Hired-Hand Farm Hand Series: Vent Master 16 Stage - Manual (Page 16)

Part No. 4801-5098 Farm Hand Vent Master 13
9.7 Cool Timer Settings (ON/OFF Stages Only)
The following two settings allow the user to set the Runtime range for their cool timer stages.
These settings apply to the cool timers on the On/Off stages only.
P70 = Cool Timer Maximum Percentage
This sets the maximum Runtime percentage that a cool timer stage can operate.
P71 = Cool Timer Minimum Percentage
This sets the minimum Runtime percentage that a cool timer stage can operate.
9.8 Sensor Calibration
The Vent Master has four sensors that may be calibrated. The parameter(s) for calibration are
PSx with x being the sensor number. The sensor temperature reading is alternately displayed
along with the parameter number. You should never attempt to calibrate a sensor more than 8
degrees. If you have a setting that far out of range, it indicates that there is a problem that should
be corrected.
PS1 - Calibrate Sensor 1
This reading can be changed by pressing the + or - button until the desired
reading is displayed.
PS2 - Calibrate Sensor 2
This reading can be changed by pressing the + or - button until the desired
reading is displayed.
PS3 - Calibrate Sensor 3
This reading can be changed by pressing the + or - button until the desired
reading is displayed.
PS4 - Calibrate Sensor 4
This reading can be changed by pressing the + or - button until the desired
reading is displayed.
10. Rarely Changed Settings
Settings which are rarely, or never, changed are found on two banks of switches located inside the front
panel of the controller. The left hand bank of switches is for Tunnel Control, and the right hand bank of
switches controls the status of the controller. When a switch is up it is ON, when a switch is down it is
OFF. The functions of the switches are as follows:
HIRED-HAND R
V FAN IN V FAN OUT
# 1
Farm Hand Vent Master
Tunnel Switch Bank
Status Switch Bank