Barnstead 47900 Operation Manual page 25

8 S & 4 16 S P M /OTP
EGMENT X EGMENT ROGRAMMABLE ODELS W
LCr: load current low alarm.
HCr: load current high alarm.
S.br: Sensor break: check that sensor is con-
nected correctly.
L.br: Loop Break: Check that the heating cir-
cuits are working properly.
Ld.F: Heater Circuit Fault: indication of either
an open or short solid sate relay, a blown
fuse, missing supply or open circuit heater.
SSr.F: Solid state relay failure indications in a
solid state relay: indicates either an open or
short circuit in the SSR.
Htr.F: Heater failure: Indication that there is a
fault in the heating circuit: indicates either a
blown fuse, missing supply or open circuit
heater.
Sensor Break Protection
This controller provides sensor break protec-
tion in the event the thermocouple opens. If
an open thermocouple condition occurs, the
digital display will Blink "S.br" and the power
to the heating element will be shut OFF
(Cycle light will extinguish).
Over-Temperature Protection
(OTP)
The OTP will be in effect during any alarm
condition when the temperature of the furnace
has deviated beyond the limit. The "Deviation
25