Page 1
Quincy
Refrigerant compressed air dryers
QED-300, QED-600, QED-450, QED-250, QED-350, QED-500
Instruction book
Page 2
Page 3
Quincy
Refrigerant compressed air dryers
QED-300, QED-600, QED-450, QED-250, QED-350,
QED-500
From following serial No. onwards: CAQ 500 389
Instruction book
Original instructions
2011 - 11
Copyright notice
Any unauthorized use or copying of the contents or any part thereof is prohibited.
This applies in particular to trademarks, model denominations, part numbers and drawings.
This instruction book is valid for CE as well as non-CE labelled machines. It meets the
requirements for instructions specified by the applicable European directives as identified
in the Declaration of Conformity.
No. 2920 7103 90
www.quincycompressor.com
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Instruction book
Table of contents
1 Safety precautions..........................................................................................................5
1.1 SAFETY ICONS...................................................................................................................................5
1.2 SAFETY PRECAUTIONS, GENERAL...........................................................................................................5
1.3 SAFETY PRECAUTIONS DURING INSTALLATION...........................................................................................6
1.4 SAFETY PRECAUTIONS DURING OPERATION..............................................................................................7
1.5 SAFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR...........................................................................8
2 General description......................................................................................................10
2.1 INTRODUCTION.................................................................................................................................10
2.2 AIR SYSTEM....................................................................................................................................13
2.3 REFRIGERANT FLOW.........................................................................................................................14
2.4 CONDENSATE DRAIN SYSTEM..............................................................................................................15
3 Controller.......................................................................................................................17
3.1 INFOLOGIC² CONTROLLER...................................................................................................................17
3.2 CONTROL PANEL..............................................................................................................................18
3.3 ICONS AND SYMBOLS USED ON THE DISPLAY..........................................................................................18
3.4 MAIN SCREEN..................................................................................................................................20
3.5 SCROLLING THROUGH ALL SCREENS.....................................................................................................20
3.6 CALLING UP AMBIENT TEMPERATURE....................................................................................................23
3.7 DIGITAL INPUTS................................................................................................................................23
3.8 CALLING UP RUNNING HOURS..............................................................................................................24
3.9 CALLING UP MOTOR STARTS...............................................................................................................24
3.10 CALLING UP MODULE HOURS...............................................................................................................24
3.11 CALLING UP/RESETTING THE SERVICE TIMER .........................................................................................25
3.12 SHUT-DOWN WARNING.......................................................................................................................26
3.13 SHUT-DOWN....................................................................................................................................27
3.14 SELECTION BETWEEN LOCAL, REMOTE OR LAN CONTROL........................................................................28
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Instruction book
3.15 CALLING UP/MODIFYING CAN ADDRESS CONTROL..................................................................................28
3.16 CALLING UP/MODIFYING IP, GATEWAY AND SUBNETMASK........................................................................30
3.17 CALLING UP/MODIFYING SERVICE TIMER SETTINGS...................................................................................31
3.18 CALLING UP/MODIFYING THE UNIT OF TEMPERATURE................................................................................31
3.19 CALLING UP/MODIFYING UNIT OF PRESSURE...........................................................................................32
3.20 CALLING UP/MODIFYING DRYER REGULATION MODE.................................................................................32
3.21 CALLING UP/MODIFYING FLOW SWITCH FUNCTION....................................................................................33
3.22 TEST SCREENS................................................................................................................................33
3.23 ACTIVATING AUTOMATIC RESTART AFTER VOLTAGE FAILURE......................................................................34
3.24 ACTIVATING PASSWORD PROTECTION...................................................................................................34
3.25 SELECTION BETWEEN FLEXIBLE ALARM AND FIXED ALARM.........................................................................35
3.26 CALLING UP/MODIFYING FIXED DEW POINT ALARM SETTING........................................................................35
3.27 CALLING UP/MODIFYING FLEXIBLE DEW POINT ALARM SETTING...................................................................35
3.28 CALLING UP/MODIFYING THE LOW DEW POINT SETTING.............................................................................36
3.29 CALLING UP/MODIFYING HIGH AMBIENT TEMPERATURE SETTING..................................................................37
4 Installation.....................................................................................................................38
4.1 DIMENSION DRAWINGS.......................................................................................................................38
4.2 INSTALLATION PROPOSAL...................................................................................................................40
4.3 ELECTRICAL CONNECTIONS.................................................................................................................43
4.4 PICTOGRAPHS.................................................................................................................................45
5 Operating instructions.................................................................................................47
5.1 WARNINGS......................................................................................................................................47
5.2 INITIAL START..................................................................................................................................47
5.3 STARTING.......................................................................................................................................48
5.4 DURING OPERATION..........................................................................................................................49
5.5 STOPPING.......................................................................................................................................49
6 Maintenance instructions............................................................................................51
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7 Problem solving............................................................................................................53
8 Technical data...............................................................................................................57
8.1 SETTINGS OF FUSES.........................................................................................................................57
8.2 REFERENCE CONDITIONS AND LIMITATIONS............................................................................................57
8.3 AIR DRYER DATA..............................................................................................................................58
9 Pressure equipment directives...................................................................................60
10 Declaration of conformity............................................................................................61
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Instruction book
1 Safety precautions
1.1 Safety icons
Explanation
Danger for life
Warning
Important note
1.2 Safety precautions, general
General precautions
All responsibility for any damage or injury resulting from neglecting these precautions, or
non-observance of the normal caution and care required for installation, operation,
maintenance and repair, even if not expressly stated, will be disclaimed by the
manufacturer.
1. The dryers are designed for normal indoor use.
2. The operator must employ safe working practices and observe all related work safety requirements and
regulations.
3. If any of the following statements does not comply with the applicable legislation, the stricter of the two
shall apply.
4. Installation, operation, maintenance and repair work must only be performed by authorized, trained,
specialized personnel.
5. The dryer is not considered capable of producing air of breathing quality. To obtain air of breathing quality,
the compressed air must be adequately purified according to the applicable legislation and standards.
6. Before any maintenance, repair work, adjustment or any other non-routine checks, stop the dryer, press
the emergency stop button, switch off the voltage and depressurize the dryer. In addition, the power
isolating switch must be opened and locked.
7. Never play with compressed air. Do not apply the air to your skin or direct an air stream at people. Never
use the air to clean dirt from your clothes. When using the air to clean equipment, do so with extreme
caution and wear eye protection.
8. The owner is responsible for maintaining the dryer in safe operating condition. Parts and accessories shall
be replaced if unsuitable for safe operation.
9. It is not allowed to walk or stand on the dryer or its components.
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1.3 Safety precautions during installation
Precautions during installation
1. The dryer must only be lifted using suitable equipment and in accordance with the applicable safety
regulations. Loose or pivoting parts must be securely fastened before lifting. It is strictly forbidden to
dwell or stay in the risk zone under a lifted load. Lifting acceleration and deceleration must be kept within
safe limits. Wear a safety helmet when working in the area of overhead or lifting equipment.
2. Place the dryer where the ambient air is as cool and clean as possible. If necessary, install a suction duct.
Never obstruct the air inlet. Care must be taken to minimize the entry of moisture at the inlet air.
3. Any blanking flanges, plugs, caps or desiccant bags must be removed before connecting the pipes.
4. Air hoses must be of correct size and suitable for the working pressure. Never use frayed, damaged or
worn hoses. Distribution pipes and connections must be of the correct size and suitable for the working
pressure.
5. The aspirated air must be free of flammable fumes, vapours and particles, e.g. paint solvents, that can lead
to internal fire or explosion.
6. Arrange the air intake so that loose clothing worn by people cannot be sucked in.
7. Ensure that all piping is free to expand under heat and that it is not in contact with or close to flammable
materials.
8. No external force may be exerted on the air outlet valve. The connected pipe must be free of strain.
9. If remote control is installed, the machine must bear a clear sign stating
controlled and may start without warning".
The operator has to make sure that the machine is stopped and that the isolating switch is open and locked
before any maintenance or repair. As a further safeguard, persons switching on remotely controlled
machines shall take adequate precautions to ensure that there is no one checking or working on the
machine. To this end, a suitable notice shall be affixed to the starting equipment.
10. Air-cooled machines must be installed in such a way that an adequate flow of cooling air is available and
that the exhausted cooling air does not recirculate to the inlet.
11. The electrical connections must correspond to the applicable codes. The machines must be earthed and
protected against short circuits by fuses in all phases. A lockable power isolating switch must be installed
near the equipment.
12. On machines with automatic start-stop system or if the automatic restart function after voltage failure is
activated, a sign stating "This machine may start without warning" must be affixed near the instrument
panel.
13. Never remove or tamper with the safety devices, guards or insulation fitted on the machine. Every pressure
vessel or auxiliary installed outside the machine to contain air above atmospheric pressure must be
protected by a pressure-relieving device or devices as required.
14. Piping or other parts with a temperature in excess of 80˚C (176˚F) and which may be accidentally touched
by personnel during normal operation must be guarded or insulated. Other high-temperature piping must
be clearly marked.
15. For water-cooled machines, the cooling water system installed outside the machine has to be protected by
a safety device with set pressure according to the maximum cooling water inlet pressure.
16. If no safety valve is present in the air net close to the desiccant dryer (e.g. safety valve of compressor),
full flow safety valves must be installed on the dryer vessels.
17. If the maximum pressure of the compressor is higher than the design pressure of the dryer, a full flow
safety valve must be installed between the compressor and the dryer in order to blow off the excessive
pressure in case the safety valve of the dryer should be out of order or blocked.
Instruction book
"Danger: This machine is remotely
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Instruction book
Also consult following safety precautions: Safety precautions during operation and Safety
precautions during maintenance or repair.
These precautions apply to machinery processing or consuming air or inert gas. Processing
of any other gas requires additional safety precautions typical to the application which are not
included herein.
Some precautions are general and cover several machine types and equipment; hence some
statements may not apply to your machine.
1.4 Safety precautions during operation
Precautions during operation
1. Always be careful when touching any piping or components of the dryer during operation. On dryers using
heat to regenerate the desiccant, some parts will become very hot.
2. Use only the correct type and size of hose end fittings and connections. When blowing through a hose or
air line, ensure that the open end is held securely. A free end will whip and may cause injury. Make sure
that a hose is fully depressurized before disconnecting it.
3. Persons switching on remotely controlled machines shall take adequate precautions to ensure that there
is no one checking or working on the machine. To this end, a suitable notice shall be affixed to the remote
start equipment.
4. Never operate the machine when there is a possibility of taking in flammable or toxic fumes, vapours or
particles.
5. Never operate the machine below or in excess of its limit ratings.
6. Keep all bodywork closed during operation. Bodywork should be opened for short periods only, e.g. to
carry out routine checks. Wear ear protectors when removing a panel.
7. People staying in environments or rooms where the sound pressure level reaches or exceeds 90 dB(A)
shall wear ear protectors.
8. Periodically check that:
• All guards are in place and securely fastened
• All hoses and/or pipes inside the machine are in good condition, secure and not rubbing
• There are no leaks
• All fasteners are tight
• All electrical leads are secure and in good order
• Safety valves and other pressure-relief devices are not obstructed by dirt or paint
• Air outlet valve and air net, i.e. pipes, couplings, manifolds, valves, hoses, etc. are in good condition,
free of wear or abuse
9. If warm cooling air from dryers is used in air heating systems, e.g. to warm up a working area, take
precautions against air pollution and possible contamination of the breathing air.
10. Do not remove any of, or tamper with, the sound-damping material.
11. Never remove or tamper with the safety devices, guards or insulations fitted on the machine. Every pressure
vessel or auxiliary installed outside the machine to contain air above atmospheric pressure shall be
protected by a pressure-relieving device or devices as required.
Also consult following safety precautions: Safety precautions during installation and Safety
precautions during maintenance or repair.
These precautions apply to machinery processing or consuming air or inert gas. Processing
of any other gas requires additional safety precautions typical to the application which are not
included herein.
Some precautions are general and cover several machine types and equipment; hence some
statements may not apply to your machine.
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1.5 Safety precautions during maintenance or repair
Precautions during maintenance or repair
1. Always use the correct safety equipment (such as safety glasses, gloves, safety shoes, etc.).
2. Use only the correct tools for maintenance and repair work.
3. Use only genuine spare parts.
4. All maintenance work shall only be undertaken when the machine has cooled down.
5. A warning sign bearing a legend such as "Work in progress - do not start" shall be attached to the starting
equipment.
6. Persons switching on remotely controlled machines shall take adequate precautions to ensure that there
is no one checking or working on the machine. To this end, a suitable notice shall be affixed to the remote
starting equipment.
7. Close the dryer air outlet valve before connecting or disconnecting a pipe.
8. Before removing any pressurized component, effectively isolate the machine from all sources of pressure
and relieve the entire system of pressure.
9. Never use flammable solvents or carbon tetrachloride for cleaning parts. Take safety precautions against
toxic vapours of cleaning liquids.
10. Scrupulously observe cleanliness during maintenance and repair. Keep dirt away by covering the parts
and exposed openings with a clean cloth, paper or tape.
11. Never weld on, or in any way modify, pressure vessels.
12. Whenever there is an indication or any suspicion that an internal part of a machine is overheated, the
machine shall be stopped but no inspection covers shall be opened before sufficient cooling time has
elapsed; this to avoid the risk of spontaneous ignition of the oil vapor when air is admitted.
13. Never use a light source with open flame for inspecting the interior of a machine, pressure vessel, etc.
14. Make sure that no tools, loose parts or rags are left in or on the machine.
15. All regulating and safety devices shall be maintained with due care to ensure that they function properly.
They may not be put out of action.
16. Before clearing the machine for use after maintenance or overhaul, check that operating pressures,
temperatures and time settings are correct. Check that all control and shut-down devices are fitted and that
they function correctly.
17. Protect the motor, electrical and regulating components, etc. to prevent moisture from entering them, e.g.
when steam-cleaning.
18. Make sure that all sound-damping material and vibration dampers, e.g. damping material on the bodywork,
is in good condition. If damaged, replace it by genuine material from the manufacturer to prevent the
sound pressure level from increasing.
19. Never use caustic solvents which can damage materials of the air net, e.g. polycarbonate bowls.
20. The following safety precautions are stressed when handling refrigerant:
• Never inhale refrigerant vapours. Check that the working area is adequately ventilated; if required, use
breathing protection.
• Always wear special gloves. In case of refrigerant contact with the skin, rinse the skin with water. If
liquid refrigerant contacts the skin through clothing, never tear off or remove the latter; flush
abundantly with fresh water over the clothing until all refrigerant is flushed away; then seek medical
first aid.
21. The following safety precautions are stressed when handling desiccant:
• Take precautions not to inhale desiccant dust.
• Check that the working area is adequately ventilated; if required, use breathing protection.
• Do not overfill the dryer when replacing desiccant.
Instruction book
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Instruction book
Also consult following safety precautions: Safety precautions during installation and Safety
precautions during operation.
These precautions apply to machinery processing or consuming air or inert gas. Processing
of any other gas requires additional safety precautions typical to the application which are not
included herein.
Some precautions are general and cover several machine types and equipment; hence some
statements may not apply to your machine.
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2 General description
2.1 Introduction
General
QED air dryers remove moisture from the compressed air by cooling the air to near freezing point. This causes
the water to condense. The condensate is automatically drained. The dried air is warmed up before leaving
the dryer.
An Infologic² controller controls and protects the dryer.
Instruction book
QED-250 up to QED-600 - general view
Reference Designation
AO Dry air outlet
AI Wet air inlet
ER1 Infologic² controller
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Instruction book
QED-250 up to QED-600 - side view
The front panel and the side panel can be removed for service operations.
Reference Designation
1 Supply cable passage
Dm Manual drain valve
Da Automatic drain connection
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Instruction book
QED-250 up to QED-600 - internal view
Reference Name
1 Compressor
2 Condenser
3 Heat exchanger
4 Condenser fan
5 Hot gas bypass valve
6 Capillary tube
7 Refrigerant dryer/filter
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Instruction book
2.2 Air system
Air flow diagram
Name Reference
1 Heat exchanger
2 Evaporator
3 Water separator
4 Refrigerant compressor
5 Hot gas bypass valve
6 Condenser
7 Refrigerant dryer/filter
8 Capillary
9 Electronic condensate drain
10 Liquid separator
11 Cooling fan
Dm Manual drain valve
Description
Air flow diagram
Compressed air enters heat exchanger (1) and is cooled by the outgoing cold, dried air. Water in the incoming
air starts to condense. The air then flows through heat exchanger/evaporator (2) where the refrigerant
evaporates, causing the air to be further cooled to close to the evaporating temperature of the refrigerant. More
water in the air condenses. The cold air then flows through separator (3) where the condensate is separated
from the air.
The separator is integrated in the heat exchanger/evaporator.
The condensate collects in the Electronic Water Drain (EWD) and is automatically drained. The cold, dried
air flows through heat exchanger (1), where it is warmed up by the incoming air to approx. 5 ˚C (9 ˚F) below
the temperature of the incoming air.
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Condensation in the air net cannot occur unless the air is cooled to below the dew point indicated on the
control panel.
2.3 Refrigerant flow
Flow diagram
Instruction book
Name Reference
1 Heat exchanger
2 Evaporator
3 Water separator
4 Refrigerant compressor
5 Hot gas bypass valve
6 Condenser
7 Refrigerant dryer/filter
8 Capillary
9 Electronic condensate drain
10 Liquid separator
11 Cooling fan
Dm Manual drain valve
Operation
Flow diagram
The liquid separator (10) ensures that only refrigerant enters the compressor.
Compressor (4) delivers hot, high-pressure refrigerant gas which flows through condenser (6) where the
refrigerant condenses.
The liquid refrigerant flows through dryer/filter (7) to the capillary tube (8). The refrigerant leaves the capillary
tube at evaporating pressure.
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Instruction book
The refrigerant enters evaporator (2), where it withdraws heat from the compressed air by further evaporation
at constant pressure. The refrigerant leaves the evaporator and is sucked in again by the compressor.
Automatic regulation
The condenser pressure must be kept as constant as possible to obtain stable operation. The fan control switch
therefore stops and starts the condenser cooling fan (11).
If, under partial or no load, the evaporator pressure drops to 7.3 bar(e) (105.8 psig), the bypass regulator (5)
opens and hot, high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure from
dropping any further.
2.4 Condensate drain system
Description
Electronic water drain
The dryers are equipped with an electronic water drain (EWD). The condensate from the condensate trap
accumulates in a collector. When the condensate reaches a certain level, it is discharged through the drain
outlet.
The condensate can also be drained by pressing the test button (1).
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Control panel
Instruction book
Control panel
Text on control panel
Reference Description
(1) Power
(2) Alarm
(3) Test
Table with references
Name Description
L1 LED "drain voltage on"
L2 LED alarm
F Funtions button
The control panel on top of the drain includes a multifunction button and two state display LED's. When LED
L1 is continuously on, this indicates that the solenoid valve is energized; when LED L1 is blinking, this
indicates that the valve is draining. If no water is supplied to the drain, the valve will make a short forced
opening every three hours. LED L2 indicates an alarm situation.
The test button can be used in three different ways:
• When it is pressed during normal operation, it starts a manual drain test.
• When it is pressed during an alarm, it resets the control logic.
• By pressing it for at least five seconds, the self-diagnosis routing will be started. This function is very
useful when the installation is finished, to check if the installation has been successful and to simulate the
alarm situation without having to wait for condensate to build inside the dryer. To return to normal
operation, just switch the drain off and on again.
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Instruction book
3 Controller
3.1 Infologic² controller
Control panel
Control panel
General description
The Infologic² controller automatically controls the dryer, i.e.:
• Monitors the pressure dew point and the digital switches to ensure safe operation.
• Stops the dryer whenever necessary.
• Restarts the dryer when required.
• Allows selection of the control mode. See section Calling up/modifying dryer regulation mode.
In order to control the dryer and to read and modify programmable parameters, the controller has a
control panel provided with:
• LED's, indicating the status of the dryer
• A display, indicating the operating conditions or a fault
• Keys to control the dryer and to access the data collected by the controller
• Buttons to manually start and stop the dryer
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3.2 Control panel
Detailed description
Instruction book
Control panel
Reference Designation Function
1 Display Shows icons and operating conditions.
2 Automatic operation symbol
3 LED, Automatic operation Indicates that the regulator is automatically controlling the
dryer. The dryer is stopped and restarted depending on the
air consumption and the data programmed in the regulator.
4 Warning symbol
5 LED, Warning Is lit if a warning condition exists.
6 Voltage symbol
7 LED, Voltage on Indicates that the voltage is switched on.
8 Service symbol
9 LED, Service Is lit when service is needed.
10 Start button This button starts the dryer. Automatic operation LED (3)
lights up. The Infologic² is operative.
11 Stop button This button is used to stop the dryer. Automatic operation
LED (3) goes out.
12 Scroll buttons Use these buttons to scroll through the menu .
13 Enter button Use this button to confirm the last action
14 Escape button Use this button to go to previous screen or to end the
current action.
3.3 Icons and symbols used on the display
Function Icon Description
Dryer status When the dryer is stopped, the icon is standing still.
When the dryer is operating, the icon is rotating.
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Instruction book
Function Icon Description
Machine control mode Remote start / stop
Automatic restart Automatic restart after voltage failure is active
Timer Indicates a timer is active
Service Service required
Units Temperature unit
LAN control
Temperature unit
Hours
The value shown must be multiplied by 1000 to get the actual
value
Other icons Motor
Drain
Flow switch on, energy saving mode off
Energy saving mode on (flow switch off)
Energy saving mode on and flow switch on
Ambient temperature
Dew point temperature
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3.4 Main screen
Main screen
When the voltage is switched on, the first screen is a test screen. The next screen is the main screen, shown
automatically:
In above image, the screen shows:
Instruction book
Main screen, basic indications
• The dryer status (the icon is rotating when the dryer compressor is running, standing still when stopped).
• The dew point temperature (3 °C/37.4 °F) with the dew point icon.
If certain other options are active, e.g. Energy efficient mode activated (see section Calling up/modifying
dryer regulation mode), the main screen may also display the corresponding icons (see section Icons used).
Just after starting, the timer icon is displayed during a programmed time. After this period,
the timer icon disappears again.
3.5 Scrolling through all screens
Scroll buttons
Scroll buttons (12) can be used to scroll through all screens. The screens are divided into register screens,
measured data screens, digital input screens (numbered as <d. in>, <d. 1>, ...), parameter screens (numbered
as <P. 1>, <P. 2>, ...), protections screens (numbered as <Pr. 1>,...) and test screens (numbered as <t. 1>,...).
During scrolling, the numbers of the screens appear in a consecutive order. For most screens, the unit of
measurement and the related pictograph are shown together with the screen number.
Example (operating hours)
The screen shows the screen number <d. 1>, the unit used <hrs> and the related icon (operation). Press Enter
key (13) to call up the number of operating hours.
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Instruction book
Overview of the screens
Digital input
screens
<d. in> Status of the digital inputs See section Digital inputs
<d. 1> Running hours See section Calling up running hours
<d. 2> Motor starts See section Calling up motor starts
<d. 3> Module hours See section Calling up module hours
<d. 4> Service timer reading See section Calling up/Resetting the service
<d. 5 Actual program version
Parameter
screens
<P. 1> Selection between local, remote or LAN
<P. 2> Setting a node ID for LAN control and the
<P. 3> Settings for IP, gateway and Subnet mask See section Calling up/modifying IP,
<P. 4> Service timer See section Calling up/modifying service
<P. 5> Setting of the temperature unit See section Calling up/Modifying unit of
<P. 6> Setting of the pressure unit See section Calling up/Modifying unit of
<P. 7> Function: Automatic restart after voltage
<P. 8> Setting of dryer regulation mode See section Calling up/modifying dryer
<P. 9> Flow switch See section Calling up/modifying flow switch
<P. 10> Setting a password See section Activating password protection
<P. 11> Flexible or fixed alarm See section Selection between flexible
<P. 12> Setting of fixed alarm See section Calling up/modification fixed
<P. 13> Setting of flexible alarm See section Calling up/modification flexible
Designation Related topic
timer
Designation Related topic
See section Selection between Local
control
channels for Mk 4 and Mk 5
failure
Remote and LAN control
See section Calling up/modifying CAN
address control
Gateway and Subnetmask
timer settings
temperature
pressure
See section Activating automatic restart
regulation mode
function
alarm and fixed alarm
dew point alarm setting
dew point alarm setting
Protections
screens
<Pr. 2> Low dew point alarm See section Shutdown warning
<Pr. 3> High ambient temperature alarm This value is fixed and cannot be modified.
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Designation Related topic
See section Shutdown warning
Page 24
Test screens Designation Related topic
<t. 1> Display test See section Test screens
Menu flow
Instruction book
Simplified menu flow
Ref. Description Ref. Description
(1) Dew point (main screen) (13) Temperature unit
(2) Ambient temperature (14) Pressure unit
(3) Digital input status (15) Auto restart function
(4) Running hours (16) Dryer regulation mode
(5) Motor starts (17) Flow switch setting
(6) Module hours (18) Password setting
(7) Service timer reading (19) Alarm options
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Instruction book
Ref. Description Ref. Description
(8) Actual program version (20) Fixed alarm setting
(9) LAN selection (21) Flexible alarm setting
(10) Settings node ID (22) Low dew point alarm and shutdown setting
(11) IP settings (23) High ambient alarm and shutdown setting
(12) Service timer setting (24) Display test
3.6 Calling up ambient temperature
Calling up ambient temperature
Starting from the Main screen, press Scroll button (12). The ambient temperature will be shown:
In the above example, the screen shows that the ambient temperature is 25 ˚C (77 °F).
This temperature is used by the regulation algorithm to calculate a safe dew point in the energy efficient mode
(see section Calling up/modifying dryer regulation mode).
3.7 Digital inputs
Status of digital inputs
Starting from the Main screen, press Scroll button (12) until <d. In> is shown and then press the Enter button
(13). A screen similar to the following appears:
The screen shows (from left to right) the status of the remote start/stop switch, the electronic condensate drain
contact and the flow switch.
Contact Description Value Status
1 Remote Start/Stop switch 0 Stop
1 Start
2 Condensate drain contact 0 Drain alarm
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Contact Description Value Status
1 No problem
3 Flow switch 0 No flow
1 Air flow
3.8 Calling up running hours
Calling up running hours
Starting from the Main screen, press Scroll button (12) until <d. 1> is shown and then press Enter button (13).
A screen similar to the following appears:
Instruction book
The number of hours is shown in <hrs> (hours) or in <x1000 hrs> (hours x 1000). In above example, the
screen shows the dryer has been running during 100 hours.
3.9 Calling up motor starts
Calling up motor starts
This screen shows the number of motor starts (x 1 or - if <x1000> lights up - x 1000). In the above example,
the number of motor starts is 10100.
3.10 Calling up module hours
Calling up module hours
Starting from the Main screen, press Scroll button (12) until <d. 3> is shown and then press Enter button (13).
A screen similar to the following appears:
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In the example shown, the screen shows the unit used (hrs) and the value (5000): the regulator module has
been in service during 5000 hours.
3.11 Calling up/resetting the service timer
Calling up the service timer
The controller has a built-in timer to give a warning when certain maintenance activities are to be carried out.
Starting from the Main screen, press Scroll button (12) until <d. 4> is shown and then press Enter button (13).
A screen similar to the following appears:
This screen shows the unit used <hrs> (or <x1000 hrs>) and the value <1191>. In the example shown, the
compressor has run 1191 hours since the previous service (i.e. the last time the timer was reset).
Service warning
A service warning will appear when the service timer has reached the programmed time interval. See section
Calling up/modifying service timer settings.
If the service timer exceeds the programmed time interval, alarm LED (5) will light up.
Stop the compressor, switch off the voltage and carry out the required service actions. See section Maintenance
instructions.
After servicing, reset the service timer.
Resetting the service timer
• Scroll to register screen <d. 4> and press Enter button (13).
• The reading (e.g. 4000) will appear.
• Press Enter button (13) and - if a password is set - enter the password. The value shown will start blinking,
indicating that resetting is possible.
• Press Enter button (13) to reset the timer or - in case you desire to leave the screen without changes - press
the Escape button (14) to cancel the operation.
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3.12 Shut-down warning
Description
A shutdown warning will appear in the event of:
• A too low or too high dew point temperature
• A too high ambient temperature
• A drain fault
The dryer remains running. Alarm LED (5) is lit. The alarm disappears automatically when the abnormal
condition ends.
Dew point temperature warning
If the dew point temperature is lower than the programmed value (default value -0.1 °C (31.8 °F), see section
Calling up/modifying low dew point setting) or if it exceeds the warning level (see section Selection between
flexible alarm and fixed alarm), alarm LED (5) will light up and the related pictograph (dew point) starts
flashing.
Instruction book
Main screen with dew point temperature warning
In the example shown, the dew point is 20 °C (68 °F) and the dew point icon is flashing.
If the dew point becomes normal again, the alarm will disappear.
High ambient temperature alarm
If the ambient temperature is higher than the programmed value (default value 50 °C (122 °F), see section
Calling up/modifying high ambient temperature setting) during at least 25 seconds, but still below 60 °C (140
°F), alarm LED (5) will light up and the related pictograph (ambient temperature) starts flashing.
Main screen with ambient temperature warning
In the example shown, the dew point is 30 °C (86 °F) and the ambient temperature icon is flashing. See section
Calling up ambient temperature to check the temperature.
If the ambient temperature drops again below the programmed value, the alarm will disappear.
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Drain alarm
The drain alarm appears when:
• The drain is not able to drain all the condensate.
• The compressed air pressure is too low.
• During initial start-up it may indicate that the automatic drain is connected wrongly. See section Problem
solving.
In case of a drain alarm, alarm LED (5) will light up and the related pictograph (drain) starts flashing.
Main screen with drain alarm
Remedy
• It remains possible to scroll through other screens (using Scroll buttons 12) to check the actual status of
the related parameters.
• If necessary, press the Stop button (11) to stop the dryer.
• If necessary, switch off the voltage, inspect the dryer and remedy.
• The warning message will disappear as soon as the warning condition disappears.
3.13 Shut-down
Description
The dryer will shut down:
• In case the dew point temperature gets below - 0.5 °C (31.1 °F) (delay = 30 s)
• In case the ambient temperature is higher than 60 °C (140 °F) (delay = 60 s)
• In case of a problem with one of the temperature sensors
Alarm LED (5) will light up and the related icon (dew point or ambient temperature) starts flashing. The dryer
is stopped and will have to be restarted manually after remedying the problem.
After the dryer is stopped, it can take up to 5 minutes before the dryer can be restarted
(protection against too frequent starting).
Temperature sensor alarm
If the dew point sensor or the ambient temperature sensor is disconnected or out of order, alarm LED (5) will
light up and the related pictograph (dew point or ambient temperature) starts flashing.
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Main screen with ambient temperature alarm
The display still shows the dew point (30 °C - 86 °F), but the ambient icon is flashing.
Instruction book
Main screen with dew point sensor alarm
The display shows <Err> and the dew point icon is flashing.
Press the Escape button (14) to reset and restart the dryer manually.
3.14 Selection between local, remote or LAN control
Selection between local, remote or LAN control
Starting from the Main screen, press Scroll button (12) until <P. 1> is shown and then press Enter button (13).
The actually selected control mode is shown: <LOC> for local control, <rE> for remote control or <LAn>
for LAN control.
To change: press Enter button (13) and - if necessary - enter the password (see section Activating password
protection). The actually selected control mode is blinking. Use Scroll button (12) to change the control mode.
Press Enter button (13) to program the new control mode or press Escape button (14) to cancel.
3.15 Calling up/modifying CAN address control
Calling up
Starting from the main screen, press the Scroll button (12) until <P. 2> is shown and then press Enter button
(13).
If necessary enter the password. The next screen shows that the function is ON or OFF. Press the Enter button
(13) to change this mode. Use the Scroll buttons (12) to select <On> or <OFF> and press Enter to program.
When this function is ON, use the Scroll buttons up or down (12) to see the node ID.
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If desired the user can change this ID. Press the Enter button (13): the node ID value starts blinking. Use the
Scroll buttons (12) to change the node ID. Press the Enter button (13) to program the new node ID or press
the Escape button (14) to leave this screen or to cancel this operation.
Modifying the Node ID
The Node ID can be changed; use a value between 1 and 31. When the function is ON, the parameters cannot
be modified. Change the function to OFF to change the node ID.
It is also possible to change the channels. The controller has 4 channels. When changing the channels, the
controller can act as a Mk IV controller (a previous version of the controller). To set the channels, go to the
screen where the node ID is visible. Press the Scroll button down (12). The following screen appears:
Press the Enter button (13) to modify the setting. The utmost left value will blink. Change this value by using
the Scroll buttons (12). Press the Enter button (13) to confirm. Change the other values in the same way, as
required.
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After modifying the settings, the screen may look as follows:
3.16 Calling up/modifying IP, Gateway and Subnetmask
Calling up
Starting from the Main screen, press the Scroll button (12) until <P. 3> is shown and then press Enter button
(13).
The next screen shows either <OFF> or <On>. If <On>, press the Enter button (13) to modify it to <OFF>.
Use the Scroll buttons Up or Down (12) to scroll between the items in this list (<IP> for IP address, <Sub>
for Subnetmask or <GAtE> for Gateway):
Instruction book
Modification
Press the Enter button (13) and if necessary enter the password. The first digits are blinking. Use the Scroll
buttons Up or Down (12) to modify the settings and press Enter (13) to confirm. Modify the next digits the
same way. The standard IP address is set as 192.168.100.100.
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3.17 Calling up/modifying service timer settings
Calling up/modifying service timer settings
Starting from the Main screen:
• Press Scroll button (12) until <P. 4> is shown and then press Enter button (13): the setting of the service
timer is shown in <hrs> (hours) or <x1000 hrs> (hours x 1000). Example: <4000 hrs> means the timer is
set at 4000 running hours.
• Press Enter button (13) to modify this value (a password may be required): the value starts blinking. Use
the Scroll buttons (12) to modify the setting.
• Press Enter button (13) to program the new value.
• Press Escape button (14) to return to the parameter screen.
3.18 Calling up/modifying the unit of temperature
Calling up/modifying unit of temperature
Starting from the Main screen, press Scroll button (12) until <P. 5> is shown and then press Enter button (13).
The actually used unit is shown. Possible settings are <˚C> and <˚F>.
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Press Enter button (13) (unit starts blinking) and use the Scroll buttons (12) to select another unit of
temperature.
Press Enter button (13) to program the new unit.
Press Escape button (14) to return to the parameter screen.
3.19 Calling up/modifying unit of pressure
Calling up/modifying unit of pressure
In a similar way as explained in section Calling up/Modifying unit of temperature, also the unit of pressure
can be modified. This is done in screen <P. 6>.
For dryers however, there is no indication of the pressure on the controller, so this setting is of no importance.
3.20 Calling up/modifying dryer regulation mode
Instruction book
Description
The dryer has two regulation modes:
• Regular mode
The dryer achieves the lowest possible dew point.
• Energy efficient mode
The dryer will regulate the dew point between the best achievable dew point and a safe dew point.
Calling up/modifying dryer regulation mode
Starting from the Main screen, press arrow key (12) until <P. 8> is shown and then press enter key (13): the
actual dryer regulation mode is shown as <rEG> (regular mode) or <En.EF.> (Energy efficient mode)
Press enter key (13) to modify this value (a password may be required), the value starts blinking. Use arrow
keys (12) to modify this setting.
Press enter key (13) to program the new value and to return to the parameter screen.
Press Escape button (14) to return to the parameter screen.
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3.21 Calling up/modifying flow switch function
Description
The flow switch monitors the compressed air flow through the dryer. If the function is active and when no
flow is detected, the controller stops the dryer. The controller will restart the dryer when air flows through
the dryer.
If the flow switch is not active, the dryer keeps running independently from the air flow.
Calling up/modifying flow switch function
Starting from the Main screen, press arrow key (12) until <P. 9> is shown and then press Enter key (13): the
actual flow switch setting is shown: <StOP> (flow switch function is active) or <OFF> (flow switch function
is not active).
Press Enter key (13) to modify this value (a password may be required), the value starts blinking. Use arrow
keys (12) to modify the setting.
Press Enter key (13) to program the new value and use Escape key (14) to return to the parameter screen.
The option <StbY> is not used and has therefore the same result as selecting <OFF>.
The flow switch is active
The flow switch is not active
3.22 Test screens
Display test
Starting from the Main screen, press Scroll buttons (12) until <t. 1> is shown and then press Enter button (13).
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The display now shows all icons that can be displayed:
3.23 Activating automatic restart after voltage failure
Description
This function allows the compressor to restart automatically after a power failure.
This parameter, accessible in screen <P. 7>, can only be modified after entering a code. Consult Quincy if
this function is to be activated.
Instruction book
3.24 Activating password protection
Important settings such as the setting of the service timer and control mode settings can be protected by a
password.
Starting from the Main screen:
• Press Scroll buttons (12) until <P. 10> is shown and press Enter button (13):
• Password (<PASS>) appears on the screen. Press the Enter button (13).
• The screen shows the password status (ON (<On>) or OFF (<OFF>). Press Enter button (13) to modify.
• Change the value with Scroll buttons (12).
• Select <On> and press Enter button (13).
• Enter the new password and press Enter button (13) to confirm.
• Enter the password again and press Enter button (13) to confirm.
• <On> appears on the display. Press Escape button (14) to return to the previous screen.
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Lost passwords can not be recovered. Save the password carefully.
3.25 Selection between flexible alarm and fixed alarm
Selecting between flexible alarm and fixed alarm
The dew point alarm can be set in fixed or flexible mode. If set to fixed mode, an alarm will be triggered when
the dew point exceeds the alarm setting (e.g. 20°C/68 °F). If set to flexible mode, an alarm will be triggered
if the dew point exceeds an offset of the desired dew point (e.g. ambient temperature minus 20 °C/68 °F).
Starting from the Main screen, press Scroll button (12) until <P. 11> is shown and then press Enter button
(13). The actually selected control mode is shown on the display: <FI.AL> for fixed alarm, <FL.AL> for
flexible alarm.
Fixed alarm is selected
To change: press Enter button (13) . The actually selected alarm mode is blinking. Use Scroll button (12) to
change the alarm mode. Press Enter button (13) to program the new alarm mode. Press Escape button (14) to
return to the parameter screens.
3.26 Calling up/modifying fixed dew point alarm setting
Calling up/modifying fixed dew point alarm setting
Starting from the Main screen, press Scroll button (12) until <P. 12> is shown and then press Enter button
(13): the actual setting of the fixed dew point alarm is shown.
Press Enter button (13) to modify this value the temperature unit starts blinking. Use the Scroll buttons (12)
to modify the setting.
Press Enter button (13) to program the new value. Press Escape button (14) to return to the previous screen.
3.27 Calling up/modifying flexible dew point alarm setting
Calling up/modifying flexible dew point alarm setting
Starting from the Main screen, press Scroll button (12) until <P. 13> is shown and then press Enter button
(13). <FL.AL> is shown.
Press Enter button (13) again. Next screen is shown:
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<SEt> is the offset value that will trigger the alarm. Press Enter button (13): the programmed value starts
blinking. To change, use the Scroll buttons (12). Press Enter button (13) to modify and Escape button (14) to
return to the previous screen.
It is also possible to adjust the value when the alarm must disappear again. This is done by adjusting the
<rSEt> value. From the <SEt> screen, press the Scroll buttons (12). Following screen is shown:
Press Enter button (13): the programmed value starts blinking. To change, use the Scroll buttons (12). Press
Enter button (13) to modify.
Press Escape button (14) to exit.
3.28 Calling up/modifying the low dew point setting
Calling up/modifying the low dew point setting
In protection parameter set Pr. 2, the Low dew point alarm level (<AL-L>) and the Low dew point shutdown
level (<Sd-L>) can be set. Both values are adjustable between -0.5 °C (31.1 °F) and -0.1 °C (31.82 °F).
Starting from the Main screen, press Scroll button (12) until <Pr. 2> is shown and then press Enter button
(13): <AL-L> is shown.
Press Enter button (13): the programmed value starts blinking. Use the Scroll buttons (12) to modify.
Press Enter button (13) to confirm the new value and press Escape button (12) to return to previous screen.
From the screen where <AL-L> is shown, use the Scroll buttons (12) to go to <Sd-L>.
The value of <Sd-L> can be modified in a similar way.
Press Escape button (14) to return to the parameter screen.
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3.29 Calling up/modifying high ambient temperature setting
Calling up/modifying high ambient temperature setting
In protection parameter set Pr. 3, the High ambient temperature alarm level (<AL-H>) and the High ambient
temperature shutdown level (<Sd-H>) can be set. Both values are adjustable between 35 °C (95 °F) and 60
°C (140 °F).
Starting from the Main screen, press Scroll button (12) until <Pr. 3> is shown and then press Enter button
(13): <AL-H> is shown.
Press Enter button (13): the programmed value starts blinking. Use the Scroll buttons (12) to modify.
Press Enter button (13) to confirm the new value and press Escape button (12) to return to previous screen.
From the screen where <AL-H> is shown, use the Scroll buttons (12) to go to <Sd-H>.
The value of <Sd-H> can be modified in a similar way.
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4 Installation
4.1 Dimension drawings
Instruction book
QED-250 and QED-300 - dimension drawing
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QED-350 up to QED-600 - dimension drawing
Reference Name
(1) Main supply electrical cable gland M25
(2) Manual drain
(3) Automatic drain
(4) Cooling air flow
(5) Air inlet
(6) Air outlet
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4.2 Installation proposal
Instruction book
Installation proposal - QED-250 and QED-300
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Instruction book
Installation proposal - QED-350 up to QED-600
Text on drawings:
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Instruction book
Reference Description
(1) Standard dryer
(2) Dryer installation proposal with reference to minimum needed free area
(3) Ventilation proposal
(4) Service side
(5) Top view
(6) Service front
(7) Air flow inlet
(8) Side view
(9) Air flow
(10) Front
(11) Floor
Instructions
Reference Description
1 The inlet grids and ventilation fan should be installed in such way that any recirculation of
the cooling air is avoided. The maximum air velocity through the grids is 5 m/s (16.5 ft/s).
The maximum allowable pressure drop over the cooling air ducts is 30 Pa (0.12 in wc).
When 30 Pa is exceeded a ventilation fan should be installed at the outlet of the cooling
air ducts.
2 Make sure all free water is removed from the compressed air before it enters the dryer.
The water separator and drain system of the dryer are not designed to handle the water
formed in the aftercooler of the compressor.
3 Make sure that no dirt particles (e.g. coming from corrosion in the compressed air network)
can enter the dryer. These particles may be harmful to the dryer's heat exchanger and the
condensate drain.
4 It is recommended to install bypass pipes over the dryer with bypass valves in order to
isolate the dryer during service operations, without disturbing the compressed air delivery.
5 Power supply cable to be sized and installed by a qualified electrician.
6 The condensate drain pipes from the dryer to the collection point must not become
submerged in the collected condensate.
Do not allow untreated condensate to enter the draining system.
7 The refrigerant dryer should be installed on a level floor suitable for taking the weight of
the dryer.
All pipes to be installed stress-free to the dryer. Do not use the dryer as support for
•
external pipes.
Avoid installation of the dryer in corrosive atmosphere.
•
The dryer is not designed for outdoor use.
•
Install a safety valve on the connection pipe between the compressor and the dryer!
•
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4.3 Electrical connections
Electrical connections
1. Provide an isolating switch nearby the dryer.
2. Check that the electric cables and wires inside the electric cabinet are clamped tight to their terminals.
3. Check the fuses and the setting of the overload relay. See section Settings of fuses.
4. On single-phase units: connect the power supply cables to terminals L1, L2 of terminal strip (1X0).
5. On three-phase units: connect the power supply cables to terminals L1, L2, L3 of terminal strip (1X0).
6. Connect the earth conductor to earth bolt (1X3).
Electrical diagram for single-phase units
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Electrical diagram for three-phase units
Typical designations used in the electrical diagrams
Reference Designation
(1) Customer’s installation
(2) Flow switch
(3) Alarm EWD
(4) Remote start/stop
B1 Electronic drain
1X0/6 Terminals
F1-6 Fuses
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Instruction book
Reference Designation
F23 Internal protection
K02 Relay ON/OFF compressor and fan
K03 Auxiliary relay, general warning
K04 Auxiliary relay, general shut-down
K05/6 Auxiliary relay, forced drain
K11 Contactor compressor
K12 Contactor fan motor
K25 Phase sequence relay
K5 Auxiliary relay (alarm functions)
M1 Compressor
M2 Fan motor
PSHH13 High pressure switch
PSR12 Fan switch
S1’ Remote start/stop
S2 Flow switch
X209 Connector
4.4 Pictographs
Pictographs
Reference Description
1 Dryer outlet
2 Dryer inlet
3 Automatic condensate drain
4 Warning: switch off the voltage, depressurise the compressor and read the instruction book
before carrying out maintenance work.
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Instruction book
Reference Description
5 Warning, voltage
6 Information label refrigerant: Contains fluorinated greenhouse gases covered by the Kyoto
Protocol.
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5 Operating instructions
5.1 Warnings
Safety precautions
The operator must apply all relevant safety precautions, including those mentioned in this manual.
Altitude operation
Consult your supplier if operating above 3000 m (9843 ft).
5.2 Initial start
Procedure
Control panel
Step Action
1 A few minutes before starting, the main supply to the dryer must be switched on to initialize
the Infologic² and the flow switch.
2 Press start button (10).
After a few seconds the dryer is started.
Three-phase units are provided with a phase sequence relay. When the dryer does not
start, switch off the voltage and reverse two incoming electric lines.
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5.3 Starting
Control panel
Instruction book
Control panel
Procedure
To prevent that wet air gets into the compressed air circuit, it is advised to follow next procedure:
Step Action
1 Switch on the main supply to the dryer a few minutes before starting, to allow the Infologic²
2 If installed, close the dryer bypass valve and the dryer outlet valve (customers installation).
3 Open the dryer air inlet valve (customers installation) and pressurize the dryer.
4 Press start button (10).
5 Approximately 5 minutes later, open the dryer air outlet valve (customers installation).
6 Approximately 10 minutes later, the dew point will be stabilized.
and the flow switch to initialize.
After a few seconds the dryer is started.
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5.4 During operation
Description
Control panel
Regularly check:
• The pressure dew point on the display of the control panel. The pressure dew point will deviate from
nominal if the air inlet conditions or volume flow differ from nominal.
• That condensate is discharged. The amount depends on the operating conditions.
5.5 Stopping
Control panel
Control panel
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Procedure
Step Action
1 Close dryer inlet and outlet valves (customer's installation).
2 Press stop button (11).
Instruction book
The dryer stops. Voltage on LED (4) remains lit. Leave the voltage on if the dryer has to
remain on stand-by.
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6 Maintenance instructions
Attention
Cooling dryers of QED type contain refrigerant HFC.
Safety precautions
When handling refrigerant, all applicable safety precautions must be observed. Please be aware of the
following points:
• Contact of refrigerant with the skin will cause freezing. Special gloves must be worn. In case of contact
with the skin, the skin should be rinsed with water. On no account may clothing be removed.
• Fluid refrigerant will also cause freezing of the eyes; safety glasses must hence be worn.
• Refrigerant is harmful. Do not inhale refrigerant vapours. Check that the working area is adequately
ventilated.
When removing the service panels of the dryer, be aware that internal elements such as the pipes can reach a
temperature of 110˚C (230˚F). Therefore, wait until the dryer has cooled down before removing the panels.
Before starting any maintenance or repair work, switch off the voltage and close the air inlet and outlet valves.
Mind the sharp edges of the fan blades in case the condenser fan needs to be replaced. The use of hand
protection is a requisite.
Local legislation
Local legislation may stipulate that:
• Work on the refrigerant circuit of the cooling dryer or on any equipment which influences its function
must be undertaken by an authorised control body.
• The installation should be checked once a year by an authorised control body.
General
The following remarks should be kept in mind:
• Keep the dryer clean.
• The dryer is equipped with a new condenser technology, which provides the best efficiency on condition
that the condenser maintenance instructions are followed closely.
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Preventive maintenance schedule
Period Operation
Daily Check that condensate is discharged during operation
Weekly Drain cleaning: open the manual drain valve during a few seconds. Hold a towel against
the drain outlet when opening.
Monthly Drain inspection: press the test button on top of the electronic water drain (EWD)
Condenser cleaning: proceed as follows:
Stop the dryer and turn off the supply voltage.
•
Remove the front service panel.
•
Remove dust from the condenser surface using a vacuum cleaner.
•
Clean the condenser by blowing compressed air from outside to inside. Keep the
•
compressed air nozzle more than 30 cm away from the condenser to avoid damaging
of the condenser fins.
Remove dust from inside the dryer, e.g. with vacuum cleaner.
•
Close the front service panel
•
Start up the dryer.
•
Do not use water or solvents to clean the condenser.
Yearly/every
8000 hours
Replace the wearing parts of the electronic water drain (service kit)
Instruction book
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Instruction book
7 Problem solving
Warnings
Before starting any maintenance or repairs, close the air outlet valve and press the
•
test button on top of the electronic water drain to depressurise the air system.
Apply all relevant instructions in section Safety precautions during maintenance or
•
repair.
Faults and remedies
Condition Fault Remedy
Pressure dew point too high Air inlet temperature too high Check and correct. If necessary,
install a pre-cooler
Ambient temperature too high Check and correct. If necessary,
draw cooling air via a duct from a
cooler place or relocate the
dryer.
Air inlet pressure too low Increase inlet pressure
Dryer capacity exceeded Reduce air flow
Shortage of refrigerant Have circuit checked for leaks
and have the refrigerant circuit
recharged
Condition Fault Remedy
Condenser pressure too high or too
low
Condition Fault Remedy
Compressor stops or does not start Electric power supply to compressor
Fan control switch out of order Replace
Fan or fan motor out of order Check fan/fan motor
Ambient temperature too high Check and correct. If necessary,
draw cooling air via a duct from a
cooler place or relocate the
dryer.
Condenser externally clogged Clean condenser
Check and correct as necessary
is interrupted
Thermic protection of refrigerant
compressor motor has tripped
On three-phase units, phase
sequence relay fault indication
Motor will restart when motor
windings have cooled down
Reverse two incoming electric
lines.
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Condition Fault Remedy
Condensate trap remains
inoperative
Condition Fault Remedy
Condensate trap continuously
discharges air and water
Condition Fault Remedy
Evaporator pressure is too high or
too low at unload
Automatic drain system clogged Flush the assembly by opening
the manual drain valve. Have
system inspected
Clean the inlet filter of the
automatic drain
Automatic drain system out of order Have system checked, if
necessary replace automatic
drain
Hot gas bypass valve incorrectly set
or out of order
Shortage of refrigerant Have circuit checked for leaks
Have hot gas bypass valve
adjusted
and recharged
Instruction book
Drain alarm visible (red light and blinking drain icon)
Condition Fault Remedy
Drain alarm No pressure in the air net Error disappears when the
Drain was not able to drain all the
water
No voltage supply to the drain Check and correct supply to the
Condition Fault Remedy
Phase sequence relay shut down (3phase units)
Condition Fault Remedy
High pressure switch has shut down
the dryer
Voltage supply connected wrong Reverse two incoming electric
Condenser pressure too high Push the small button of the high
pressure in the air net is restored
Push drain button manually.
When this occurs frequently the
drain should be replaced
drain
lines.
Also correct the rotation direction
of the fan motor; if necessary
change wiring K12:1, K12:3
pressure switch
Clean condenser
Improve ventilation of the cooling
air
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Dew point alarm visible (red light and blinking dew point icon)
Condition Fault Remedy
Dryer does not start Circuit has not cooled down Wait 1 minute before restarting
Condition Fault Remedy
Too high flow or inlet temperature too
high
Condition Fault Remedy
Phase sequence relay shut down Voltage supply connected wrong Reverse two incoming electric
Dryer undersized Try running in regular mode
the dryer
lines.
Also correct the rotation direction
of the fan motor if necessary
change wiring K12:1, K12:3
Condition Fault Remedy
High pressure switch has shut down
the dryer
Condition Fault Remedy
Dew point alarm Dew point sensor in wrong position
Electronic condensate drain
Condition Fault Remedy
No LED lights up and the drain alarm
appears on the display
Condensing pressure too high Push the small button of the high
pressure switch
Clean condenser
Improve ventilation of the cooling
air
Place the sensor in the correct
or defective
The power supply is faulty Check if the power supply
The control Printed Circuit Board
(PCB) of the drain is defective.
position or replace it.
voltage to the drain is 115V
50/60Hz
Replace the complete drain
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Condition Fault Remedy
LED L2 lights up and no drain alarm
on the display
Slow draining or no draining
Condensate is only being
•
discharged when the test button
is pressed
No condensate is being
•
discharged when the test button
is pressed
Both LED L2 on drain and the drain
alarm on the display light up
Slow draining or no draining
Note: In alarm situations, the drain valves make an automatic series of
forced openings (2 seconds ON; 2 seconds OFF)
The feed line has insufficient slope Lay the feed line with an
adequate slope
The outlet line is partially blocked Check the outlet line
Excessive amount of condensate Check if the venting line is
properly installed
Check if the maximum drain
capacity of 15 litres/hour is not
exceeded. Make sure all free
water is removed from the
compressed air before it enters
the dryer.
The air pressure has dropped below
the minimum pressure
The drain filter is blocked by dirt Open the manual drain valve to
The feed and/or outlet line is shut off
or blocked
Wear Order the wear kit and substitute
The control Printed Circuit Board
(PCB) of the drain is defective
Note: Drain alarm on display lights up after a series of 30 forced
openings (2 seconds ON; 2 seconds OFF). The drain will now start a
second series of forced openings with a different regime (3 seconds ON;
60 seconds OFF).
Irreversible drain fault Reset the drain by holding the
Ensure there is the minimum
pressure
clean the drain filter
Check the feed line and the outlet
line
all the parts included
Replace the complete drain
test button pressed for at least 5
seconds. Should the problem
persist, replace the drain.
Instruction book
All above remedies were
•
checked and did not lead to
solution of the problem
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Instruction book
8 Technical data
8.1 Settings of fuses
Overload relay and fuses
QED-250 QED-300 QED-350
Frequency (Hz) Voltage (V) Main fuses, supply
60 220 20 20 25
QED-450 QED-500 QED-600
Frequency (Hz) Voltage (V) Main fuses, supply
60 460 16 16 16
line (A)
line (A)
Main fuses, supply
line (A)
Main fuses, supply
line (A)
Main fuses, supply
line (A)
Main fuses, supply
line (A)
8.2 Reference conditions and limitations
Reference conditions
Unit 60 Hz
Compressed air inlet pressure bar(e) 7
Compressed air inlet pressure psig 101.53
Compressed air inlet temperature °C 38
Compressed air inlet temperature °F 100.4
Ambient temperature °C 38
Ambient temperature °F 100.4
Relative humidity at inlet % 100
Pressure dew point °C 4
Pressure dew point °F 39.2
Cooling air inlet temperature °C 38
Cooling air inlet temperature °F 100.4
Limits
Unit 60 Hz
Maximum compressed air inlet pressure bar(e) 14
Maximum compressed air inlet pressure psig 203
Minimum ambient air temperature °C 1
Minimum ambient air temperature °F 34
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Unit 60 Hz
Maximum ambient air temperature °C 50
Maximum ambient air temperature °F 122
Minimum compressed air inlet temperature °C 1
Minimum compressed air inlet temperature °F 34
Maximum compressed air inlet temperature °C 60
Maximum compressed air inlet temperature °F 140
8.3 Air dryer data
All data specified below apply under reference conditions, see section Reference
conditions and limitations.
Specific data
Instruction book
Air dryer type Units QED-250 QED-300 QED-350
Volume flow at dryer inlet 60 Hz l/s 120 150 185
Volume flow at dryer inlet 60 Hz cfm 254 318 392
Pressure drop over dryer without filters,
approx.
Pressure drop over dryer without filters,
approx.
Total power consumption, including cooling fan 60 Hz kW 1.5 1.5 2.3
Total power consumption, including cooling fan 60 Hz hp 2.28 3.22 3.08
Refrigerant type R410a R410a R410a
Refrigerant charge (approx.) kg 0.86 0.86 0.92
Refrigerant charge (approx.) lb 1.90 1.90 2.03
Dryer mass (approx.) kg 170 170 185
Dryer mass (approx.) lb 375 375 408
Air dryer type Units QED-450 QED-500 QED-600
Volume flow at dryer inlet 60 Hz l/s 220 245 285
Volume flow at dryer inlet 60 Hz cfm 466 519 604
Pressure drop over dryer without filters,
approx.
Pressure drop over dryer without filters,
approx.
Total power consumption, including cooling fan 60 Hz kW 2.5 2.9 3.1
Total power consumption, including cooling fan 60 Hz hp 3.49 3.89 4.16
Refrigerant type R410a R410a R410a
Refrigerant charge (approx.) kg 1.55 1.20 1.28
Refrigerant charge (approx.) lb 3.42 2.65 2.82
60 Hz bar 0.11 0.14 0.22
60 Hz psi 1.60 2.03 3.19
60 Hz bar 0.12 0.18 0.22
60 Hz psi 1.74 2.61 3.19
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Instruction book
Air dryer type Units QED-450 QED-500 QED-600
Dryer mass (approx.) kg 197 197 197
Dryer mass (approx.) lb 434 434 434
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9 Pressure equipment directives
Components subject to 97/23/EC Pressure Equipment Directive
Components subject to 97/23/EC Pressure Equipment Directive greater than or equal to category II
Dryer type Part number Description PED Class
QED-250 up to QED-600 1089 9139 14 High pressure switch IV
QED-250 and QED-300 1624 2274 00 Heat exchanger II
QED-350 1624 2275 00 Heat exchanger II
QED-450 up to QED-600 1624 2276 00 Heat exchanger II
Overall rating
The dryer is conform to PED category II.
Instruction book
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Instruction book
10 Declaration of conformity
Typical example of a Declaration of Conformity document
(1): Contact address:
Quincy Compressor
701 North Dobson Avenue
Bay minette, AL 36507
United States
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Page 65
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Performance You Demand. Reliability You Trust.
No. 2920 7103 90 / 2011 - 11 - Printed in Belgium
www.quincycompressor.com
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