Viper Low overrun Service Manual
Publication Number: 621360241LOEWSE
- 54 -
© 2016, Cornelius Inc.
Figure 48. View of Water Pressure Switch
D
ISPLAY
B
OARD
R
EPLACEMENT
When replacing or testing electronic components, be sure to wear a static strap that is connected to a chassis
ground. This protects the electronic components from any static charge while working on the unit.
The display board is located on the back of the control panel display. It is mounted to the panel with four (4) Phillips
head screws, shown in Figure 49. To replace the board, perform the procedure in Table 59.
Figure 49. View of Display Board
Table 58.
Step
Action
1
Disconnect power from the unit.
2
Remove the side panel from the unit.
3
Turn off the water supply to the unit.
4
Drain the water from the system.
5
Disconnect the wires from the switch.
6
Remove the switch, using two wrenches.
7
Replace the switch with a new unit.
8
Reverse the procedure to install the new switch.
9
Restore the water supply and check for leaks.
10
Check to ensure that the new switch is working properly.
Table 59.
Step
Action
1
Disconnect power from the unit.
2
Connect a static strap to your wrist and any convenient chassis ground on the unit.
Water
Pressure
Switch
Mounting
Screws
Mounting
Screws
