Condec UPC5210 - Manual (Page 36)

Maintenance & Service 33
Installation:
1. Connect and solder the wires onto their respective switch terminals:
Zero: Terminal Color
Normally open Yellow
(C) common Green
2. Install the new switch, lock washer and nut through the panel rear. Hand tighten the trim ring from front
of panel.
3. Tighten the switch mounting nut and lock washer from the rear of panel. Replace CPU if necessary.
CAUTION: If wrench is used, do not over tighten, damage may occur to switch.
4. Install panel/chassis assembly in its enclosure as described in Section 4.2.1 on page 16.
4.2.27 CPU Assembly, Removal and Installation
120 VAC input - PN 54254, 220 VAC input - PN 54268
Tools required: Phillips screwdriver
Flat blade screwdriver (small)
11/32" open end wrench or nutdriver
Removal of CPU Board:
1. Disconnect the power cord from the power source and line filter. Remove front panel from its enclosure
as described in Section 4.2.1 on page 16, and carefully set on a bench top.
2. Disconnect and/or unsolder the wire connections attached to the CPU board assembly.
NOTE: It may be helpful to mark ends of wire with location. Also refer to the wiring diagram
Figure 4-1 on page 15.
3. Loosen and remove the five screws and two cable clamps (PN 59480) that hold the CPU board assembly
and remove the board.
Installation of Power Supply Board:
1. Position the new board over the five standoffs and install five screws and two cable clamps. Tighten the
screws until snug.
2. Connect and/or solder the wire connections attached to the CPU board assembly.
NOTE: Refer to the wiring diagram Figure 4-1 on page 15.
3. Install panel/chassis assembly in its enclosure as described in Section 4.2.1 on page 16.
4.2.28 Pump Control Board Assembly, Removal and Installation
120 VAC input - PN 56679, 220 VAC input - PN 56682
Tools required: Phillips screwdriver
Flat blade screwdriver (small)
11/32" open end wrench or nutdriver
Removal of Pump Control Board:
1. Disconnect the power cord from the power source and line filter. Remove front panel from its enclosure
as described in Section 4.2.1 on page 16, and carefully set on a bench top.
2. Disconnect the wires from the terminal blocks located on the pump control board assembly.
NOTE: It may be helpful to mark ends of wire with location. Also refer to the wiring diagram
Figure 4-1 on page 15.
3. Loosen and remove the four nuts that hold the pump control board and remove the board.
Installation of Power Supply Board:
1. Position the new board over the four standoffs and install four nuts. Tighten the nuts until snug.
2. Connect the wires to the terminal blocks located on the pump control board assembly (see Figure 4-1 on
page 15.
3. Install panel/chassis assembly in its enclosure as described in Section 4.2.1 on page 16.