System Check - Hydrofarm ACTIVE AIR COSYS Manual Del Usuario

low the CO to flow too fast. This can cause freezing of the regulator and will void the warranty.
2
If the psi (pounds per square inch) gauge doesn't read between 20 and 30 psi when the regulator is securely
attached and set up, and the tank is full, adjustment will be necessary. Remove the green "CO2" sticker on the front
of the unit (if applicable). Adjust the bolt found under the sticker until the gauge reads between 20 and 30 psi. You
will need a 4 mm (5/32") hex key or a flat head screwdriver, depending on which model you have.
SETTING THE PROGRAMMABLE TIMER
Set your timer to go on continuously for 45 minutes each day when your lights turn on. This time period will bring
your room level close to the desired range. After this period, set the timer to go off for 15 minutes, then on for 15
minutes. Repeat this on/off cycle throughout the lighted period until 1 hour before the lights turn off.
DETERMINING A FLOW RATE
This is the basic formula for determining flow meter settings:
cubic ft. of growing area x .0012 = A
To determine the flow rate for your growing area, follow the steps outlined below.
Step 1 - Determine the cubic volume of your area:
Room height x width x length = cubic volume
Example: 8' high x 10' long x 10' wide = 800 cubic feet
Step 2 - Take desired level of CO
This is the amount of CO
Step 3 - Multiply your room volume x .0012 (1200 ppm) to determine how much CO
Example: 800 cubic feet x .0012 = .96 cubic feet.
For practical purposes we will round this off to 1 cubic foot. This is the quantity of CO
size room to reach the desired 1500 ppm level.
Before continuing on to the next steps, the following assumptions need to be established:
FIRST ASSUMPTION: The average growing area enriched to 1500 ppm of CO
about 3 hours due to plant usage and room leakage.
SECOND ASSUMPTION: When calculating the flow rate for any growing area, this usage and leakage of CO
should be compensated for in that particular area.
Step 4 - Now for the 800 cubic foot room, we take the approximately 1 cubic foot of CO
the 3 hour average period into 1 hour increments. There are 3 one hour periods in 3 hours. 1 cubic foot
÷ 3 = 1/3 cubic foot of CO
This means that every hour, an 800 cubic foot room needs 1/3 (.333) cubic foot of CO
1500 ppm. Because our system operates on a 15 minute ON / 45 minute OFF cycle, the flow rate setting should
allow 0.33 cubic feet of CO
To arrive at the appropriate flow rate setting, we need to multiply 0.33 by 4 (because the flow rate is measured in
cubic feet per HOUR, but the ON period is only 15 minutes, the flow rate must be four times the amount needed)
to reach the flow rate per hour (0.33 x 4 = 1.33 CFH). For practical purposes, round this to 1.3 cubic feet. This is the
flow meter setting.
After following the regulator adjustment steps, set the flow with the flow meter adjusting knob.
SYSTEM CHECK
Once the flow rate and programmable timer have been set, test the system by plugging it in. Plug the regulator's
120 V power cord into the provided timer or connect to a CO
Controller (item APCECOD), the Autopilot Analog CO
Timer (item APCTART). After plugging in the unit, slowly rotate the timer dial clockwise to check the on/off of the
solenoid valve. Check the flow of CO
INSTRUCTIONS
A ÷ 3 = B
(1500 ppm) and SUBTRACT existing CO
2
you need to add to raise the level to optimum.
2
(.333)
2
to be emitted within each 15 minute ON cycle.
2
by using the flow meter setting.
2
B ÷ 2 = flow meter setting
control system like the Autopilot Digital CO
2
Controller (item APCECO), or the Analog 24 hour Recycling
2
: 1500 ppm - 300 ppm = 1200 ppm.
2
to add to your area.
2
to add in an 800 cubic foot
2
will return to normal levels in
2
and divide it up over
2
to replenish it back up to
2
2
2
3