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MAN255/04B
CHEMTROL
CHEMTROL
INSTRUCTION MANUAL
®
255 PPM/pH Controller
®
250 ORP/pH Controller
TOLL FREE
PHONE
FAX
EMAIL
A Division of SANTA BARBARA CONTROL SYSTEMS
5375 Overpass Road, Santa Barbara CA 93111
TECHNICAL SUPPORT
800-621-2279
805-683-8833
805-683-1893
support@sbcontrol.com
(v. 4.0 and up)
(v. 4.5 and up)
$ 10.00
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Do you have a question about the 255 and is the answer not in the manual?
Questions and answers
How do I turn on the Proportional mode for a CH250? I have 750 gallon Spa so minute additions of bleach or acid can have large effects. The manual just says it is available but nothing about activating or using it (proportional control)
To activate Proportional mode on a Chemtrol CH250, follow these steps:
1. Turn on the controller.
2. Ensure the displays show the necessary information, including sensor readings.
3. Press [ORP] or [PPM] until the feed control light is set to AUTO.
4. Press [pH] until the feed control light is set to AUTO.
Proportional control will then adjust the feed rate progressively as it approaches the setpoint, helping to prevent overfeeding.
This answer is automatically generated