VERS.2015.05.19 Kit CDR 163 + CDM 203_MAN_EN
14
This device works
also as NVR (“No Volt Release”). It stops the electrical supply of the machine
during a power cut. Therefore, when electricity returns, the machine will not start. You have to
reengage the P.R.C.D. to continue to work.
Before working with the CDR 163, you have to test the P.R.C.D. In order to achieve this follow these
instructions:
Connect the motor to the electrical supply.
Engage the P.R.C.D. on I (or ON).
Press the T (or TEST) button: the P.R.C.D. has to trip on 0 (or OFF).
If the P.R.C.D. trips during work, switch the machine off, and separate it from the electrical supply.
Examine and repair the fault by checking every element of the system (connectors, cables, motor).
3.4 Changing motor speed
Always switch the motor off before changing speed. Turn the gear change lever on the next or
previous gear. Turn the bit spindle by hand to allow the gear alignment.
Repeat these operations until you reach the required gear.
3.5 Water cooling
Ensure that water is flowing freely in the circuit as insufficient water supply may result in premature
failure of the diamond core bit.
To supply the machine with water:
Use the connector on the side of the motor. You can use either the water supply or a manual or
electrical pump.
Check if the water flow is right by looking through the cutting water. If it is fluid, the flow rate is
correct. If it is not fluid, but like mud or paste, you either have to check if the water system is
blocked, or increase the water flow rate.
Obstruct the existing hole when have to enlarge it, so you can obtain a correct cooling water
inflow.
Eliminate the water escape ways and increase the flow rate to the maximum when you have to
drill porous or cracked materials, or make a second drill.
Use a water-collecting device when you drill overhead.
In case of frost, empty the water cooling system.
