Ransburg 9040 Service Manual page 39

Pressure Switch (76580-4XXXX, -
5XXXX, -8XXXX, and -9XXXX)
1. Disconnect pressure signal input line from
pressure switch.
2. Ensure control unit is unplugged from AC
outlet, loosen front panel screws, and slide
control unit chassis out.
3. Remove two (2) wires from pressure switch
terminals.
4. Loosen hex nut from fitting and remove
pressure switch and fitting from control unit.
5. Remove fitting from defective pressure
switch and install on new pressure switch (see
"Parts Identification" of this manual for ordering
information).
6. Install new pressure switch in control unit by
securing hex nut to fitting.
7. Attach two (2) wires to the NO (normally
open) and C (common) terminals of the
pressure switch (it does not matter which one
goes where). Do not attach any wires to the NC
terminal for the pressure switch.
8. Slide chassis in, secure front panel screws,
and plug control unit back in.
9. Reconnect pressure signal input line to
pressure switch.
CP-11-01
9040 Low Voltage Control Unit Kit- Maintenance
LED Display Board
1. Ensure control unit is unplugged from AC
outlet, loosen front panel screws, and slide
control unit chassis out.
2. Unplug display board connector 9PL from
main PC board.
3. Remove two (2) screws that mount display
board to inside of front panel and remove
display board from control unit.
4. Install new display board (see "Parts
Identification"
information) in control unit.
5. Reconnect connector 9PL to main PC board.
6. Slide chassis in, secure front panel screws,
and plug control unit back in.
Kilovolt (kV) or Microamp ( m A)
Meter
1. Ensure control unit is unplugged from AC
outlet, loosen front panel screws, and slide
control unit chassis out.
2. Remove two (2) hex nuts from wiring
terminals and remove wire lugs.
3. Remove four (4) hex nuts that mount meter
to front panel.
4. Remove old meter and install new one (see
"Parts Identification" section of this manual for
ordering information).
5. Reconnect wire lugs to meter (purple wire
goes to + terminal of meter).
6. Slide chassis in, secure front panel screws,
and plug control unit back in.
section of this manual for
36