Cebora PLASMA PROF 162 - Page 14

CEBORA S.p.A. 14
3.302.002 03/08/00
Correct?
Correct?
Correct?
COOLING UNIT TEST (only with CP200 torch).
q Control board (62), connector J5, terminals 2 – 4 = 0 VDC (unit activated);
q Control board (62), connector J5, terminals 3 – 4 = 0 VDC (pressure OK).
YES
NO
♦ See Cooling Unit Service Manual art. 1339.
TORCH BOARD POWER SUPPLY TEST.
q Torch board (68), connector J3 terminals A – B = 24 VAC.
YES
NO
♦ Check the wiring between connectors J3 on board (68) and J3 on board (8).
♦ Check fuse F3 on board (8); if broken, replace and make sure that terminals A - B
of J3 on board (68) are not short-circuited. If so, replace board (68).
♦ Check the 24 VAC on terminals 0 – 24 of board (8); if missing, check the wiring
between the service transformer and board (8), or replace the service transformer
(8). If present replace the fuse board (8).
START COMMAND TEST.
q Control board (62), connector J4 terminals 1 – 2 = 0 VDC (start) with torch button pressed (5
VDC with button released).
YES
NO
♦ Make sure that the nozzle guard is correctly assembled and in good working
order. If defective or showing signs of wear, replace.
♦ Check the wiring between connectors J4 of board (62) and terminals S6 and S7 of
board (68), and between J2 on board (68), fixed fitting (50), torch button and
torch nozzle protection contact (if HV-16 module is installed, see par. 3.6).
♦ Make sure that the fixed fitting (50) is correctly assembled and in good working
order: protection on = reed closed, 0 ohm between terminals SW1 and SW2 on
board (68).
♦ Check for bridge presence on terminals 1 - 2, connector J8 on board (68). If the
interface module art 197 is installed, J8 must be connected to connector (L) for
remote control. (see Service Manual and Instruction Manual of the remote control
interface art. 197).
♦ Replace the torch start button.
♦ Replace board (68) and make sure the conductors of the start button, the electrode
and torch nozzle are perfectly insulated. If insulation is reduced, replace the
complete torch. A loss of insulation between the conductors of the torch cable
may damage the board (68).
♦ Replace board (62).