Tuttnauer ELARA11-D, Technicial Manual

Page: 132 / 176

Page 131
Symptoms
Possible causes Check-
ups and tests
Corrective Action
High temp
During 'Sterilization' stage,
the chamber temperature
goes above the value
defined in parameter
'Sterilization Temperature' +
value of parameter
'Sterilization temperature
Range'.
Possible causes:
1.
Heating elements go
on working beyond the
required time.
2.
Faulty SSR or Analog
board. 3. Faulty
calibration of temp.,
pressure or faulty sensors of
temp and/or pressure.
If the problem persists, perform
the following with SSR, Analog
board, and temp/pressure
sensors:
a.
Test
b.
If this doesn’t help,
recalibrate.
c.
If this doesn’t help, replace.
Low Temp
During 'Sterilization' stage,
the temperature drops for
more than 1 second below
the sterilization temperature.
Possible causes:
1.
Door gasket is
leaking.
2.
Heating elements
(even one of them) do not
work.
3.
Faulty SSR or Analog
board.
4.
Faulty calibration of
temperature and pressure
sensors.
5.
Faulty temperature or
pressure sensors.
6.
Overloaded chamber
First, perform a new cycle (make
sure not to overload the
chamber). If the problem persists:
1
Replace the door gasket.
2. Recalibrate the
temperature and pressure
sensors.
2
Fix connection. If this
doesn’t help, replace faulty
temperature sensors, pressure
sensors,.SSR or Analog board.
High pressure
During 'Sterilization' stage,
the chamber pressure goes
above the value of
'Sterilization Pressure' plus
the value of parameter
'Sterilization pressure
Range'. The 'Sterilization
Pressure' value is calculated
according to parameter
'Sterilization Temperature'
using a predefined lookup
table.
Possible causes: If the problem persists, perform
the following with SSR, Analog
board, and temp/pressure
sensors:
a.
Test
b.
If this doesn’t help,
recalibrate.
c.
If this doesn’t help, replace.
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