Electrical Connection; Water Connection; Mains Plug - TYROLIT Hydrostress DME39UW Serie Manual De Instrucciones

3.3 Noise emissions and vibration (EN 50144)
The typical A-rated sound pressure level is 72 dB(A).
The typical A-rated sound level is 85 dB.
The typical rated acceleration is 2.5 m/s².
4. P R E P A R A T I O N
Convince yourself that the machine has not been damaged in transit. Check that the nominal voltage is
the same as the voltage indicated on the rating plate.
4.1

Electrical connection

Operate this machine only via a properly earthed 3-phase socked
(CEE 5 poles 3P+PE 16 A 6h - 400V, resp. NEMA L15-20, 3P+PE 20A - 250V).
When properly used, water doesn't enter the machine, so that the operation directly on the electrical
mains is possible. As, when the machine is demaged,the water protection is no longer guaranteed, we
recommend to use a RCD for saving the operator.Please take care for a correct mains voltage.
Incorrect mains voltage, like undervoltage, phase-disconnection or unsymmetrical phase voltage
decrease the power output considerable and can take to irreparable demages of the motor.
4.2

Water connection

Connect the water to the water supply via the plug-in nipple.
Attention: max. water pressure 3 bar.
Please use a Geka coupling as the connecting piece to the machine.
Use only clean water, as dirty water will considerably disturb the heat exchange on the cooling surface
and thereby the motor can be totaly demaged. Else the seals wear out very quickly.
When water issues from leakage hole on the water supply bush, the seals are to be changed at once.
This is only to be done in an autorised prepare centre.
Attention: Under full power conditions are at least 1l water per minute required.
Open the water coupling after the operation, so that the cooling split can empty.This is espescially in cold
seasons very important because of danger of frost.
4.3 Fitting up in the core drill rig
The DME39UW***/DME52UW*** is fastened at the gear foot (see illustration) with 4 M8 screws with the
core drill rig (2).
Choose these screws with a lenght of thread engagement of at least 15 mm and tighten them
with a torque of 20 Nm.
Place the machine only in a stable core drill rig which has precise guides which are free from clearance.
Ensure that the machine axis is absolutely parallel to the rig column.
Only use rigs with sufficient stability.
4.4 Mains switch - ON-OFF-button (1c) and integrated overcurrent protection
The DME39/DME52 is directly thermal protected by a thermal switch in the stator windings. The load
current is switched by a contactor which is fixed in the switch case. On the top of the machine is the ON-
OFF-button, which is connected with the switch case via the cable.
If the motor is overloaded, the contactor switches off. Let the cooling keep on running, so that the motor
is able to cool fastly. In this case it is possible to switch the machine on already after 20 s.
4.5

Mains plug

A phase inverter is fixed in the mains plug.
With a big screw driver it is possible to change the rotation by distorting of two phases (contactpins).
Don't use the rotation return for loosening the core bit, as this might demage the gear. Operate
the machine only in the stated direction (rotation arrow on the gear case).
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