Model FF-2500 Proportioning Unit
16
25942-1, Issue 4
Temperature Controllers
The FF-2500 digital temperature controllers automatically maintain the temperature
selected for both the hose heat system and primary heater. Each controller has its own
program and is not interchangeable with the other. (See Figure 6.)
To enter the set point, proceed as follows:
WARNING: DO NOT
TURN THE TEMPERATURE CONTROLLER ON UNTIL ALL PURGING
PROCEDURES ARE COMPLETED AND THE HEATERS COMPLETELY FILLED WITH CHEMICAL
.
A
DDITIONALLY
, DO NOT
CHANGE ANY OF THE PREPROGRAMMED PARAMETERS
.
a) Check that the red main disconnect is ON. The white pilot light should be lit.
b) Check that the amber control
power switch is ON. The light
within the switch should be lit.
NOTE:
The temperature controller
normally displays the set point.
When illuminated, the red LED
number 1 on the temperature
controller indicates that the heater
is in heating mode. The LED goes
out when the liquid in the heater
reaches the set temperature. The
LED will continue to cycle on and
off, indicating that the controller is
maintaining the set point
temperature.
c) To enter or change the set point,
press and hold the “Set” button
down while pressing the
or
button to increase or decrease
the value. After entering the set
point release the “Set” button and
the set point should display after
10 seconds.
Figure 6. Temperature Controller
WARNING:
T
HE CONTROLLERS ARE FACTORY PROGRAMMED AND ARE NOT FIELD
PROGRAMMABLE
. I
F YOU ENCOUNTER ANY PROBLEMS WITH EITHER CONTROLLER CONTACT
G
USMER FOR A REPLACEMENT
. D
O NOT SUBSTITUTE A CONTROLLER FROM AN ALTERNATE
SUPPLIER AS ITS USE MAY RESULT IN DAMAGE TO THE EQUIPMENT AND
/
OR BODILY INJURY
.
