Thermo Products USDT2004 - Manual (Page 6)

6
ower Connections: A small blade screwdriver may be used to fasten miniaturized
terminal block screws while the corresponding wire is inserted.
NOTE 1: Always disconnect the controller from power supply before opening the housing.
NOTE 2: The controller should be properly grounded. Flexible wires, 18/3 AWG
(gauge/conductor) simplify connection to the terminals. The power terminal block will
accommodate wire sizes to 14 AWG. All other connections should be secured and adequately
tightened, as loose power connections will over-heat, and may cause fire.
NOTE 3: It is important that the specified output loads (245 Watts) are not exceeded. Where
these loads expect to exceed, external relays must be used. It is good practice to install a switch
to disconnect the controller and pump from power. Always keep power cables away from sensor
cables and other low voltage signal cables.
NOTE 4: To protect against lightning damage, the system must be grounded according local
regulation. Sensor failures due to the weather or electrostatic are mostly due to poor grounding.
our controller displays requested information one at a time. The unit display window
has three lines to inform you about the system's status, unit of displayed parameter
and its value.
Upper Line Display Symbolic display of sensor location, reading unit, and operation domain
Center Line Display Sensor ID and its reading in normal mode (user interface window)
Lower Line Display Set-point indicator that illuminates only during programming mode
ð Push selection key once to move to the next selection; or increase the selected
parameter by one unit.
ï Push selection key once to move to the previous selection; or decrease the selected
parameter by one unit.
ò Push selection key once to enter the advanced (Par or *Men) mode. Once in selected
mode, press one more time to select the parameter in that mode. Selected parameter
blinks allowing the user to modify it. You can modify the selected parameter while the
middle window blinks by pressing the
ï or ð key.
ñ Push selection key once to accept selection (blinking stops showing the new set-point
steady) or go back to the previous selection.
*
Menmode is for use in advanced applications only. See P.9.
P
Y