ROLA-CHEM Digital Controller PN 554135 12/26/18 Page: 21 of 24
8.2 Factory Default Setting
Reset:
The controller can be reset at any time to the default factory settings.
The factory presets are:
ORP set level: 650mV
pH set level:
7.4
ORP alerts: high- 900 mV, low- 100 mV
pH alerts: high- 8.0, low- 7.0
Feed time: 0.6 seconds
Consecutive Feed Alert Limits: 20 cycles for timed feed mode or 20 minutes for
continuous feed mode
Note: Record current settings before performing reset.
To reset factory default settings, follow these steps:
A. Press MODE to ORP or pH.
Hold MODE button until display reads “oFF”.
Release the MODE button. Only the flow light should be on.
B. Simultaneously depress and hold SET LEVEL and pH CALIB buttons.
While they are depressed, press the MODE button.
The displays will read “Ld” and then turn On.
C. Release the buttons.
D. The controller is now in test mode. Test mode reduces the feed delay time from 5
minutes to 5 seconds to simplify diagnostics.
E. Turn the controller Off again to exit test mode.
F. Turn the controller On to return to operating mode.
The last two steps are extremely important because this puts the controller back in operating
mode. If these two steps are not performed the controller will remain in test mode and it will
not operate properly.
8.3 Water Chemistry Ranges
(These ranges are in accordance with suggested NSPI
Standards for swimming pools.)
pH:
7.4-7.6
Alkalinity:
Approx. 80-120 ppm ** (parts per million)
Higher levels may be acceptable in areas where it naturally occurs in the local
water supply. Consult a pool professional in your area.
Cyanuric Acid:
0-50 ppm.
(Maintain at 30 ppm or less for best probe life.)*
TDS (Total Dissolved Solids):
300-2000 ppm
Calcium Hardness:
200-400 ppm
Free Chlorine:
1.0-3.0 ppm (> 700 mV ORP)
*20-30 ppm of cyanuric acid provides approx. 95% of the shielding effect for chlorine.
**When using tri-chlor, recommended alkalinity is 95-125 ppm.
