Rotair RVK 25 User manual

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RVK
[ ] RVK 25
[ ] RVK 30
[ ] RVK 40
Via Bernezzo 67 – 12023 CARAGLIO (CN) –ITALIA
TLF: [phone] – FAX: [phone]
E-MAIL: [email protected]
http://www.rotairspa.com
MAN RVK 25-40 S1 ING 21-07-08 rev 01

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ROTAIR S.p.A.
Via Bernezzo 67 – 12023 CARAGLIO (CN) –ITALIA
TEL: [phone] – FAX: [phone]
E-MAIL: [email protected] http://www.rotairspa.com
The reproduction, copying, divulgement, or stored memorization of any parts of the present manual is
forbidden without the written authorization of ROTAIR. The illustrations, descriptions references and
technical data container in the present manual are purely for reference purposes only and are not binding.
ROTAIR reserves the right to undertaken and make, without prior warning, all the modifications that it
considers as necessary, as part of its ongoing policy of quality and safety improvement, without actually
revising the manual itself.
Stamp of the retailer of authorized service centre

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-- 1) SUBJET INDEX --
1. Identification data
2. Technical data
3. The purpose of the manual and who it is to be consulted by
4. Envisage machine used
5. Technical description
6. Control instrument and devices
7. Electronic card description
8. Machine installation
9. Machine used instruction
10. Safety devices
11. Program maintenance
12. Checking and maintenance
ATTENTION!
The failure to follow or apply the instructions or regulations indicated in the present manual with
result in the annulment of any kind of guarantee rights on the compressor and will relieve the
manufacturer from any kind of liability as the result of damage to either persons or things, as the
result of the incorrect use of the machine or inadequate/non existent maintenance

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-- 1) IDENTIFICATION DATA --
Here follows details of the information printed on the machine identification plate situated at the front of the
machine.
MODEL: RVK
REGISTRATION NO.:
MASS (Kg):
AIR DELIVERY (litres per minute) * :
WORKING PRESSURE (bar):
YEAR OF CONSTRUCTION:
ACOUSTIC POWER dB(A) ** : < 100
(*)Measured in accordance with ISO 1217 standards (±5%).
(**)Measured in accordance with directive CEE 84/533, technical adaptation 85/406/CEE.
CAUTION:
The use of non-original ROTAIR S.P.A. spares will result in the immediate cancellation of the
guarantee.
On requesting assistance or ordering of parts always cite the model number and registration number above.

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-- 2) TECHNICAL DATA –
-- OIL SYSTEM CAPACITY: 5 litres
(*) Q8 SCHUBERT 46 oil is recommended.
Similar types permitted: DICREA 46 AGIP
COMPRESSOR OIL 46 API
ENERGOL RC-R 46 BP.
COMPRESSOR 46 ERG.
RARUS425 MOBIL.
LRCCW46 ROLOIL.
CORENA D 46 SHELL
DACNISVS46 TOTAL.
For all other information, regarding the motor, consult the use and maintenance booklet of the manufacturer
itself, enclosed with this documentation.
COMPLETE MACHINE:
-- MAX. ENVIRONMENTAL TEMPERATURE: 40 °C
Motor Motor Air output Air output
Model rated rated ISO 1217 ISO 1217 Frequency Pressure Pressure
power power
kW HP lt/min. cfm Hz bar psi
RVK 25-8 18,5 25 3100 110 50 8 114
RVK 25-10 18,5 25 2700 96 50 10 143
RVK 25-12 18,5 25 2300 81 50 12 175
RVK 30-8 22 30 3700 131 50 8 114
RVK 30-10 22 30 3200 113 50 10 143
RVK 40-8 30 40 4900 173 50 8 114
RVK 40-10 30 40 4150 147 50 10 143
RVK 25-100 18,5 25 3692 130 60 7 100
RVK 25-125 18,5 25 3263 115 60 8,75 125
RVK 25-150 18,5 25 2967 105 60 10,5 150
RVK 30-100 22 30 4431 156 60 7 100
RVK 30-125 22 30 3916 138 60 8,75 125
RVK 30-150 22 30 3561 125 60 10,5 150
RVK 40-100 30 40 5744 203 60 7 100
RVK 40-125 30 40 5076 179 60 8,75 125
RVK 40-150 30 40 4616 163 60 10,5 150

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-- 3) THE PURPOSE OF THE MANUAL AND WHO IT IS TO BE CONSULTED BY -
The owner, user and maintenance technician must carefully study the manual to ensure that it is used for
the purposes for which it has been designed and constructed.
It is essential that all the information contained in this manual are applied, in order to ensure optimum use of
the machine under the safest conditions.
The correct and careful use of the machine in accordance with the instructions contained in this manual, will
ensure the long life of the machine, and will also enable the personnel to prevent the risk of any accidents or
injury during work.
This manual must be careful conserved, in its special case, away from any humidity, heat and sun's rays, to
ensure that it is ready for consultation at any time, both by the operational personnel and the maintenance
staff.
It is important to ensure that the special maintenance operations in particular are undertaken by specialized
personnel.
In the event of loss or damage of this manual, ROTAIR S.P.A. must be asked for a copy, citing the relative
machine identification details as shown on the plate on the machine.
Should the plate become illegible, use the details quoted on the invoice on requesting a new manual.
Further information or instructions for use or relating to any further interventions necessary on the machine
can be request ROTAIR S.P.A. directly, always citing the machine identification details.
This machine has been exclusively designed and built to supply compressed air in the conditions as
envisaged by the manufacturer. Any other use not envisaged in this description will be considered as being
"non conforming" and will release the manufacturer from any further responsibility which will fully that of the
user itself.
“Conforming use" presupposes the observance of the following regulations concerning the use, maintenance
and transport of the unit itself.
It is also necessary to ensure that all the accident prevention regulations hereby described are followed, also
in accordance with general safety regulations as indicated in the current legislation.
The constructor declines any responsibility in the event of any modifications made to the machine without its
authorization.
The machine is supplied complete with the following documents:
1) - General use and maintenance booklet;
2) - Motor use and maintenance booklet;
3) - Certificate of conformity of the safety valves of the oil separator tank;
4) - Compressor guarantee certificate.
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-- 4) ENVISAGED MACHINE USE --
The RVK compressor is a machine which generated a well-defined quantity of compressed air measures in
litres per minute.
There are many field of application for the use of all those tools, accessories and implements which have a
"pneumatic" function.
Each instrument has a compressed air consumption measured in litres per minute.
The best ratio between compressor and tool is when the compressed air consumption of this last does not
exceed 85% of the air generated by the compressor (also bear in mind that the quantity of compressed air
requested by the tool, will increase in proportion to the wear of the tool itself).
A correct compressor-tool ratio will ensure that the machine operates efficiently and will guarantee maximum
performance.
If the tool is too big it will jeopardise the correct function of the machine, and its performance will be
impaired, not having the necessary amount of compressed air.
This machine has been designed to work at an environmental temperature of between +1 and +40°C.

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The compressed air generated by this unit contains minute traces of oil and it is therefore not
suited to use in those systems that require totally oil-free air (i.e. food industry, pharmaceutical industry, flour
and powder transport, etc...).
GENERAL PRECAUTIONS
1. The machine owner is responsible for ensuring that the compressor is maintained in such conditions
as to ensure totally safe operation. Any parts or accessories which fail to guarantee safe function are
to be replaced.
2. Use only the oils and lubricants recommended or approved by ROTAIR S.p.A. and the engine
manufacturer. Ensure that the selected lubricants comply with all current safety provisions,
particularly as regards explosion or fire risks, and the hazard of the decomposition or production of
harmful gases.
3. The supervisor or the responsible party must ensure that all the instructions concerning the function
and maintenance of both machinery and equipment are always carefully followed, and that the
machines and all the related accessories and safety instruments, comprising the entire compressed
or vacuum air system together with all the related piping, valves, connectors and hoses as well as
the expendable elements are in good conditions, that they are not excessively worn and that they
are not mishandled.
4. All maintenance, overhauling and repair operations are to be undertaken exclusively by adequately
trained staff, and supervised by a person qualified in these types of operations if necessary.
5. Maintenance operations must be undertaken only with the machine at a standstill and with the
electrical power supply disconnected by means of the switch installed by the user.
6. In the event of suspected or evident overheating of an internal machine component it is necessary to
stop the machine, but do not open any inspection hatch before the necessary cooling time has
elapsed, to prevent the risk of the spontaneous combustion of oil vapours on contact with incoming
air.
7. Before proceeding to disassemble any pressurized component, the compressor, or the machine
needs to be suitably isolated from all pressure sources and should be totally exposed to the
atmosphere. Each isolation valve must display a warning sign with the wording “work in progress: do
not open”.
8. Before proceeding with repair work it is necessary to take all the necessary precautions to prevent the
risk of sudden starting up. All the starter instruments must also bear a sign with the following wording
“work in progress. Do not start up”.
9. Never allow the machine or appliance to operate at beyond the established limits (in terms of
pressure, temperature, speed, etc..)
10. The machines and pneumatic appliances are to be kept clean , and free of oil, dust, or other
accumulated dirt.
11. To avoid the risk of the building up of excessive working temperatures, the heat transfer surfaces
must be regularly inspected and cleaned (including cooling fins, coolers and the water jackets, etc).
A suitable programmed cleaning frequency should be established for each machine.
12. All the regulation and safety instruments must be maintained with the greatest care to ensure their
correct function and they must not be placed out of use.
13. Beware of damaging the safety valves and other pressure discharging instruments, obstruction by
means of varnish, oil residue or accumulated dirt is to be avoided as it may effect the working
efficiency of the instrument.
14. The precision of the pressure and temperature indicators should be regularly checked in order to
ensure rapid replacement should the tolerance values be irregular.
15. The parts should be replaced solely using original ROTAIR S.p.A. spares.
16. Never use any inflammable solvents or carbon tetrachloride to clean the parts. Take the necessary
precautions to protect against toxic vapours when cleaning using specific chemical products.
17. Always pay the greatest care to cleanliness in all the maintenance and repair operations. Always
protect against dirt by covering the parts and exposed openings with a clean cloth, paper or
adhesive tape.
COUNTER-INDICATIONS
PRECAUTIONS

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18. During operations involving either heat, flames or sparks in a machine, the surrounding components
must be protected with non-inflammable material.
19. Never use a live flame luminous source to inspect the inside of a machine, pressure container etc.
20. Before dismantling a compressor, engine or other machine or before beginning an overhaul
operation ,avoid moving mobile parts weighting over 15 kg.
21. Once the repairs are complete ensure that no tools, cloths or components have been left inside or on
top of the machine, engine or drive elements.
PRECAUTIONS DURING USE AND FUNCTION
1. The operator must avoid compressed air outlets as the force and the speed of the air may cause
injury to those in direct contact with the air jet.
2. It is however totally prohibited to operate the machine in closed environments in which vapours or
corrosive or explosive gas mixtures exist.
3. The machine has been designed and constructed to work with bonnet lowered and therefore it must
not be kept raised with the engine running, because as well as generating high noise levels which
are harmful it would also jeopardize the necessary internal ventilation that is essential to ensure
correct compressor function.
4. Machine operation with doors open is forbidden: certain moving parts may cause personal injury.
5. The cooling fan is controlled by a thermostat and is therefore automatically operated: never remove
the protective grating!
Should it be necessary to replace the fan, undertake replacement work by disconnecting the
machine from the electricity supply and re-connect only after re-installing the protective grating.
6. Position the machine away from the walls and take all the necessary precautions to ensure that the
hot air discharged from the engine and from the cooling systems is not recycled. Should it be
conveyed back into the engine or ventilator there is a risk of machine overheating.
7. When selecting flexible hosing to connect the machine to the tool, it is important to ensure that they
are of the correct dimensions, in terms of length, the air volume involved and the working pressure.
In fact if the piping is too small in diameter or of excessive length, there is a risk of blocking the air
flow, with a loss in charge and reduced tool performance. Never use worn, damaged or faulty hoses.
8. The hosing used to convey the compressed air from the machine to the tool, or to any other
appliance that may be applied, must have a cock at one end of the hose connection, this cock
should be kept closed when connecting the hosing to the tool and the machine in order to prevent
the risk of accidental opening of the cock itself with the consequent risk of severe wobbling of the
hosing itself, and even a risk of personal injury. Before disconnecting any piping, always make sure
that there is no internal pressure.
9. Protect the ears using suitable ear-muffs, when noise output exceeds 85 dB (A). Avoid exposure to
these noise levels for extended periods of time.
SAFETY DURING MAINTENANCE AND REPAIR OPERATIONS
Maintenance and repair operations are to be undertaken solely by adequately trained staff, supervised by a
specifically trained technician in the field if necessary.
1. Use only the tools specifically suited to maintenance and repair operations.
2. Use only original spares.
3. All the standard maintenance operations aside from those of normal surveillance, are to be
undertaken only when the compressor it at a standstill. Concrete precautions should be taken to
ensure that the unit cannot be started up accidentally.
4. Before dismantling any component under pressure, isolate the unit in an appropriate manner against
all pressure sources and discharge the pressure from the entire system.
5. Always ensure that no parts, cloths or tools have been left inside or on top of the unit.
6. Do not remove or tamper with the sound-proofing material.
7. Always be sure to replace all the parts removed during maintenance operations.
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-- 5) TECHNICAL DESCRIPTION --
-- 5.1) CHASSIS AND CANOPY --
The chassis and the canopy are made of shaped and electro-welded sheet. Both parts are subject to two
painting treatments to guarantee the corrosion and rust proofness. The canopy has been planned to meet all
requirements of an ordinary and extraordinary maintenance : it is equipped with big doors on all sides to
guarantee an easy accessibility to the main parts of the machine.
-- 5.2) MOTOR --
Three-phase, 2 poles, class F insulation, IP 55 protection degree. For further technical data and operating
and maintenance instructions, please refer to the enclosed manual of the motor.
-- 5.4) COMPRESSION UNIT AND OIL SEPARATOR TANK --
It is completely manufactured in the ROTAIR S.P.A. factory and consists of a central body (cylinder) inside
which are fitted two screw rotors with asymmetric section, a male one with 5 lobes and female one with 6
lobes.
The cylinder is closed at the ends by two head sections which contain the bearings which bear the radial and
axial loads created by the air compression. A series of channels, inside the cylinder and heads, undertake to
deliver the oil to the various components. The distribution of the lubricant , serves to lubricate the bearings
and to maintain a coating of oil between the rotors and the bearings themselves as well as the internal
cylinder walls, thereby promoting compression resistance. Another important function of the oil injected
between the rotors is that of absorbing the heat generated by the air compression.
The compressed air supplied by this compressor is free of any pulsations and compression comes about
axially.
The engine and the compression unit are linked by means of a belt transmission system (chap. 5.6)
The oil tank is integrated on the same compression unit, on the lower part, as is the oil separating filter, the
minimum pressure valve, and safety valve located on the rear part of the compression unit.
A "regulator" unit is mounted on the compression unit, the purpose of which is to regulate the quantity of air
taken in according to the amount of air consumed. A double-stage filter mounted on the top of this unit
guarantees maximum purity of the suctioned air.
-- 5.5) BELT TRANSMISSION --
The motor is connected to the compressor by means of a belt transmission. The motor and compressor are
installed on a slide support which guarantees the coaxiality of the same and the perfect alignment of the
belts in relation to the pulleys. A simple pulling system ensures perfect belt tensioning.
-- 5.6) FAN AND HEAT EXCHANGER --
The required amount of electro-compressor cooling is guaranteed thanks to a fan located near the heat
exchanger. The airflow generated, which passes through the combined air-air and air-oil radiator cools the
air on exit from the compressor as well as the machine.
-- 5.7) AIR TANK --
On request the RVK compressor may be supplied with a horizontal air accumulation tank with a 270 litre
capacity and tested to C.E 87/404 standards to a pressure of 11 bar.
The tank is fitted with a safety valve and a manual discharge cock.
-- 5.8) DRYER --
On request the RVK compressor is supplied with a refrigerating cycle dryer with the following features:
- maximum air entry temperature 45 ° C
-- max. working pressure 15 bar
- pressurized dew point 3 ° C
For further information on the dryer, consult the relative user and maintenance manual enclosed.

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-- 6. ELECTRONIC CARD DESCRIPTION --
6.1 General Operation
In normal operation, the detected delivery pressure controls regulation of the compressor once the
compressor has been started by pushing the start button, or by a remote start command if enabled. The
controller will perform safety checks and start the compressor if no inhibiting conditions are detected.
If a start inhibiting condition exists the compressor will not enter the started condition and a start inhibit
message is displayed. If a run inhibiting condition exists the compressor will enter the started condition but a
main motor start is inhibited; the compressor will remain in the standby condition and a run inhibit message is
displayed. If a load request is present, in accordance with internal pressure settings or by remote command,
the main motor is started in a star/delta sequence. When running in delta configuration, after the star/delta
time (adjustable) has expired, the load delay time (adjustable) prevents loading for a period to allow motor
speed to stabilise. The load delay time can be set to one second if required. When the load delay time has
expired the load valve output is energised and the compressor will load. If the unload pressure setting is
reached, or a remote unload command is received, the load valve output is de-energised and the
compressor will run offload for the standby run on time (adjustable) before the main motor stops and the
compressor enters Standby mode. The compressor will load again if pressure falls below the load setting
before the standby run on time expires. If in Standby mode, a motor start sequence followed by the load
delay time is executed before loading.
In the event of a motor stop, initiated by a stop command or when entering standby mode, a blow down timer
(adjustable) is started. If a start request is made during the blow down time the compressor will enter standby
mode until the blow down time expires. If already in standby mode, and a load request is present, the
compressor will remain in standby mode until the blow down time has expired. For units with internal
pressure detection enabled, a minimum internal re-start pressure can also be set to prevent a motor start
sequence before internal pressure is vented. In the event internal pressure fails to fall below the set
minimum re-start pressure within two minutes after the set blow down time has expired, a blow down fault is
generated and the compressor will shutdown. After an unload event a re-load timer (adjustable) is initiated
that will prevent re-loading, this time can be adjusted to a minimum of one second if required. Normal
automated operation is ended by pushing the stop button, a remote stop command or in the event of a
shutdown fault.
When stopped manually, or by a remote command, the load value is de-energised and the main motor
allowed to run-on for the stop run on time (adjustable).
This time can be adjusted to a minimum of one second if required. Safety checks are made continuously, if
there is a condition detected that presents a hazardous or damaging situation an immediate stop is
performed and the reason displayed as a shutdown error message. If a warning condition is detected an
Alarm message is displayed and normal operation continues.
pressure
time
motor running
delivery pressure
unload pressure
START
AND
LOAD
UNLOAD STOP
load pressure
motor run
motor stop
LOAD
STANDBY
Run-On Time STOP
Run-On Time
LOAD
UNLOAD

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6.2 Machine State Diagram
Controller operational logic is shown in the machine state diagram as state blocks with an associating status
block number. The state block determines the functionality of the controller at any given time. The controller
can only be in one state at any given time. The controller will move from state to state in accordance with the
defined exit and entry conditions of each state block and the defined connections between state blocks.
Definitions:
Fault:
A detected abnormal condition that must be indicated to operator personnel and that may require controller
automated safety action, dependant on fault type and definition.
Start Inhibit Fault (S):
A start inhibit fault is a condition that may present a danger or cause damage to the compressor if started
whilst the condition is present. Start inhibit faults are only triggered if a compressor start from the ready to
start condition is attempted. Start inhibit faults are not triggered during an automated motor start sequence
from the standby condition. Start inhibit faults are self-resetting. A start inhibit fault code is displayed when
triggered but is not recorded in the fault log.
Run Inhibit Fault (R):
A run inhibit fault is a condition that may present a danger or cause damage to the compressor if the main
motor is started whilst the condition is present. Run inhibit faults are only triggered if a motor start sequence
is initiated. Run inhibit faults are self-resetting and do not prevent the compressor from entering a started
condition. A Run inhibit will hold the compressor in a standby state and will allow a motor start sequence
when the condition is no longer present. A Run inhibit fault code is displayed when triggered but is not
recorded in the fault log.
Alarm Fault (A):
An alarm fault is a warning condition that does not present an immediate danger or potential damage to the
compressor. An alarm state will not shutdown the compressor or affect normal operation. An alarm fault code
is displayed that must be manually reset to clear once the condition has been resolved or no longer exists.
Shutdown Fault (E):
A shutdown fault is a condition that may present danger or potential damage to the compressor if the
condition persists. A shutdown fault will cause the controller to stop the compressor. A shutdown fault code
is displayed that must be manually reset to clear once the condition has been resolved or no longer exists.
Two types of shutdown fault are definable a) non-emergency shutdown, an immediate controlled stop is
executed, b) emergency shutdown, an instantaneous stop is executed.
Unload Pressure:
The unload pressure is the delivery pressure level (adjustable) at which the controller will de-energise the
load solenoid output and the compressor will offload.
Load Pressure:
The load pressure is the delivery pressure level (adjustable) at which the compressor will energise the load
solenoid output and the compressor will load. If in the standby state, an automated main motor start
sequence is triggered prior to load.
Main Motor Start Sequence:
The controller will energise the Star contactor output followed by the Main contactor output 200ms later. After
the Star/Delta timer (adjustable) expires the controller will execute an automated Star to Delta contactor
output changeover with a 50ms star to delta transition time. If a Stop command is received during the start
sequence the controller will continue to execute the start sequence before stopping. This action is intended
to limit the break current of motor starter contactors.

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Load Delay Timer:
The star to delta output transition is immediately followed by a load delay time (adjustable) that will inhibit the
load solenoid output from energising until the load delay time expires. Intended to allow the main motor
speed to stabilize and other pre-load functions to occur.
Reload Delay Timer:
The reload delay time (adjustable) is a period of time immediately following a load to unload event during
which the load solenoid output is inhibited from energising.
Blow Down Timer:
The blow down time (adjustable) immediately follows a main motor stop event. During the blow down time a
start request is recognised but is not initiated until the timer expires. If the optional internal pressure
detection feature is enabled the restart inhibit is also dependant on internal pressure falling below the ‘start
inhibit pressure level’ (adjustable). Failure of internal pressure to fall below the set pressure level for a period
of two minutes after the set blow down timer expires will result in a blow down trip fault. The remaining time
in seconds is show on the Information Item display.
Standby Run-On-Time:
When off load the standby run-on-timer will start. If the compressor remains in an off load condition and the
timer expires the main motor will stop and the compressor will enter the Standby state. The compressor will
automatically re-start and load as required. This function is intended to improve efficiency during low demand
periods and to limit the number, and interval between, motor start events. The remaining time in seconds is
show on the Information Item display.
Stop Run-On-Time:
When stopped (stop button, remote stop input or remote stop command) the compressor will unload and the
main motor continue to run for the stop run-on-time before stopping. This function is intended to allow for
internal pressure venting and to limit lubrication oil aeration prior to the main motor stopping. The remaining
time in seconds is show on the Information Item display.
Started State:
The unit has been started (start button, remote start input or remote start command) and is in an active
condition ready to respond to changes in delivery pressure.
Running State:
The unit is in the Started state AND the main motor is running.
Loaded State:
The unit is in the Started state AND Running state AND the load solenoid output is energised.

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Power-up
initialisation
start inhibit
check
READY TO
START
motor start
sequence
load delay
(acceleration
time)
Reload
delay time
Start request
OR
Autorestart AND state was started
no start inhibit
conditions
present
start inhibit
conditions
present
load request
star/delta
se
q
uence ended
unload pressure
reached OR
unload request
shutdown
error
NO shutdown erro
r
shutdown error
standby
run on time
expired
load request
1
2
3
4
7
8
10
load
load delay
expired
9
stop
run on
time
stop
run on time
expired
12
stop request
init complete
run inhibit
AND
blowdown
standby
5
6
blowdown time expired
(AND no run inhibit conditions)
stop request
stop request
stop request
RUNNING STARTED
LOADED
stop request
standby
run on
time
11
reload time
expired
stop request
start request
stop request
AND
Star/delta
sequence
ended

14
7.0 User Interface
Display : Custom backlit LCD
Indicators : 2 x LED
Controls : 7 x Tactile push buttons
7.1 Keypad
START: Enter STARTED condition
STOP: Exit STARTED condition
RESET: Reset and clear fault conditions
ENTER: Confirm selection or value adjustments
MINUS/DOWN: Scroll down through menu, menu item options or decrement value
PLUS/UP: Scroll up through menu, menu item options or increment value
ESCAPE (C): Step back one menu navigation level
Start and Stop have one defined function and are not used for any other purpose.
Reset will initiate a display jump to the fault code item if a fault condition remains active or initiate a display
jump to the information item if no active faults exist in normal display mode. If pressed and held for longer
than two seconds in menu mode will exit menu mode to the normal operational display mode, page 00.
Enter will lock a selected value display preventing return, after a short delay, to the default Td value display.
When locked the ‘key’ symbol will flash. To unlock press Escape.
Escape will initiate a display jump to the information item in normal display mode, page 00.
Plus, Minus, Enter and Escape are used to navigate menu mode and adjust menu parameters.

15
7.2 Led Indicators
STATUS: Green, adjacent to Start and Stop buttons
FAULT: Red, adjacent to Stop and Reset buttons
Indicator States:
ON: Illuminated continuously.
FF: Fast Flash: on/off four times per second.
SF: Slow Flash: on/off once per second.
IF: Intermittent Flash: on/off every four seconds.
OFF: Extinguished continuously.
Machine State Number Machine State Status
Fault
1 Shutdown Error OFF FF
2 Startup Init OFF OFF **
Start Inhibit Check OFF **3 Start inhibit condition OFF SF
4 Ready to Start OFF OFF **
5 Blowdown if (load_request) FF
else IF OFF **
6 Standby IF OFF **
7 Start Motor in Star/Delta if (load_request) FF
else IF OFF **
8 Load Delay if (load_request) FF
else IF OFF **
9 Load ON OFF **
10 Reload Delay if (load_request) FF
else IF OFF **
11 Standby Run on Time IF OFF **
12 Stop Run on Time SF OFF **
** SF for Alarm condition

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7.3 Display
p
bar
psi
°C
°F
kPa
The display is divided in to 4 areas.
Top, Left: Display Field:-
4 character numeric display, with unit symbols, used to continuously show delivery
pressure in normal operating mode or menu page number in menu mode
Top, Right: Fault Symbol Field:-
Symbolic displays used to indicate common general fault conditions
Middle: Symbolic displays used to reinforce meaning of selected item, fault condition.
Symbolic status information in normal operational mode ‘Information Screen’ item
Bottom: Item and Value Field:-
Item identification: 2 character alphanumeric, 14 segment
Item Value: 4 character numeric, 7 segment
Item Unit: 3 character alphanumeric, 14 segment
Display Character Examples, Units:
bar
psi
kW
KiloWatt
kV
KiloVolt
rpm
ºC
%
percent
kPa
hour
minute
seconds
mA
milliAmp
mV
milliVolt
ºF
cfm
m³/min
ft³
cubic feet
cfm
m³
cubic metres
spm
bearing
monitoring
dBn
spm unit
+
positive
-
negative
time
hours/minutes
date
day/month/year
greater than
less than
up
down
star
delta

17
Operational Display Symbols:
Motor Running
Loaded
Amount of time, timer
Filter, differential pressure
Pressure set point indication (upper and lower set point indicators displayed independently)
Condensate drain active (optional function)
Power failure autorestart enabled (optional function)
Remote load or remote pressure regulation active
Remote start/stop
Normal Operational: selected item locked as temporary default display
Menu Mode: page item locked (adjustment inhibited)
Fault Display Symbols:
General fault Lubrication, oil, oil level
Emergency stop Dewpoint
Excess pressure Motor
Power failure Service due, maintenance
Above set temperature limit Filter differential, filter service
p
p

18
7.4 Display Structure and Menu Navigation
Display Item Structure:
All value, parameter or option selection displays are grouped into menu lists. Items are assigned to a list
according to type and classification. Items that can be used to select options or modify functions are
assigned to ‘menu mode’ lists. Items that an operator may require to view during routine operation, detected
pressure or temperature values for example, are assigned to the normal operational mode list. Lists are
identified by page number, the normal operational display list is page 0. All parameters and options are
assigned to menu mode pages 1 or higher. All Page 0 items are view only and cannot be adjusted.
Normal Operational Mode (Page 0):
At controller initialisation, all display elements and LED indicators are switched on for three seconds, the
display will then show the software version code for a further 3 seconds before initialisation is complete and
the normal operating display (Page 0) is shown. In page 0 ‘normal operational display mode’ the Display
Field will show the final delivery pressure continuously and the Item and Value Fields will initially show the
Information Item display for 35 seconds before reverting to the default temperature display item. All available
Item and Value field option displays (temperatures, pressures, hours counters) can be selected using the Up
or Down buttons at any time. The Item display will revert to the default item after 35 seconds if no further
selection is made. Pressing the Enter button will lock any selected Item display and inhibit return to the
default display. When an Item display is locked the lock key symbol will slow flash. To unlock an Item display
press Up or Down to view an alternative Item display or press Reset or Escape. In page 0 Escape will select
the Status Information Item display and Reset will select any active fault code display or the Status
Information Item display if no faults are active. Unless a selected Item display is locked, the display will
automatically jump to the Status Information Item display at key status change events. The timeout period
before returning to the default Item display is modified in some instances to enable the full range of a set
countdown timer to be shown. No Item values, options or parameters can be adjusted in page 0. If a fault
condition occurs the fault code becomes the first list item and the display will automatically jump to display
the fault code. More than one active fault code item can exist at any one time.
Access Code:
Access to page list displays higher than page 0 are restricted by access code. To access menu mode pages
press UP and DOWN together, an access code entry display is shown and the first code character will flash.
Use PLUS or MINUS to adjust the value of the first code character then press ENTER. The next code
character will flash; use UP or DOWN to adjust then press ENTER. Repeat for all four code characters. If the
code number is less than 1000 then the first code character will be 0(zero). To return to a previous code
character press ESCAPE. When all four code characters have been set to an authorized code number press
ENTER. Access to certain menu mode pages is dependent on authority level determined by the access code
used. An invalid code will return the display to normal operational mode; page 0.
The following pages and access levels are used:
ACCESS LEVEL = USER
(code = 9) ACCESS LEVEL =
SERVICE 1
(code = 100)
P00, P01, P02
P00, P01, P02, P08

19
Access Code Timeouts:
When in menu mode, if no key activity is detected for a period of time the display will automatically reset to
the normal operational display; Page 0. The timeout period is dependant on the access code used:
User: 1 minute
Menu Mode Navigation:
In menu mode the Display Field will flash and show the Page number. To select a page press UP or DOWN.
For each page the Item and Value field will display the first Item of the page list. To view a page list press
ENTER, the Page number will stop flashing and the Item display will flash. Press UP or DOWN to view the
selected page list items. To select an Item value for modification press ENTER, the Item display will stop
flashing and the Value display will flash. The value or option can now be modified by pressing UP(Plus) or
DOWN(Minus). To enter a modified value or option in memory press ENTER; alternatively the modification
can be abandoned, and the original setting maintained, by pressing ESCAPE.
Page 3
Page 2
Page 1
Item 1 Value
Item 2 Value
Item 3 Value
Item 4 Value
Item 5 Value
Page 0
Item 1 Value
Item 2 Value
Item 3 Value
Item 4 Value
Item 5 Value
Item 6 Value Page 5
Page 4
Press ESCAPE at any time in menu mode to step backwards one stage in the navigation process. Pressing
ESCAPE when the page number is flashing will exit menu mode and return the display to normal operational
mode; page 0.
Page 3
Page 2
Page 1
Item 1 Value
Item 2 Value
Item 3 Value
Item 4 Value
Item 5 Value
Page 0
Item 1 Value
Item 2 Value
Item 3 Value
Item 4 Value
Item 5 Value
Item 6 Value Page 5
Page 4
Press and hold RESET for two seconds at any time to immediately exit menu mode and return to the
normal operational mode display. Any value or option adjustment that has not been confirmed and entered
into memory will be abandoned and the original setting maintained.
A flashing Key symbol displayed with any Item indicates the Item is locked and cannot be modified.
This will occur if the Item is view only (non adjustable) or in instances where the item cannot be adjusted
while the compressor is in the operational STARTED state.

20
7.4.1 Menu Structure
P00:
User C> compressor status
Td delivery air temperature
Pd delivery pressure
PI internal pressure **
Pdifferential pressure **
H1 total running hours
H2 loaded hours
H3 general service hours
H4 air filter service hours
Sr speed rpm ++
Pu unload pressure
PL load pressure
do drain open time
dt drain interval time
Rt standby run on time
St stop run on time
Bt blowdown time
P> press. units bar/psi/kPa
T> temp. units
oC/oF
So mini-sequencer operation
Sr mini-sequencer rotation
time
01 logged error # 1
to
15 logged error # 15
P01:
Operation
Access Code
** only shown if internal pressure function enabled
++ only shown if speed regulation mode enabled
User level
P02:
Error Log
Access level 1
P08:
Speed Regulation
SC Speed Control Enable
SH Maximum Speed
SL Minimum Speed
So Optimum Speed
Su Unloaded Speed
S> speed rpm
A> mA output value
Pf P Factor
If I Factor
C> Control range percent
rr ramp rate limit
H3 oil filterl service timer
H4 air filter service timer
P04:
Alarm