Tool-Temp TT-188, Manual Of Instruction

Page: 31 / 45

Manual of instructions TT-188 31/37
11. Failure corrective action
Symbol Symptom Probable cause Correction
Green ON/OFF-switch as
well as all lamps do not
light
•
Fuse defective
•
Possibly transformer or
switch defective
•
Replace the 5 x 20 mm 1 A
fuse
•
Replace defective parts
Red lamp “thermal relay”
lights
Horn sounds
•
Overload relay of the
pump motor has
responded
•
Unit switches off (pump)
•
Possibly 2-phase
running
•
Let the motor cool down
•
Open the unit and press the
blue button of the overload
relay “
motor
”
•
Check the electrical
connection
When the motor has cooled
down the unit switches on
again.
Red lamp „temperature
monitoring“ lights and the
unit switches off
Horn sounds
•
Maximum temperature of
the unit is reached
–
thermostat has respond
•
Try to establish the cause,
maybe too low adjustment of
the thermostat
•
Check the controller
•
Check the contactors
Control lamp
“Temperature deviation
control”
lights
Horn sounds
•
Temperature deviation
between required and
actual temperature is too
big
•
Check heating contactors
and heating resistor
•
Check the cooling
„Flow control“ lights
Horn sounds
•
Too low flow in the unit
•
Flow has changed down
•
Check heat transfer circuit
•
Event. remove fast couplings
•
The alarm can be reset by
pressing the flow control
button on the controller.
•
In automatic mode the lower
flow value will automatically
be taken over as new pre-
set flow value.