Product Manual

5.10
Installation and operation
5.3.1 Safety system and interlocking
device
5.3.1.1 Discharge temperature sensor
This sensor enables the dryer to shut down the
compressor if the discharge oil temperature mixture
reaches a preset value of 230°F (110°C) ± 41°F (5°C). It
resides on the airend outlet cover or the receiver tank.
5.3.1.2 Minimum pressure valve
This valve resides at the outlet of the oil separator and
maintains a minimum receiver tank pressure of about 58
psi. It facilitates proper air and oil separation, and oil
circulation to the airend.
5.3.1.3 Pressure relief valve
The pressure relief valve relives pressure in the oil
receiver tank when working pressure exceeds 217psi g
(15 bar).
5.3.1.4 Overload relays for main motor
and fan motor
These relays reside on the electrical control panel. They
ensure that the compressor shuts off when power
consumption exceeds a set value.
5.3.2 Operation control system
Perform these tasks before staring the compressor:
 Fill oil in the tank as per the oil filling procedure.
 Open all the doors and visually check the machine for
suitable operation.
 Open the electrical panel at the front of the compressor
and check whether the three phases with earth PE are
connected securely.
 Check the necessary grounding line in the band/
compressor base.
 Ensure that you commission the machine only in closed
atmosphere air and on a level surface.
 Provide a clearance space of 3ft (1m) around the
compressor.
 The machine should be commissioned on a levelled
surface.
 Use only the recommended input cable size and fuse for
the machine.
 Connect the correct cable size to the machine wings.
 For input power supply conditions, refer to 5.1.6.
5.3.3 Starting the equipment
Press the start button and check the direction of rotation
of the end pulley.
5.3.4 Starting and normal operation
mode
When you switch on the machine, the motor runs in DOL/
star delta mode. Within a few seconds, the inlet valve
opens and the compressor starts loading.
5.3.5 Unloading mode
After reaching the maximum cut-out pressure, the
pressure sensor estimates the pressure and cuts off the
solenoid electrical supply. At this stage, the blow down
valve unloads the separator tank and the compressor
starts to run in energy saving mode.
When the compressor runs continuously unloaded for 5
minutes in energy saving mode, it shifts to rest mode.
Unless the demand for air increases, the machine does not
restart. When air pressure falls, the compressor
automatically starts loading.
5.3.6 Stopping
Press the STOP button (red) on the controller to stop the
compressor.
5.3.7 Changing the compressor
settings
Change the compressor settings using the tactile keypad
and LCD panel on the controller. (Refer to the Neuron
manual for details on the control panel and interpretation
of the message.)
Operating instructions 5.3