An external torque adjustment nut located at the nose of the screwdriver is used to set the output torque of the
screwdriver. A reference scale (0-8) is available as a guide - this scale is for reference only and does not indicate actual
torque values. Rotate the torque nut clockwise (covering higher numbers on the scale) to increase torque output, ccw
to decrease torque output. Always make adjustments starting below the desired torque and working upward in gradual
increases.
We recommend the use of an appropriate torque tester and static joint testing after installation to verify proper torque
settings. An optional torque lock sleeve can be purchased as an accessory. This sleeve replaces the tool’s housing nut
and covers the torque adjustment nut to deter tampering.
Please note that, on a new tool, the torque output may decline during the initial break-in period. The decline will
become minor and stabilized afterwards. To ensure required torque output, the user should check torque output
periodically with a torque meter and adjust as required.
Setting the torque
Getting Started
Unpack the screwdriver from its box and confirm that all items have been received in good condition. The screwdriver
is shipped with the appropriate grounded power cord for connection to the AC supply receptacle.
Select a suitable location for plugging in the screwdriver. Ensure that the location allows for the required range of
motion of the screwdriver without stressing the power cable. The cable should bend naturally and always have some
play in it. Undue stress put on the cable will result in premature cable failure.
Installing Driver Bits
Retract the sleeve on the bit holder and insert the desired 1/4” hex power bit. Release the sleeve and ensure that
the bit is properly locked in place by pulling back and forth on the bit.
Make sure that the tool’s start mechanism (lever or push-start) is not engaged and the fwd/off/rev switch is in the
‘off’ position to prevent the tool from accidentally starting when plugging in the tool.
Depending on the model of screwdriver selected, the screwdriver will have either a start lever or a push-to-start
mechanism (models with ‘P’ suffix). All models also have a forward/off/reverse switch. Please note that the center
position of this switch is ‘off’. The screwdriver switch should be left in the off position when the tool is not being used for
any extended length of time.
Hold the tool grip securely in your hand so that the index finger is over the trigger mechanism and the thumb can be
used to cycle the fwd/rev switch if necessary. For higher torque models (eg ESL385E/PE), we recommend the use of a
torque reaction arm to improve operator ergonomics.
Familiarize yourself with the operation of the tool by free running the tool before use at higher torque values.
Note - Do not switch from forward to reverse (or reverse to forward) while the motor is running.
Recommended Grip
Driving the Fastener
Put the fwd/rev switch in the forward position. For lever start models, squeeze the trigger and hold until the clutch
reacts. Shut-off clutch models will turn off when the clutch activates, ratchet clutch models will click continuously when
the clutch activates. If using a push-to-start model, apply adequate downward force to start the tool and hold until the
clutch reacts and the tool shuts off. The preset torque will not be reached if the trigger mechanism is released before the
clutch activates. Ensure that enough downward force is applied to prevent the screwdriver bit from camming out of the
fastener during the rundown process.
Documentation Provided By HMC Electronics
33 Springdale Ave. Canton, MA 02021
http://www.hmcelectronics.com
(800) 482-4440