Rola-Chem 554230 ORP Digital Controller User Manual
Page 8
3.3 Power access panel
Access to terminals is through the back of the enclosure. With the controller
removed from wall/panel, remove four screws holding enclosure panel to
enclosure body.
FLOW SWITCH
JUMPER
FLOW SWITCH
LEADS
FLOW SWITCH
TERMINAL
FUSE HOLDER
TERMINAL STRIP
3.3.1 Fuses
Fuses protect the controller from defective feeders. They are located inside the
enclosure.
The fuse holders are shipped with 5 Amp fuses.
3.3.2 Flow Switch Terminal
The controller has a flow switch terminal shipped with a ‘jumper’ in place. The
terminal must either have the jumper or a flow switch installed. The flow light on the
face of the controller is also indicates the controller is connected to a live power
source. If the terminal does not have a closed circuit, the controller will not turn on.
To install a flow switch, remove the jumper and attach flow switch leads. The jumper
should be retained to assist in trouble shooting.
NOTE: It is recommended that an inline filter be used to help keep the flow
manifold (including probes) and flow switch free from debris (see Manifold
Operating Manual).
Debris may obstruct flow switch and prevent the switch from functioning.
Rola-Chem Digital Controller PN 554226 6/01/2012 Page: 8 of 12