Download Mercoid MPC Jr Level Controller Manual PDF

DIAGNOSTIC ERROR MESSAGES
DISPLAY
MEANING
SP OUTPUTS
UFL
or
OFL
Underflow or
Overflow: Process
value has
exceeded input
range ends.
Set point
outputs active
Alarms active
Check calibration
appears as an
alternating
message if the
instrument
calibration nears
tolerance edges.
Set point
outputs active
Alarms active
Check calibration
appears as a
flashing message
if the instrument
calibration
exceeds
specification.
Set point
outputs
inactive
Alarms active
Remove the instrument
for service and / or
recalibration. To reset use
the INDEX & ENTER
keys.
ArEA
(Alternates
with PV)
This message
appears if the
ambient
temperature of the
control
approaches the
ends of tolerance.
Set point
outputs active
Alarm active
Correct the ambient
temperature conditions.
Ventilate the area of the
cabinet or check for
clogged filters. If RJC
broken, return to factory
for service.
ArEA
This message
appears if the
ambient
temperature of the
control is out of
range or RJC
sensor is broken.
Set point
outputs active
Alarms active
Correct the ambient
temperature conditions.
Ventilate the area of the
cabinet or check for
clogged filters. If RJC
broken, return to factory
for service.
CHEC CAL
22
ACTION REQUIRED
Input signals may
normally go above or
below range ends. If not,
check input and correct.
Remove the instrument
for service and / or
recalibration. To reset use
the INDEX & ENTER
keys.