Ransburg 9040 Cascade LV Control Unit 76580 - Manual (Page 38)

CP-97-04.3 3 5 3 5 3 5 3 5 3 5
9040 Cascade Low Voltage Control Unit - Maintenance
HV Adjust Potentiometer HV Adjust Potentiometer HV Adjust Potentiometer HV Adjust Potentiometer HV Adjust Potentiometer
1. Remove knob from HV adjust potentiometer
by using a 1/16” Allen wrench to remove the two
(2) set screws.
2. Ensure control unit is unplugged from AC outlet,
loosen front panel screws, and slide control unit
chassis out.
3. Remove heat shrink tubing and unsolder the
wires from HV adjust potentiometer 1 POT.
4. Remove the hex nut securing 1POT to the front
panel and remove 1POT.
5. Install the new potentiometer (see “Parts
Identification” section fo this manual for ordering
information) in the front panel.
6. Using heat shrink tubing and appropriate solder
techniques, solder the wires to the new
potentiometer as follows:
> It is recommended that the three (3)
wires be tagged with their respective ter-
minal connections to 1POT before unsol-
dering.
N O T E N O T E N O T E N O T E N O T E
7PL-1 1POT-1 *
1SOC-6 1POT-2
7PL-5 1POT-3
IM- 1POT-1 *
* Indicated 2 connections to the same point.
From From From From From T T T T To o o o o
7. slide chassis in, secure front panel screws,
and plug control unit back in.
8. Reinstall adjust knob using 1/16” Allen wrench.
PC Board PC Board PC Board PC Board PC Board
1. Ensure control unit is unplugged from AC outlet,
loosen front panel screws, and slide control unit
chassis out.
2. Disconnect plugs 6PL, 7PL, and 9PL (see
Figure 4).
3. Remove two (2) screws from heat sink base
and lift the PC board out.
> DO NOT remove the PC board from the
heat sink as it is an integrated assembly.
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
!!!!!
4. Insert new PC board (see “Parts Identification”
section of thismanual for ordering information) and
secure the two (2) heat sink screws.
5. Reconnect plugs 6PL, 7PL, and 9PL.
6. Slide chassis in, secure front panel screws,
and plug control unit back in.
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