2-71. CONTROL PANEL ASSEMBLY REPLACEMENT/REPAIR (CONT)
e. Backwash Timer Replacement
To prevent electric shock, make sure that pretreatment assembly power cable is unplugged.
Unplug pretreatment assembly power cable.
Remove timer knob. Remove nut on front of timer.
Remove numbered dial. Remove rubber washer.
Pull timer out through rear of control panel.
Install timer through rear of control panel.
Install rubber washer.
Install numbered dial. Install nut.
8 Install timer knob.
Plug in pretreatment assembly cable.