General; Explanations - Hertz HSC serie Bedienungshandbuch

CHAPTER 5

5.1 GENERAL

In order to enable you to easily see the operation and adjustment values of the compressor, an electronic
controller unit is installed to the system. The electrical and mechanical precautions have been taken for
establishing of operational safety. Some of the equipments of the compressor are described below for your
information.
5.2 FUNCTION EXPLANATIONS
CONTROLLER UNIT
You can find operation and adjustment data related to control panel in enclosed booklet numbered 2.
EMERGENCY STOP BUTTON Press this for stopping the compressor in case of emergency. It is designed to
PRESSURE GAUGE
PRESSURE TRANSDUCER
TEMPERATURE SENSOR
PRESSURE SWITCH
SAFETY VALVE
MINIMUM PRESSURE VALVE It provides the pressure remain at 3,5-4 bars in the separator tank. In addition
CONTROL SOLENOID VALVE When the compressor reaches to adjusted pressure values, it controls the air
BLOWDOWN SOL.VALVE
THERMAL VALVE
AIR FILTER ΔP SWITCH
5.3 START UP
Before start up the compressor, check the electrical and air line connections.
Check that the compressor's cooling air inlets and outlets are not closed. Do not cover your compressor
with cloth, nylon etc. Do not operate if covered.
Inside electrical panel of your compressor there is a "phase control relay" that continuously checks the
electrical phase. In case the phases are connected in wrong order and if there is unbalance or
interruption in your voltage, the phase control relay will prevent operation of the compressor. In this
case, a signal behind the control panel that indicates the phase error warns you. When the phases are
connected reverse, switch off the energy and switch the position of main cables of the compressor. In
case of interruption or phase unbalance, as this problem is related with the network contact an
electrician or related institution.
OPERATION
It is an electronic unit that all adjustments are made and failures and
maintenance hours are traced
remain locked when the button is depressed. For unlocking the button slowly
rotate it in counterclockwise.
Indicates the pressure.
It converts pressure data into binary format by electronically way and informs
the controller unit.
It converts temperature data into resistance value and informs the controller
unit.
In case of any failure to increase system pressure than the settings it shutdown
the compressor.
When the pressure in tank increased very high in case of failure, it releases the
pressure and establishes safety.
in case of idle operation and switching of compressor; it prevents the system
pressure to penetrate back to the separator tank.
that goes to intake valve and makes the compressor operate at unload.
When the compressor is stopped; it establishes safety by discharging the
pressure in separator tank.
In cold ambient condition, oil temperature and viscosity affected this situation.
Thermal valve blocks the oil cooler and circulate the oil between the separator
tank and air end unit. When the oil temperature reaches ~65°C thermal valve
allow the oil passing oil cooler. In the same time it prevents
condensation in oil.
If the intake filter getting clogged, compressor intake capacity reduces and also
working temperature will increase. When the intake filter clogged air filter ΔP
switch makes contact and controller unit inform the user for the failure.
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