Rola-Chem 554200 pH Digital Controller - Manual (Page 6)

2.2 Specifications
Display: pH 6.8 to 8.2
Control: pH 7.0 to 8.0
Factory default: pH 7.4
Input Power
120 Volts AC, 50/60 HZ, 3 wire grounded power cord. GFCI source required.
Output Power
120 Volts AC, 50/60 HZ, 5 amps (fused)
Two 3-wire grounded power receptacles
Terminal strip for hardwire applications.
Displays:
pH reading -red digital LED
Flow/Power indicator -green LED
Auto (operating mode) indicator -red LED
Alert indicator -red LED
Feed indicator -green LED
(NOTE- lamps flash during feeding and are on constant during delay time of feed cycle.)
O perating Temperature: 40 to 120° F
Features and Options
+ pH setting
+ pH feed/delay time + alert (high & low)
+ Acid/base feed + calibration + Flow switch input
+ Feed time out + fused outputs
2.3 Description of Controls
Modes: The controller has two modes of operation:
• ON/OFF/Set mode
• AUTO mode- operating
To move from one mode to another simply press the MODE button.
On/off /Set mode:
• To turn the controller “on”; press the MODE button.
• To turn the controller “OFF” ; press MODE so Auto light is off and hold the
MODE button for two seconds until the pH displays reads “OFF”.
Release the MODE button and the controller turns off and the
display goes blank.
Rola-Chem Digital Controller PN 554212 6/01/2012 Page: 6 of 12