Metallisation ARC150-2310D, Operating Manual

Page: 25 / 48

Page 25 of 48
throughputs which in turn will increase the reading on the Ammeter. See Section 3.8
for information on Closed Loop and Open Loop Modes.
10. Squeeze the trigger on the Pistol handle.
11. When spraying the voltmeter (F)
will display the ‘DURING SPRAYING’ figure.
12. In Closed Loop Mode the spraying current will have already been set as per point 9. If
in Open Loop Mode adjust the speed using the Motor control potentiometer
(G) until
the desired spraying current (throughput) is achieved.
NB: The system is designed to be operated at a maximum of 500A. In Closed Loop Mode
(Factory set) the system will limit itself to 500A. If in Open Loop Mode and this current is
exceeded the system will shut down to protect itself. See Section 3.8 for information on
Closed Loop and Open Loop modes.
The ARC150 Arcspray System provides measurement of the Voltage at the Pistol. This allows
for more accurate Voltage reading and makes redundant the need to make allowances for
differing length supplies when setting voltage.
NB:
The Voltages given are approximate minimums. The correct voltage is the minimum
voltage that will maintain a stable arc. Voltages higher than required can result in a reduction
of spray efficiency. Air pressures can be adjusted to suit application: Reduced pressures will
result in a rougher coating finish. Higher air pressures will give a finer finish but may slightly
reduce deposit efficiency. The system will shut down to protect itself if reduced below 2 bar.
Increased pressures will result in finer coatings.
TABLE 1: APPROXIMATE SPRAYING PARAMETERS
MATERIAL
VOLTAGE
(volts
– open current spray)
CURRENT
(amps)
NOZZLE AIR
BEFORE SPRAYING
DURING
SPRAYING
MAX
02E / 21E
Zinc &
Zinc Alloys
2.3
19 16 500 3-4 Bar (44-58psi)
2.5
01E
Aluminium
&
Aluminium
alloys
2.5 31 25-27 500 3-4 Bar (44-58psi)
28E
Arctec**
2.3 36 32 500 2-4 Bar (29-58psi)
72E
Inconel 625
1.6 39 35 300 3-4 Bar (44-58psi)
NB: THE NEXT OPERATION WILL INITIATE SPRAYING
** 28E Wire requires that the 7507L - Low Pressure Transfer Tube MUST be used