Operating instructions

2
WIRING METHODS
Always use stranded wire when connecting cables or conductors to the actual circuit board of the control
panel. This will allow flexibility. Use no smaller than #18 gauge stranded wire for all outputs. Use no smaller
than the recommended wire size of stranded cable for inputs, generally #22 gauge.
SENSOR CONDUCTORS: Route sensor conductors separately from control conductors. This is very
important so as to reduce electrical interference. Never route sensor conductors in conduits used for other
voltages. This is in violation of the electrical code and will cause dangerous interference to the control system.
Always locate the actual sensor in the center of the range that is being controlled for accurate readings. Do
not allow the sensor to come in contact with any greenhouse structure member such as a post that would give
off any radiated heat and cause a false temperature reading. Do not locate the sensor where a particular
piece of equipment would cause false readings, such as a heater blowing directly on the sensor. Mount all
wind/rain sensor is a clear area, free of any wind obstructions.
CONTROL CONDUCTORS: Route all control conductors separately from sensor conductors. This is very
important so as to reduce electrical interference. Control conductors maybe routed in conduits that contain
other power system wiring only if the insulation material on the conductors is the same as the power system
wiring. Consult the national electrical code or local codes if in doubt about the insulation ratings of the wire in
use. Remember; always use a qualified and licensed electrician.
VENT SYSTEMS, SHADE SYSTEMS, ROLL UP CURTAINS
When connecting a vent system, shade system, or roll up curtain ventilation system to the control panel, you
must use a separate control box designed for that particular vent or shade system. These are readily
available from Micro Grow Greenhouse Systems, Inc. Generally these separate control boxes feature
overcurrent protection for the particular motor on the vent or shade system, provisions for direct limit switch
connections, and a manual means of operating the vent or shade system independent of the main control
system. These separate control boxes will connect the main control system either directly through the outputs
of the control system, or they will require control relays for interconnection to the main control system. Consult
the individual instructions that come with the vent or shade controls for detailed information.
SYSTEM TESTING
It is always important to completely and fully test the electrical system by energizing circuits and verifying
equipment operations before automatically operating the equipment from the control panel. This would
include setting all of the vent and shade limit switches at the individual control panels.