Rola-Chem RC554XXP Dual ORP/pH Digital Controller User Manual
Page 14
Rola-Chem Digital Controller PN 554326 02/17/2014 Page: 14 of 20
B. Displayed chemical level does not correspond to actual level
* ORP=0, pH=6.8 indicates sensors (probe) are attached to incorrect connector
* Sensors (probe) need cleaning.
* Sensors (probe) need replacing.
Note: OPR probe reading can be affected by pH probe.
Both probes must be in good operating condition.
C. Set-points not being reached/maintained
*
Factory setting for feed time is 0.6 sec on with 5 minute delay.
Feeders may require longer feed time. If time is too short, set-points will not be
maintained. If time is too long, overfeeding chemicals will occur. Correct time is
dependent of multiple factors such as pool/spa water volume, feeder output,
chemical concentration and chemical needs.
* Controllers are designed to maintain set-points. Do not expect Controllers to make
major adjustments—major changes should be done manually.
* Pump/feeders must be large enough to reach desired set-points in a relatively
short time. Automation using controllers may require larger feeder or more
concentrated chemicals than system that uses continuous time controlled
feeding (i.e. feeders only).