High Country Tek HAU Series - Manual (Page 3)

HAU Product Manual
High Country Tek, Inc.
208 Gold Flat Court
Nevada City, CA, 95959.
Tel:- (1) 530 265 3236
www.hctcontrols.com 021-00140_HAU_User_Guide_Rev_Bp2 3/10
Setup Procedure:
Compare the part number on your unit to the Part Number Index in Figure 1 for an explanation of options
specific to your unit.
This controller is best adjusted by observing the system response.
Coil current can be used, but coil voltage is not accurate.
INITIAL SETUP:
1. Turn the MAX pot 10 turns CCW then 5 turns CW (set to center of pot)
2. Turn the MIN pot 10 turns CCW (off)
3. Turn all RAMP pots 10 turns CCW (off)
4. Turn the DITHER AMP pot 10 turns CCW (off)
MAX / MIN:
1. Turn on power supply.
2. Set the control input to its minimum and adjust the MIN pot for the desired response. CW for
more current, CCW for less. Set the control input to its maximum and adjust the MAX pot for the
desired maximum desired response. Do not adjust the unit for more current then is required to
fully shift the valve; this reduces the useful range of the controller and may harm the coil.
3. The Min and MAX pots interact with each other and system response may change as the system
warms up. Warm the system to normal operating temperatures and repeat steps 2 and 3 until
both the MIN and MAX pots are adjusted properly.