Thermo Scientific SHKE8000 Series, Maintenance Manual

Page: 70 / 106

Alarm Message
Alarm Criteria
Alarm Delay*
Alarm
Ringback*
System State
Corrective
Action
Electrical power has been disrupted
Upon
power up
15 min. None
Alarm light on Audible alarm on Blower fans on Shaker motor on Heaters on Not af
fected
Press
to silence the audible alarm
Check if lid is completely closed Check temperature tracking limit Check sensor circuit Replace main temperature sensor Call
SILENCE
T
echnical Services Department
W
arning notice only
Press
to silence the audible alarm
SILENCE
T
emperature is Low
Power Failure
T
emperature is above the control system’
s
temperature tracking limit
*
Alarm Delay and Ringback times are approximate
**
A
3.5
hour
time delay
is built into
the
system
to
allow
the
shaker to
reach
the
temperature setpoint.
When
this
point
is reached,
a 20
minute delay
becomes ef
fective.
When
the
lid
is opened, a 15
minute interval is added
to
allow
the
system
to
recover
to
the
set temperature. (Note:
All times are approximate)
Count-down time has reached zero RPM is above control set point by
tracking limit
RPM is below control set point by
tracking limit
None
2 min.
2 min.
None
15 min. 15 min.
Alarm light on Audible alarm on Blower fans on Shaker motor of
f
Heaters on Alarm light on Audible alarm on Blower fans on Shaker motor on Heaters on Alarm light on Audible alarm on Blower fans on Shaker motor on Heaters on
Advisory notice only Press
to silence the alarm
SILENCE
Press
to silence the audible alarm
Check platform loading Check RPM tracking limit setting Shut the unit of
f and call
Department
SILENCE
T
echnical Services
Press
to silence the audible alarm
Check for overloaded platform Check for obstruction to edges of platform Check for low input
AC mains voltage
Shut the unit of
f and call
SILENCE
T
echnical Services
Cycle Complete RPM High RPM Low
Department
* *