Section III - Controller
Quincy Compressor
15
starting frequency and several other parameters are hereby taken into account.
The controller stops the compressor whenever possible to reduce the power
consumption and restarts it automatically when the net pressure decreases.
CAUTION!
A number of time based automatic start/stop commands can be programmed. Take
into account that a start command will be executed (if programmed and activated),
even after manually stopping the compressor.
Protecting the compressor
Shutdown
Several sensors are provided on the compressor. If one of the measured signals exceeds
the programmed shutdown level, the compressor will be stopped. This will be indicated
on display (1) and general alarm LED (2) will blink.
Remedy the trouble and reset the message. See also section Inputs menu.
CAUTION!
Before remedying, consult the applicable safety precautions.
Shutdown warning / shutdown
If the compressor element temperature exceeds the factory set warning level, the
compressor element will be stopped for a short time and a warning will appear on the
controller display (1) and the general alarm LED (2) will light up.
In case of repetitive stops due to a too high temperature, a manual reset will be
necessary before restarting the compressor.
The compressor will also be stopped when the motor is overloaded.
A warning message will also appear if, on compressors with integrated dryer, the dew
point temperature is too high in relation to the ambient temperature.
Service warning
A number of service operations are grouped (called Service Plans). Each Service Plan
has a programmed time interval. If a time interval is exceeded, a message will appear on
display (1) to warn the operator to carry out the service actions belonging to that Service
Plan.
The running hours will be recalculated with respect to the ambient temperature. This
algorithm is activated when the compressor is operated above 30 °C (86 °F) ambient.
Automatic restart after voltage failure
The controller has a built-in function to automatically restart the compressor when the
voltage is restored after voltage failure. For compressors leaving the factory, this function
is made inactive. If desired, the function can be activated.
Consult your supplier if a change is considered (password protected function).
