Clarke PRO235 Operating & Maintenance Instructions

OPERATING & MAINTENANCE

INSTRUCTIONS

GC012/11

1/4” DRIVE DIGITAL TORQUE WRENCH

Model No: PRO235

PART NO: 1700635

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

INTRODUCTION

Thank you for purchasing this CLARKE Torque Wrench.

This CLARKE product has been designed to give long and trouble free
service. If however, having followed the instructions in this booklet carefully,
you encounter problems, take the unit to your local CLARKE dealer.

GUARANTEE

This product is guaranteed against faulty manufacture for a period of 12
months from the date of purchase. Please keep your receipt which will be
required as proof of purchase.

This guarantee is invalid if the product is found to have been abused or
tampered with in any way, or not used for it’s intended purpose.

Faulty goods should be returned to their place of purchase, no product can
be returned to us without prior permission. This guarantee does not effect
your statutory rights.

ENVIRONMENTAL PROTECTION

Do not dispose of this product with general household waste. All tools,
accessories and packaging should be sorted, taken to a recycling
centre and disposed of appropriately according to the laws govern­ing Waste Electrical and Electronic Equipment at a recognised dis­posal facility.

GENERAL SAFETY PRECAUTIONS

1. Never exceed the permitted maximum torque value for this wrench.
Overloading the wrench could cause damage.

2. Ensure that associated adaptors, extensions and sockets are rated to
equal or exceed the torque being applied.

3. Always use the correct size and type of socket for the nut/bolt.

4. Never use sockets showing wear or cracks.

5. Always pull the wrench towards you. Never push it away and adjust your
stance to prevent a fall should something give way unexpectedly.

6. Never operate the torque wrench or remove the batteries with wet
hands.

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

SPECIFICATION

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Please note that the details and specifications contained herein, are correct at the
time of going to print. However, CLARKE International reserve the right to change
specifications at any time without prior notice.

OVERVIEW

This torque wrench is designed to tighten nuts with precision and with careful
and considerate use, the wrench will give years of reliable service. Features
of the wrench include:

• LED Screen with Back Light (Blue)

• Audible/light Alarm (when pre-set target torque is reached)

• Auto Power-Off

• Peak Value Hold/Track selection

• Target Torque Value Preset

• Low Battery Indication

• Moulded Storage Case

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

THE CONTROL PANEL

THE DISPLAY B

A C

D

A Peak/Track mode indicator

B The value of torque measured/preset value displayed

C Selectable units of measurement

D Battery Condition indicator

THE PUSHBUTTONS 1 2 3

6 5 4

1. Warning LED illuminates when pre-set torque is reached

2. M/u button for measurement unit selection and to select between ‘Track’
and ‘Peak’ modes

3. Zero/tare.

4. Change the value of the pre-set torque.

5. lluminating the display / press to move to the next digit.

6. Power ON/OFF button.

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

PREPARATION FOR USE

FITTING THE BATTERIES

1. Unscrew the battery cap.

2. Install batteries (2 x CR2032 as supplied) with their marked faces outwards,
and screw the cap back on.

• If the batteries are in poor condition the icon will flash during
operation and new ones should be fitted.

• Typical life of the batteries is 60 hours continuous use.

SWITCHING ON & OFF

1. Press the button to turn the wrench on.

• The LCD panel will display all characters and after 2 seconds the display
will show 0.00.

• The wrench will be in

‘TRACK’ mode, i.e., it will measure and display the

actual torque detected.

3. To manually turn the wrench off, press and release the button.

• If you do not use the wrench for 3-4 minutes it will turn off automatically.

4. Never turn the wrench off while force is applied.

DISPLAY LIGHTING

1. Press the button for the display lighting to come on.

2. Press again to turn the lighting off.

HOW TO SET ‘TRACK’ OR ‘PEAK’

1. Press and release the M/u button to exit peak, if track is preferred.

• The display can alternate between peak and track (track is the default
mode and is not displayed.

HOW TO SELECT THE UNIT OF MEASUREMENT’

1. Press and hold the M/u button for 2 secs.

• The display will scroll quickly through the available units of measurement.
(N.m, lbs-in, lbf.ft and Kgf.m).

2. Release the M/u button when your required unit is shown.

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

HOW TO SELECT PRE-SET TORQUE SETTING

1. With the wrench in either peak or track mode, and the unit of

measurement already chosen, press the

+ (SEt will flash briefly) the torque

value is displayed with the first digit flashing.

2. Press the

+ within 5 seconds to increase the number until the required

value is reached.

3. Press to move to the right and select the number using the

+

button.

• The target torque will display for 3 seconds, then revert to 0.00.

4. Press M/u to set the value.

5. Press and hold the to clear the display and take another reading.

• Again this will display for 3 seconds then revert to 0.00.

OPERATION

1. Place the square drive on to the socket or extension bar, perpendicular to
the nut/bolt to be tightened. Smoothly tighten your fastening, applying an
even pressure throughout the operation.

• As the target torque setting is approached, the LED will flash and the
alarm will bleep, before a continuous tone and light when the target
torque is reached or exceeded.

• If in PEAK mode, the red LED will light up and the alarm will bleep when
the target torque is reached and the highest measured reading will be
displayed and stored. Press the to clear this reading before taking
another measurement.

CARE OF THE WRENCH DURING USE

1. Take care not to drop the wrench on a hard surface and re-set the unit as
described under MAINTENANCE & CALIBRATION, should it be subjected to
sudden shock.

2. Take care not to damage the LCD display.

3. Never apply force with the torque wrench when the power is off. Always
turn the unit on before using it.

4. For assured accuracy of the wrench, periodic self re-setting is necessary as
described under MAINTENANCE & CALIBRATION.

5. Check that the wrench operating range is adequate for the anticipated
load before proceeding. Do not exceed the maximum rating of the
wrench (30Nm or equivalent units).

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Parts & Service: 020 8988 7400/E-mail:[e-mail] or [e-mail]

6. Re-set of the unit if you believe its capacity may have been exceeded.

7. Never use the wrench to undo bolts & nuts which may be excessively
tight. Very tight nuts and bolts should be loosened with a standard wrench
and the torque wrench used only for re-tightening.

8. Do not expose the wrench to extreme temperature, humidity or direct
sunlight for extended periods.

9. Avoid using knuckle or universal joints, as these could possibly result in
inaccurate torque settings.

STORAGE & CLEANING

1. Store in a clean, dry environment away from excess heat, humidity or dust.

2. If the wrench is not to be used for long periods of time it is advisable to
remove the batteries to avoid the risk of leaking.

3. Clean by wiping the tool and the display with a soft cloth. Never immerse
it in water or any type of solvent or cleaning fluid.

MAINTENANCE & CALIBRATION

The wrench has been calibrated at the factory order to ensure accurate
readings and should not require any re-calibration. The original calibration
certificate should be supplied.

If inaccuracy is suspected, contact your local Clarke dealer.

To maintain the accuracy of the wrench periodically reset by holding the

M/u and buttons together.

Do not attempt to dismantle the wrench.

BATTERY USE AND CARE

1. If when switching on, there is no reading on the display, or the ‘Battery
Condition Indicator’ on the panel is empty, the batteries must be
replaced.

2. Never combine used batteries with old ones or mix battery types.

3. Never use a battery if it is cracked or damaged.

4. Always dispose of old batteries appropriately. Never either dump or
incinerate old batteries.