Ransburg 9040 Classic Power Supply _NO2 Gun 76657-14, -142 - Manual (Page 16)

CP-97-03.6
9040 Classic for the No. 2 Process Handgun - Operation
1 2 1 2 1 2 1 2 1 2
OPERA OPERA OPERA OPERA OPERATING PROCEDURES TING PROCEDURES TING PROCEDURES TING PROCEDURES TING PROCEDURES
1. Ensure that the AC power and high volt-
age cables are connected as described
in the "Installation" section of this
manual.
2. Turn the ON/OFF switch to the ON posi-
tion. The green LED will light indicating
that AC power is being supplied to the
power supply.
3. The voltage to the No. 2 hand gun is ac-
tivated by turning the toggle switch on
the back of the gun to the ON position.
Kilovolt and Microamp Meters Kilovolt and Microamp Meters Kilovolt and Microamp Meters Kilovolt and Microamp Meters Kilovolt and Microamp Meters
The kilovolt meter indicates the voltage in thou-
sands of volts (kV) present at the bell edge.
The microamp meter indicates the current in mil-
lionths of amps (µA) leaving the bell edge.
High V High V High V High V High Voltage Safety Circuit oltage Safety Circuit oltage Safety Circuit oltage Safety Circuit oltage Safety Circuit
The 9040 Printed Circuit Board (PCB) contains
a safety circuit that prevents high voltage from
being present at the gun if the high voltage trig-
ger device (gun toggle switch, flow switch, pres-
sure switch, PC contact, etc.) has not been trig-
gered. If a failure mode should occur that would
attempt to send high voltage to the gun, even
though the high voltage trigger has not been ac-
tivated, the PC Board will shut down and enter
an overload condition. If repeated overloads oc-
cur, every time the overload reset button is
pushed, open the cabinet door and see if the red
LED (LED1, see Figure 7 for location) on the
PC Board lights for about 2 seconds after push-
ing the reset button. If it does, the PC Board
has failed and should be replaced.
High V High V High V High V High Voltage ON Indicator oltage ON Indicator oltage ON Indicator oltage ON Indicator oltage ON Indicator
The red high voltage on LED will light when high
voltage is present at the spray gun.
AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator AC Power ON Indicator
The green AC power ON LED will light when the
AC Power ON/OFF switch is in the ON posi-
tion.
! Check that the power supply is properly
grounded!
C A U T I O N C A U T I O N C A U T I O N C A U T I O N C A U T I O N
!!!!!
LED1, the (+) end of relay coil K3 (mounted on
the relay board), and one of its normally open
contacts.
The output of power supply 1SUP, through PC
board fuse F2, provides the DC voltage which
powers the PC Board regulators and the AC
power ON LED. The DC input to the oscillator
circuit is obtained from a board regulator. The
oscillator circuit outputs a low voltage, high fre-
quency AC signal to the High Voltage Multiplier
Circuit. The High Voltage Multiplier Circuit recti-
fies the AC voltage to DC and steps it up to pro-
vide rated kV to the spray gun via the high volt-
age cable.
The DC input to the oscillator is interlocked with
1TB terminals 6 and 7, such that the oscillator
will not function unless terminals 6 and 7 are
connected together. In this manner, high volt-
age to the spray gun is controlled as follows:
1. Turning the ON/OFF toggle switch at the
back of the spray gun to the ON position
grounds relay board coil K3, thereby ac-
tivating the coil. Activation of the coil
closes its two normally open contacts.
Closure of one set of contacts supplies
LED2 and 24 VDC to the motor. Clo-
sure of the second set of contacts con-
nects 1TB-6 and 7 together, thereby pro-
viding high voltage to the handgun.
2. Contact closure of a programmable con-
troller output, robot output, or some other
user supplied device connected to termi-
nals 1TB-6 and 7 will activate high volt-
age at the spray gun.
3. For testing and troubleshooting, board
jumper JP4 connects 1TB-6 and 7 to-
gether, thereby providing high voltage
output. (See "PC Board Test Jumper" in
the "Maintenance" section of this
manual.)