Weka SR 35 Manual De Instrucciones página 15

3. P U T T I N G I N T O O P E R A T I O N
3.1 ON-OFF-button and motor protection
After having connected the machine to the mains you can start it by pressing the green ON-button.
The electrical motor protection manages the motor current and limits it to the maximum. Thus the speed
drops if the machine is overloaded. Is the motor relieved, the speed grows to the nominal speed. If you
load the motor further on until the speed falls to zero, the electronic switches the machine off after 5
seconds.
Is the motor operated with too less cooling water, it will be switched off by the integrated overheat
protection. See now immediately that enough water flows through the motor (at least 1l/min) for cooling
it promptly.
On principal care for a sufficient water cooling, as otherwise motor and power electronic may get
damaged.
3.2 Gear change
The SR35/SR75 has a 3-speed gear.
Never use force to change the gear and only change it when the machine is decelerating or has stopped.
Always select the appropriate speed for the drill diameter (see table and rating plate on the machine).
3.3 Safety clutch
The integrated friction clutch protects the operator, the machine and the tool against high mechanical
overloads. On proper use you should realize the releasing of the clutch hardly.
3.4 Drilling
Set the volume of water at the ball valve (1a) concerning the above mentioned table. Thereby take care
that the carried off material is completely flushed out of the drill hole.
If mud forms round the drill hole, this points to the use of too less water.
Use force as required. If you do not, the diamonds will tend to "polish". In this case the rate of advance
will fall constantly until it finally stops.
In this case the segments can only be "sharpened" again by means of a SiC-grindstone.
Is the torque too low, change to the next lower gear.
Take care that the drill bit and therefore the drill rig do not vibrate, otherwise the diamonds are detached
by force and drill rig and machine wear out hugely.
When drilling through reinforcements, you might have to use greater initial pressure and if required
change to the next lower gear.
If the drill blocks, do not try to loosen it by switching the machine on and off. Switch the machine off
immediately and loosen the drill bit by turning right and left using a suitable wrench. Carefully remove
the machine from the borehole.
4. M A I N T E N A N C E
ATTENTION: Before beginning maintenance or repair remove the mains plug from the
supply socket.
Clean the machine once the drilling work has been completed. Also clean and grease the drill bit-holding
thread.
Clean the machine with a dry or moist cleaning-rag and not with a jet of water.
Take care that especially casing, cord enterings and ON-OFF switch are not damaged, resp. put
the SR35/SR75 immediately out of operation if these parts are damaged, as water can enter the
machine and thus a considerable risk of electrical shock exists for the operator. Further more it
is probable that the large-scale electronic gets damaged unrepairably.
In the SR35/SR75 an operating hour counter is integrated which is set to 300 hours. After
reaching this operating time, the start button has to be pressed three times for starting the motor.
Now bring the machine to a WEKA service station for inspection, so that the machine can be
maintenanced and the counter can be set back. Do not work longer than 20 hours now in your
own interest, as you may loose any warranty claims.
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