DWT K13-15 OA-AL Manual Original página 14

Using quick-change fittings (see fig. 4-5)
• Attach hose clamp 26 to the end of hose 25 (see
fig. 4.1).
• Install quick-change fitting 28�
• Tighten the screw of hose clamp 26�
• Install quick-change adapter 29 on outlet fitting 12
(see fig. 4.2).
• When connecting, insert (until it clicks) quick-change
fitting 28 into quick-change adapter 29 (see fig. 5.1).
• When disconnecting, move the bush of the quick-
change adapter 29, as shown in fig. 5.2, and remove
quick-change fitting 28�
Initial operating
of the appliance
• Make sure the voltage matches technical specifica-
tions printed on the appliance�
• Check power cable and extension cord condi-
tion; if any damage is detected, the cable shall be
replaced�
• Check the condition of the air hose; if damaged,
replace it�
Switching the
appliance on / off
Before connecting the appliance to the mains,
make sure that on / off switch 10 is in the down
position ("OFF").
Switching on:
Move on / off switch 10 upwards (see fig. 6�1, 7�1)�
Switching off:
Move on / off switch 10 downwards (see fig. 6�2, 7�2)�
Design features
of the appliance
Oil-free air compressors
Oil-free air compressors do not require oil changes,
and piston sliding is achieved by using materials with a
low coefficient of friction. It makes easier their using, and
the received compressed air does not contain oil impuri-
ties� Also these compressors has light weight and lower
price, which is an ideal choice for the home workshop�
Automatic switching on / off
After switching on, the appliance operates in a cyclic
mode: pressure relay 9 maintains the constant pres-
sure value in receiver 18, switching on / off the appli-
ance depending on the consumption of compressed
air by connected pneumatic tools� When the appli-
ance is being switched on, the air is sucked through
air filter and injected into receiver 18 through pip-
ing 11� When the maximum pressure value (the value
of this parameter is set at the factory) is reached,
pressure relay 9 is activated and the electric motor
is switched off� Excess air from piping 11 and cyl-
inder is discharged through the unloading valve 15�
Thus, there is no excess pressure in cylinder and
piping 11 - this reduces the load on the electric motor
the next time when the appliance is started� If pres-
sure inside receiver 18 drops to the minimum value,
the electric motor starts up and the appliance starts
pumping air into receiver 18 until it reaches the maxi-
mum value� The appliance operates in this mode as
long as on / off switch 10 is in the up position ("ON")�
If the appliance does not switch off automatically when
the maximum pressure is reached, then the excess
pressure is discharged through safety valve 14� In this
case it is necessary to immediately contact a dedicat-
ed DWT repair workshop�
Temperature protection
Temperature protection prevents from damage to the
appliance, switching it off during excessive loads and
overheating� For example, when using pneumatic tools
whose air consumption exceeds the appliance capac-
ity, or when filter element 32 is clogged, etc� This pro-
tects the electric motor against overload�
When temperature protection is activated button 6 snap
off and appliance switched off� In this case, unplug the
appliance from the mains, eliminate the cause that trig-
gered the protection, allow the appliance to cool down,
press and release button 6, switch on the appliance (as
described above) and then continue working�
Aluminium motor wiring
[K13-15 OA-AL, K13-30 OA-AL, K26-50 OA-AL]
These compressor models are lightweight and lower in
price due to the aluminium motor wiring�
Copper motor wiring
[K13-15 OA-CU, K13-30 OA-CU, K26-50 OA-CU]
These compressor models are more reliable and heat
up less during operation due to the copper motor wiring�
on the appliance operation
Before starting work
• It's recommended to install the appliance on a flat
horizontal surface, this reduces the risk of the appli-
ance turn-over during operation� However, it is allowed
to install the appliance on sloped surfaces, this does
not affect its performance in any way (but you must
first make sure that the appliance can not turn-over
during operation)�
• Connect pneumatic tools to the appliance�
• Connect the appliance to the mains�
• Open the valve(s) on outlet fitting(s) 12�
• When carrying out works related to spraying liquids,
make sure that no drops of liquid get on the appliance�
• If you need to move the appliance during opera-
tion, disconnect it from the mains and depressurize
receiver 18, and then transport�
• If case of any side sounds or strong vibrations on
the part of the appliance, immediately switch it off and
contact the DWT service center�
General recommendations
• Switch on the appliance�
• Do not overload the appliance� The operating mode
of the appliance is intermittent with the cyclic dura-
tion factor of up to 55%, while the duration of a cycle
is 6-10 minutes� It is allowed to operate the device con-
English
14
Recommendations