TIMERS
OVERVIEW
The CGC-1e uses 2 digital timers to control the hydroponics and CO2 functions. One of the timers control the hydroponics pump frequency and duration, and the other one determines CO2 injection / generation time and frequency / sample time.
ADJUSTABLE RECYCLING TIMERS
Adjustable recycling timers provide an adjustable “ON” / “OFF” cycle for various devices. The 4-adjustable recycling timers onboard the CGC-1e are set using the dial on the front face of the enclosure. The timer name and range of each timer is printed around the timer dials. Because the dials of the CGC-1e are small to conserve space, the settings may have to be adjusted to an actual time setting. If necessary, use a watch or stopwatch to confirm the settings are correct. Once the timers are set, they are repeatable to +/- .2%.
IMPORTANT: In order for the timers to accept a new setting, the timer must either complete 25% of it’s present cycle or, power must be cycled off, then on.
RESETTING HYDRO TIMERS: The Hydro timers can be reset by switching the Hydro mode select switch to the center “OFF” position momentarily.
RESETTING CO2 TIMERS: To reset the CO2 timers and restart the CO2 cycle, turn the temperature or humidity controller down momentarily. This will trigger the “end of cycle” sequence and start the Exhaust duration timer.
RESETTING ALL TIMERS: If you choose to cycle power to accept new timer settings, we recommend disconnecting the lights prior to setting these timers. Disconnecting the lights will eliminate the chances of damaging the lights by cycling power “ON” and “OFF” to the lights. Follow the procedures below to set the Hydro and CO2 timers correctly.
HYDROPONICS TIMERS
The Hydroponic outlet can be configured to cycle one of two ways… 24-hours a day or, during the “daytime” only. Simply moving the Hydro Mode selector switch to either the “24-Hour” or the “Daytime” position enables the desired mode. When used in the Daytime” mode, the Hydro outlet will only cycle while the lights are on. The “24-hour” mode works great for NFT or aeroponic systems that require moisture during the day and night. The mode selector switch also doubles as a Hydro bypass switch. Each time the switch position is changed, the hydro timers will reset and initiate a new cycle. This comes in handy during set-up of the hydro pumps and timer settings.
There are two timers that control the hydroponics receptacle, Hydro “ON” and Hydro “OFF”. The CGC-1e’s Hydro “ON” time can be set from 1 second to 40 minutes; the Hydro “OFF” time can be set from 1 minute to 8 hours. Set the timers by moving the dial to the appropriate position.
CO2 TIMERS
The CGC-1e controller also provides an integrated timed CO2 control system. As with all of CAP’s greenhouse and CO2 controllers, a thermostat and a de-humistat are used to interrupt CO2 use if the temperature or humidity rises above the preset level. The CO2 is also disabled at “night” by the 24-hour timeclock.
During the “day”, the CGC-1e controls your CO2 valve or generator by turning the CO2 outlet on for a certain amount of time and then off for a pre-determined amount of time, repeatable +/- 2%.
The CO2 Inject timer or “ON” time can be set from 1 second to 40 minutes. The CO2 inject frequency timer or “OFF” time can be set from 1 minute to 8 hours. This provides a great deal of flexibility and control options.
For more detailed information about the CO2 timers and sequence, refer to the CO2 Control section of this manual.