OPERATION
46
➢ Energize the compressor. However, be sure to check if the compressor turns in right direction. The
compressor turning direction should be absolutely checked in start-up. Remove any
necessary covers.
➢ Visually inspect coupling, and press the “Start” button, and let the compressor works for a short time
(1-2 sec), and then immediately press the “Emergency Stop” button to shut down the compressor.
It should turn in the arrow direction when looking from the screw shaft side (see arrow direction just
above the screw).
➢ If the turning direction is correct, thoroughly open the compressor output valve, and restart the
compressor.
➢ Shut down the valve at the air tank outlet to fill up the tank.
➢ Check the pressure raise on the compressor control unit display or on the gauge on the control
panel.
➢ Check if the pressure reaches the preset value, and the compressor is set in idle position.
➢ If the air pressure in the tank does not reduce, the compressor would automatically stop a certain
time after its start up in idle position. Wait for a few minutes, and then open the tank
outlet valve to check the compressor switches into the load position at the preset pressure
value.
➢ 10-15 minutes later, check the operating temperature of the compressor, and be sure that it is
normal 176-194°F (80-90°C). Stop the compressor, and de-energize it, and visually inspect the
internal parts and components of the compressor. This check is important against any possible oil
leak or loosening.
➢ Your compressor has undergone an overall functioning and safety test in operating condition. The
initial checks aim at preventing any possible damage on the compressor in transit or during
installation. If you do not detect any problem at the end of all the checks, you can start up the
compressor.
7.4 Daily Start Procedure
You can perform a few simple daily checks before starting up the compressor under normal
conditions. The daily maintenance procedure is described in detail in the 9th chapter.
➢ Check if there is any failure signal on the compressor panel.
➢ Inspect the internal parts and components for oil leaks or any possible damages.
➢ Start up the compressor, and monitor its operation for a short time.
➢ Check the front panel to see that there is no failure sign, and that the operating pressure and
temperature values are normal.
➢ When the compressor works under load, see the oil flow in the separator and oil return line
(scavenge).
As such simple checks would allow you early detect any possible errors and failures on the
compressor, you would not suffer any time loss due to unnecessary shutdowns for failure.
To Next Page
