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TIMERS
OVERVIEW
The CGC-1e uses 2 digital timers to control the hydroponics and CO
2
functions. One of the timers control the
hydroponics pump frequency and duration, and the other one determines CO
2
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 CO
2
timers and restart the CO
2
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 CO
2
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 CO
2
control system. As with all of CAP’s greenhouse and CO
2
controllers, a thermostat and a de-humistat are used to interrupt CO2 use if the temperature or humidity rises above the preset
level. The CO
2
is also disabled at “night” by the 24-hour timeclock.
During the “day”, the CGC-1e controls your CO
2
valve or generator by turning the CO
2
outlet on for a certain amount of time
and then off for a pre-determined amount of time, repe/- 2%.
The CO
2
Inject timer or “ON” time can be set from 1 second to 40 minutes. The CO
2
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 CO
2
timers and sequence, refer to the CO
2
Control section of this manual.
