BeaconMedaes HTM User manual

BeaconMedaes
Dual medical air purifiers
HTM - dMED 025, dMED 035, dMED 046, dMED 075, dMED 090,
dMED 110, dMED 150, dMED 220, dMED 300
NFPA - dMED 025, dMED 035, dMED 075, dMED 090, dMED 110,
dMED 150, dMED 220
Instruction book

BeaconMedaes
Dual medical air purifiers
HTM - dMED 025, dMED 035, dMED 046, dMED 075,
dMED 090, dMED 110, dMED 150, dMED 220, dMED 300.
NFPA - dMED 025, dMED 035, dMED 075, dMED 090,
dMED 110, dMED 150, dMED 220
Instruction book
Original instructions
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.
2019 - 10
No. 4233 5000 13- 01
www.beaconmedaes.com

2
2212 0215 19
Table of contents
1 Safety precautions. ....................................................................................................... 4
1.1 Safety icons.................................................................................................................................. 4
1.2 Safety precautions, general.......................................................................................................... 4
1.3 Safety precautions during installation........................................................................................... 5
1.4 Safety precautions during operation............................................................................................. 6
1.5 Safety precautions during maintenance or repair......................................................................... 7
2 General description....................................................................................................... 9
2.1 Introduction ................................................................................................................................... 9
2.2 Air flow........................................................................................................................................ 11
2.3 Water separator and filters ......................................................................................................... 12
2.4 PD dryer...................................................................................................................................... 13
2.5 QDT+ filter .................................................................................................................................. 15
2.6 Electrical diagrams ..................................................................................................................... 15
2.7 Optional equipment .................................................................................................................... 16
3 Purifier main controller ............................................................................................... 19
3.1 Interface, icons and menu structure ........................................................................................... 19
3.2 Purifier controller operation......................................................................................................... 24
3.3 Service menu ............................................................................................................................. 44
4 DIN rail controller ........................................................................................................ 45
4.1 Interface, icons and menu structure ........................................................................................... 45
4.2 DIN rail controller operation ........................................................................................................ 47
5 Installation ................................................................................................................... 51
5.1 Dimension drawings ................................................................................................................... 51
5.2 Installation proposal ................................................................................................................... 52
5.3 Electrical connections................................................................................................................. 54
5.4 Purge pressure setting ............................................................................................................... 54
5.5 Pictographs................................................................................................................................. 58
6 Operating instructions. ............................................................................................... 59
7 Maintenance................................................................................................................. 65
7.1 Service agreements ................................................................................................................... 65

2212 0215 19
3
7.2 Maintenance instructions............................................................................................................ 65
7.3 Service kits ................................................................................................................................. 67
7.4 Storage after installation ............................................................................................................ 67
7.5 Disposal of used material ........................................................................................................... 68
8 Adjustments and servicing procedures. ................................................................... 69
8.1 Servicing the water separator drain............................................................................................ 69
8.2 UD+ and PDp+ filter change....................................................................................................... 70
8.3 Dryer desiccant change ............................................................................................................. 71
8.4 QDT+ filter maintenance ............................................................................................................ 72
8.5 Testing the electronic drain valve............................................................................................... 73
8.6 Purge Plug dMED 025 & 035...................................................................................................... 74
8.7 Purge Plug dMED 045 to 300 ..................................................................................................... 75
9 Problem solving. ......................................................................................................... 77
10 Technical data. ............................................................................................................ 80
10.1 Fuse values ................................................................................................................................ 80
10.2 Electric cable size ...................................................................................................................... 80
10.3 Device settings ........................................................................................................................... 80
10.4 Reference conditions and limitations.......................................................................................... 81
10.5 Technical data ............................................................................................................................ 81
11 European Directives.................................................................................................... 86
11.1 Instructions for use..................................................................................................................... 86
11.2 Pressure equipment directives................................................................................................... 91

4
2212 0215 19
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 air purifier units are designed for normal indoor use.
2. Installation, operation, maintenance and repair work must only be performed by authorised,
trained, specialised personnel.
3. Portable and mobile RF communications equipment can affect the unit. They should be used
no closer to any part of the unit, including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of the transmitter (see EN 60601).
4. The operator must employ safe working practices and observe all related work safety
requirements and regulations:
•Wear ear protectors if applicable. People staying in environments or rooms where the
sound pressure level reaches or exceeds 90 dB(A) shall wear ear protectors.
•Never remove or tamper with the safety devices. 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.
•Proper protective clothing (face mask, eye protection, overall, disposable gloves and
apron) must be worn when installing, servicing or handling this equipment.
•Danger to health during inspection, cleaning or replacement and danger to the
environment: Contaminated filter elements, inlet screens, non-return valves or other
components must be disposed of using the hospital procedure for contaminated waste.
Drain flasks must be sterilised using hospital equipment and procedures. Any type of
particles or liquid within a drain flask or inlet screen must be treated as potentially
biologically contaminated. Any moisture drained from vessels or other drain points must be
treated as biologically contaminated. Prior to transportation, items will be decontaminated
as well as possible and the contamination status shall be stated in a “Declaration of
Contamination” form (see annex).

2212 0215 19
5
•Immediately upon completion of work, remove any contaminated clothing and wash
hands (and, if necessary, contaminated tools) in a 2% glutaraldehyde solution and rinse
under running water.
•A checklist / logbook will be made wherein the installer will mark the adherence of the
installation to the commissioning chapter of the instruction book.
•A validation of the quality of the air at the outlet should be carried out before the unit is
put into operation.
5. If any of the following statements does not comply with the applicable legislation, the stricter of
thetwo shall apply.
6. Installation, operation, maintenance and repair work must only be performed by
authorized, trained, specialized personnel.
7. A compressor 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.
8. Before any maintenance, repair work, adjustment or any other non-routine checks, stop the
equipment, press the emergency stop button, switch off the voltage and depressurize the
equipment. In addition, the power isolating switch must be opened and locked.
9. 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.
10. The owner is responsible for maintaining the dryer in safe operating condition. Parts and
accessories shall be replaced if unsuitable for safe operation.
11. It is not allowed to walk or stand on the equipment or its components. Protect the equipment
against falling objects.
1.3 Safety precautions during installation
1. The equipment 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. Install the equipment where the ambient air is as cool and clean as possible and within the
limitations for operation. It shall be protected from rain, snow or other precipitation and the
distances to walls shall be respected. Make sure that the environment is not potentially
explosive.
Make sure that the ambient condition limits specified in the limits for operation are not
exceeded during the course of the plant lifetime and that they comply with the protection class
of the unit.
Care must be taken to minimize the entry of moisture or any other impurities (e.g. internal
combustion engine exhaust, vehicle parking, access areas, hospital waste and disposal
systems, vacuum system exhausts, vents from medical gas pipeline systems, anaesthetic gas
scavenging systems, ventilation system discharges, chimney outlets and other sources of
contamination) at the inlet of the compressor.
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 air, aspirated by the compressor, must be free of flammable fumes, vapours and particles
(e.g. paint solvents) that can lead to internal fire or explosion.

6
2212 0215 19
6. Portable and mobile RF communications equipment can affect the unit. They should be used
no closer to any part of the unit, including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of the transmitter (See EN 60601).
7. No external force may be exerted on the inlet and outlet piping. The connections must be free
of strain.
8. If remote control is installed, the machine must bear a clear sign stating "Danger: This machine
is remotely 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.
9. 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.
10. The electrical connections must be made in accordance with 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.
11. 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.
12. 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.
13. 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.
14. 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.
15. 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.
16. 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.
Also consult sections General 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 equipment.
1.4 Safety precautions during operation
1. Always be careful when touching any piping or components of the dryer during operation.
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.

2212 0215 19
7
4. Never operate the equipment in the presence of 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. Do not remove any of, or tamper with, the sound-dampening material.
10. 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.
All regulating and safety devices shall be maintained with due care to ensure that they function
properly.
11. To safeguard correct operation of the equipment it is recommended to:
•Monitor the outlet dew point at all occasions.
•When possible, install a CO sensor/monitor with alarms.
•The unit must be installed in a network which complies with the legislation Medical
Devices Directive 93/42/EC and with the harmonized standard EN ISO 7396-1.
Also consult sections
General 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
whi
ch are not included herein.
Some precautions are general and cover several machine types and equipment; hence
some statements may not apply to your equipment.
1.5 Safety 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.
During use, it is possible that tools will become contaminated with oil or grease. It is therefore
important that tools are cleaned and degreased following any maintenance operation,
especially if the same tools are subsequently used with an Oxygen System. When the tools
come into contact with possible bacteria contaminated parts (e.g. if the bacterial filters were
ruptured), they must be sterilised after completion.
3. Use only genuine spare parts.
4. All maintenance work shall only be undertaken when the machine has cooled down and is
depressurized.
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
2212 0215 19
8. Before removing any pressurized component, effectively isolate the machine from all sources
of pressure and relieve the entire system of pressure. Before disconnecting any piping,
pneumatically isolate the section and slowly bring the pressure to atmospheric pressure. Do
not suddenly open any isolating valve that may cause rapid evacuation of any section that may
be at high pressure. Open valves slowly and allow sufficient time for the pressure to stabilise.
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 equipment.
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 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.
Also consult sections General 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 equipment.

2212 0215 19
9
2 General description
2.1 Introduction
Description
High quality air is of vital importance to many industries, but nowhere as literally as in the medical
sector. The purity of the compressed air for certain hospital applications is crucial. The air drawn
from our environment however, especially in cities or industrial areas, is rarely of a sufficient
quality for medical purposes.
For this application, BeaconMedæs has designed the dual medical air purifier range. The purifier
takes air from any regular compressor and treats it to become ultra clean. It consists of a number
of components, which together, after the commissioning certification, produce air with a quality
matching the Pharmacopoeia legislation.
The purifier is primarily aimed at the health care sector where applications like breathing air in
operating theatres and surgical air to drive surgical tools demand high quality air.
•A purifier consists of 2 independent air treatment units, each consisting of following stages of
cleaning:A water separator (WSD) to eliminate free water from the compressed air, thus
ensuring good operation of the desiccant dryer.
•A coalescing filter (UD+ filter) to remove contaminating particles and oil droplets.
•A desiccant dryer (PD dryer) to lower the pressure dew point (PDP) to -40 ˚C (-40 ˚F),
eliminating the risk of condensation and strongly reducing water-related problems like bacteria
growth.
•The QDT+ filter reduces hydrocarbons like oil vapour and smells to harmless levels and converts
excessive concentrations of CO into CO2where the hopcolite catalyst filter is fitted.
•A particle filter (PDp+ filter) to eliminate particles that may have migrated out of the desiccant
dryer.
Both units are controlled by a central controller (ES-MED). This central controller activates one
unit and will switch to the other one after a certain amount of time has elapsed. This guarantees
a constant delivery of purified air and also ensures service can be performed on one unit whilst
the system is still operating. At all times an indication of dew point and pressure can be retrieved
from the display.
Key qualities
• Pharmacopoeia compliant:
• The European Pharmacopoeia legislation accurately defines the required quality for
breathing air in hospitals, medical theatres and ambulatory centres. BeaconMedæs has
adopted this quality level for the purifier range.
• Company certification according to EN ISO 13485:
Hospital equipment with an influence on patient health must be certified to the Medical
Devices Directive (MDD 93/42/CE). This requires that the manufacturer is certified according
to EN ISO 13485 and organises strict product follow-up once in the field.

10
2212 0215 19
General views
1 Air inlet 7 Dew point sensor (2)
2 Water separator (WSD) 8 PDp+ filter
3 UD+ filter 9 Regulator (1)
4 Inlet Solenoid 10 Relief valve
5 PD dryer 11 Air outlet valve
6 QDT+ filter 12 ES-MED controller
(1) –Regulator is fitted to all HTM models. Regulator is not fitted to NFPA instrument air models.
(2) - Dewpoint sensor
a. HTM models set to read atmospheric dew point.
b. NFPA models set to read pressure dew point.
Important
The dual medical air purifier unit is designed, manufactured and inspected
according to the legislation mentioned.
Always consult the local legislation on this topic, since
the specifications of the air quality
can be different.
A purifier unit is considered as an active medical device, relying on a source of electrical
energy for its operation.
9
10
7
4
1
6
2
8
3
11
12

2212 0215 19
11
2.2 Air flow
Flow diagram (example image showing PD3 type dryer)
Note –Pressure regulator (5) is only fitted to HTM models, is not present on NFPA instrument air units.
Description
Compressed air enters water trap (WSD), eliminating liquid water from the air. Next, the air
flows through UD+ filter, removing contaminating particles and oil mist. The air then enters
the PD dryer, eliminating water damp and producing dry air with a pressure dew point of
minimum -31 ˚C (-23.8 ˚F). Next is the QDT filter where oil vapour and smells of the dried air
are reduced (active carbon) and where the conversion of CO into CO2 takes place (optional
catalyst in QDT+). Finally the air flows through the PDp+ filter, hereby eliminating remaining
dust particles for absolute purity.
Pressure switch (21) operates as an hardwired alarm in case a failure with the ES-MED
controller should occur. Should the ES-MED fail to operate the compressors, resulting in a
decrease of the pressure, each compressor will start to operate independently once their
outlet pressure reaches a certain critical pressure level (emergency forced local). The
pressure switch, installed on the inlet of the purifier, thus linked to the outlet pressure of each
compressor will also be triggered at this pressure level, resulting in a Plant fault being
transmitted to the building management system.
Specifications of the outlet air can be found in section Reference conditions and limitations.

12
2212 0215 19
2.3 Water separator and filters
Overview
Water separator with drain (WSD) (1)
WSD’s are general purpose water separators for removal of free water from compressed air.
Centrifugal force created in the cyclone throws free water (droplets) to the wall, from where it flows
down to the bottom of the bowl. The water is automatically discharged when a given level is
reached. A drain valve is provided for manual draining of the bowl.
UD+ filter (2)
The UD+ filter combines two filtration steps into one, removing oil aerosols to 0.01 mg/m3 (0.01
ppm) and particles down to 0.01 micron. The filter is equipped with a drain. Typical pressure drop
over filter is 0.08 bar (1.16 psi) when dry and 0.2 bar (2.9 psi) when saturated.
The air flow is from inside to outside the filter element.
PDp+ filter (7)
The PDp+ is a high efficiency particle filter for dust protection, removing particles down to 0.01
micron. Pressure drop over filter is 0.08 bar (1.16 psi) when dry.
The air flow is from outside to inside the filter element.
The UD+ and PDp+ filters are equipped with a differential pressure gauge, indicating the
pressure drop over the filter.
An electronic water drain (EWD) on the water separator, on the UD+ filter can be
provided as option (see section Optional equipment).
1
2
7

2212 0215 19
13
2.4 PD dryer
Description
The construction of the air dryer is simple, reliable and easy to service. A dryer basically
consists of two vertical cylinders (towers), containing the adsorption material (desiccant). This
desiccant is a very porous grain material, able to adsorb large amounts of water vapour.
PD3 type dryer (dMED 046, dMED 075, dMED 090, dMED 110, dMED 150, dMED 220, dMED 300)
PD1 type dryer (dMED 025, dMED 035)

14
2212 0215 19
Operation principle
The operation cycle of the dryer is repetitive and is controlled by a factory-set timer,
programmed in the controller.
While the desiccant in one tower dries the compressed air, the desiccant in the second
tower is being regenerated. Regeneration of the desiccant is achieved by means of purge
air from the drying tower.
The compressed air entering the dryer is led to one of the towers by means of the inlet
selector valve. The position of the selector valve depends on the condition (activated or
not) of the solenoid valves. While the air flows upwards through the tower, the desiccant
adsorbs the water vapour and the compressed air is dried.
The dried air leaves the dryer via the outlet selector valve.
A small portion of the dried air passes a nozzle (8 for PD3, 7 for PD1), expands to
atmospheric pressure and flows downwards through the other tower, regenerating (drying)
the desiccant.
The regeneration air is released via the solenoid valve and the silencer of the regenerating
tower. The solenoid valves are controlled by the controller.
After a pre-set period, the function of the towers is reversed. The fully regenerated tower
will now dry the air, while the desiccant in the other tower will be regenerated.
By default, the regeneration timer will restart from the beginning of the cycle in case of a
power failure during operation.
Purge control
The dryer is equipped with a dew point sensor, extending the drying time and saving
compressed air. The regeneration time remains timer controlled.
Operation principle:
The sensor constantly measures the atmospheric dew point of the air leaving the drying tower.
While the dew point is measured below the purge saver set point the dryer will continue to supply dry air,
but the purging of the regenerating tower will be de-active. Once the dew point rises above the set point
the purge cycling function will become active.

2212 0215 19
15
2.5 QDT+ filter
Air flow
Reference Name
A Air inlet
B Air outlet
1 Activated carbon
2 Catalyst (optional)
Description
The dried compressed air enters the QDT+ filter
A QDT+ filter contains active carbon, reducing volatile organic compounds (VOC) and
hydrocarbons (odours, oil vapours) to harmless levels, and as an option a catalyst material,
converting excessive concentrations of CO into CO2.
Depending on the size of the unit, the QDT+ filter consists of one, two or three cylinders.
2.6 Electrical diagrams
The service diagram can be found in the purifier’s control box.

16
2212 0215 19
2.7 Optional equipment
Precautions
1. Make sure that all electrical wiring is installed in compliance with the applicable
regulations.
2. Installation must always be performed by a qualified technician.
3. Installation must be carried out in compliance with the circuit diagrams and
connection
drawings provided.
Some precautions are general and may not apply to your optional equipment.
All responsibility for any damage or injury resulting from neglectin
g 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.
Available options
•Electronic drain (EWD)
The electronic drain is optional on the WSD and the UD filter.
The electronic drain is a zero-loss, electronically operated drain valve, specially designed to
drain oil and water. A sensor detects the liquid level. If the level exceeds a preset value during
a fixed programmed time, a solenoid valve is activated, and the condensate is discharged via
drain outlet (6). Next, the solenoid valve closes, and condensate is collected again. This way,
the loss of air is reduced to a minimum.

2212 0215 19
17
If the micro-controller of the EWD registers a malfunction, the automatic drain valve will
automatically change to alarm mode, visible on the display (5). This alarm signal can be
relayed via a potential-free contact.
EWD electrical connections
Reference Name Reference Name
L Phase NO Normally open contact
N Neutral COM Common
PE Earthing NC Normally closed contact
(1) Only on EWD 50 A
Extra electric wiring to connect
the
potential-free contacts and an
external test button can be
provided.
Always remove the manual or automatic drain of the water separator (WSD) or the filter
(UD+) when installing an EWD.
For detailed installation instructions, consult the Instruction Book of the EWD.
•CO sensor
The CO sensor is connected to the purifier’s controller and will trigger an alarm when the CO
level exceeds 5 ppm.

18
2212 0215 19
•CO2sensor
The CO2sensor is connected to the purifier’s controller and will trigger an alarm when the CO2
level exceeds 500 ppm.
•QDT oil indicator
An oil indicator is available as an option to control the purity of the air. The oil indicator is a
calibrated measuring instrument, used to detect aerosol-mist levels of oil entrainment that may
be present in compressed air systems. Sensitivity of the indicator is limited only by the total
number of hours it is allowed to remain on the air supply system. The indicator is sensitive
enough to measure a concentration of oil entrainment as low as 0.01 ppm. This sensor will
indicate when the activated carbon is saturated and needs to be replaced. The oil indicator has
a maximum pressure of 8.75 bar (127 psi).
•QDT+ filter with CO catalyst
A catalyst that converts CO into CO2is available as option (QDT+ filter). This option is strongly
recommended in polluted areas and makes sure that the air quality will always comply with the
Pharmacopoeia.