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4. Indication of early warning for lubricating oil
The Text displays "LUBE LIFE END" when the using time of the lube terminates.
5. Indication of early warning for grease
The Text displays "GREASE LIFE END" when the using time of the grease terminates.
6. Indication of early warning for belt
The Text displays "BELT LIFE END" when the using time of the belt terminates.
7. High air temperature warning
Controller detects the air temperature high, the text display "HIGH TEMPERATURE"
7. Controller protection
1. Motor protection
MAM-870 air compressor controller provides all-round protection functions of short-circuit,
locking, phase failure, overload, imbalance for motor.
Electronic
Failure Display
failure
Short
Display failure "HOST/FAN SHORT"
circuit
Blocked
Display failure "HOST/FAN BLOCK"
Display
Overload
CARRY"
Phase
Display
failure
PHASE"
Display
Unbalance
UNBLANCE"
2. Gas Exhaust Over-temperature Protection
When the Air exhaust temperature is higher than the upper limit of set temperature, the controller
would be stopped, the display will show "HIGHT T".
3. Non-reversing Protection of Air Compressor
When three-phase supply phase sequence connected to the air compressor is not the same
with that set for the controller, the on-site failure is displayed as "PHASE REVERSAL", as a result,
the controller cannot start up the motor. Then just change any arbitrary two-phase power lines
leading to check the rotation of motor.
4. Overpressure Protection of Pressure Supply
When the gas exhaust pressure is higher than the upper limit of set pressure, the controller
would be stopped for warning, the on-site failure is displayed as "HIGH P".
failure
"HOST/FAN
failure
"HOST/FAN
failure
"HOST/FAN
Reason
Short circuit or rated current is set by
mistake
Too large load, bearing wear and other
mechanical failure
OVER
Too large load, bearing wear and other
mechanical failure
LACK
Power supply, contactor and phase
failure of motor
Poor
contact
open-loop of motor
of
contactor,
inside
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