Sullair SRL-7.5MB User Manual page 34

02250236-267 R02
Troubleshooting (continued)
Digital Display Error and Alarm Indications (Default function)
Digital Display Display Error/Alarm Description
High ambient temperature
A.THI
alarm
Maintenance alarm
A.nnT
Scroll head maintenance
alarm
A.OH Overhaul alarm
E.CPU Microcomputer error
Air compressor high pressure
E.Pr.H
error
E.Pr.S Pressure sensor error
Air compressor high pressure
E.Pr.E
emergency stop error
Phase reversal error
E.rE
Damage to reversal phase
wiring
_
Upper main motor thermal
E.Co.
overload error
_
Middle main motor thermal
E.Co.
overload error
_
Lower main motor thermal
E.Co.
overload error
_ _
A l l m a i n m o t o r s t h e r m a l
E.Co.
overload error (7.5/11MB6)
_ _
_
A l l m a i n m o t o r s t h e r m a l
E.Co.
overload error (16.5MB6)
High ambient temperature
E.TP.A
error
_
U p p e r s c r o l l h e a d h i g h
E.TP.
temperature error
Subject to EAR, ECCN EAR99 and related export control restrictions.
Verify that the ambient temperature is below 104°F
(40°C) and reset the air compressor. If the error
re-occurs and the ambient temperature is below
104°F (40°C), contact the local Sullair distributor.
This alarm is displayed when the total operating
hours exceed 2,500 hours. Carry out inspection
and maintenance of the air compressor.
This alarm is displayed when the total operating
hours exceed 9,500 hours (145PSIG Model
: 4 , 5 0 0 h o u r s ) . C a r r y o u t i n s p e c t i o n a n d
maintenance of the scroll head.
This alarm is displayed when the total operating
hours exceed between 19,000 to 19,500 hours
(145PSIG Model : between 13,500 to 14,500
hours). Carry out overhaul of the Scroll Head.
Turn off the main power supply to reset the air
compressor and turn the power back on. If the
error re-occurs, replace the Printed Circuit Board.
(Contact the local Sullair distributor.)
The Electromagnetic Contactor, Printed Circuit
Board, Pressure Sensor or another electrical
component has failed. Contact the local Sullair
distributor.
Tighten the pressure sensor wire and reset the
air compressor. If the error re-occurs, replace the
pressure sensor (Please contact the local Sullair
distributor).
The Printed Circuit Board has failed. Contact
the local Sullair distributor to replace the Printed
Circuit Board.
Change two of the three incoming power cables.
Confirm that there is no disconnection or damage
to the phase reversal wiring. If the error re-occurs,
contact the local Sullair distributor.
Please contact the local Sullair distributor to
eliminate the probable cause and reset the main
motor thermal overload error.
Verify that the ambient temperature is below
104°F (40°C). Turn off the main power supply
to reset the air compressor and turn the power
back on. If the error re-occurs and the ambient
temperature is below 104°F (40°C), contact the
local Sullair distributor.
30
Corrective Action