Page 1
Operating manual
Revision 03—07/2016 /EN
Cod: 398H271785
Adsorption dryer
WVM 40-1450
Page 2
Declaration of Conformity
W___ES
W___VM
W___KL
W___KT
pressure (PS)
[l]
(PED)
WVM 40 2 10
130
III
H
WVM 50 2 10
130
III
H
WVM 65 2 10
206
III
H
WVM 85 2 10
206
III
H
WVM 120 2 10
305
IV
H 1
WVM 150 2 10
376
IV
H 1
WVM 200 2 10
530
IV
H 1
WVM 235 2 10
627
IV
H 1
WVM 300 2 10
760
IV
H 1
WVM 355 2 10
994
IV
H 1
WVM 410 2 10
1134
IV
H 1
WVM 475 2 10
1324
IV
H 1
WVM 525 2 10
1436
IV
H 1
Parker Hannifin Manufacturing Germany GmbH& Co. KG
Gas Separation and Filtration Division EMEA
Im Teelbruch 118
D – 45219 Essen Kettwig
hereby declares with sole responsibility, that the products
compressed air adsorption dryer
series
size 40 bis 7900
assembly type: assembly acc. to Art. 4 No. 2b,
which this declaration refers to, conform to Directive 2014/68/EU and were
subjected to a conformity assessment according to Annex III Modules B + D (for
assembly assessment).
For the assembly, the EG type approval certificate DTM 1016032/1/AS
by Lloyd’s Register Quality Assurance GmbH, Hamburg, is available.
The quality assurance system is monitored by the service provider stated below
Lloyd’s Register Quality Assurance GmbH (Identification number 0525)
Am Sandtorkai 41, D - 20457 Hamburg.
The assembly consists of pressure appliances according to the classification list
(attached to the technical documentation provided by the manufacturer).
Pressure vessel
Dryer Quantity
Allowable
Volume
Category
Module
Page 3
Pressure vessel
pressure (PS)
[l]
(PED)
WVM 620 2 10
2011
IV
H 1
WVM 710 2 10
1963
IV
H 1
WVM 800 2 10
2406
IV
H 1
WVM 920 2 10
2650
IV
H 1
WVM 1080 2 10
3085
IV
H 1
WVM 1230 2 10
3085
IV
H 1
WVM 1450 2 10
3085
IV
H 1
WVM 40
10
DN40
Art.4.3
Art.4.3
WVM 50
10
DN40
Art.4.3
Art.4.3
WVM 65
10
DN50
Art.4.3
Art.4.3
WVM 85
10
DN50
Art.4.3
Art.4.3
WVM 120
10
DN80
Art.4.3
Art.4.3
WVM 150
10
DN80
Art.4.3
Art.4.3
WVM 200
10
DN80
Art.4.3
Art.4.3
WVM 235
10
DN100
Art.4.3
Art.4.3
WVM 300
10
DN100
Art.4.3
Art.4.3
WVM 355
10
DN100
Art.4.3
Art.4.3
WVM 410
10
DN150
I
A
WVM 475
10
DN150
I
A
WVM 525
10
DN150
I
A
WVM 620
10
DN150
I
A
WVM 710
10
DN150
I
A
WVM 800
10
DN200
I
A
WVM 920
10
DN200
I
A
WVM 1080
10
DN200
I
A
WVM 1230
10
DN250
I
A
WVM 1450
10
DN250
I
A
Dryer Quantity
Allowable
Volume
Category
Module
Piping
Dryer Allowable
pressure (PS)
Dimensions
(DN)
Category
(PED)
Module
Page 4
Filter
WVM 40
GL 12 2 16 6 I
B+D
WVM 50
GL 12 2 16 6 I
B+D
WVM 65
GL 13 2 16 6 I
B+D
WVM 85
GL 14 2 16 6 I
B+D
WVM 120
FL 17 2 16
16
II
H
WVM 150
FL 17 2 16
16
II
H
WVM 200
FL 17 2 16
16
II
H
WVM 235
FL20 2 16
57
II
H
WVM 300
FL20 2 16
57
II
H
WVM 355
FL20 2 16
57
II
H
WVM 410
FL30 2 16
57
II
H
WVM 475
FL30 2 16
57
II
H
WVM 525
FL30 2 16
57
II
H
WVM 620
FL30 2 16
57
II
H
WVM 710
FL40 2 16
93
III
H
WVM 800
FL60 2 16
165
III
H
WVM 920
FL60 2 16
165
III
H
WVM 1080
FL60 2 16
165
III
H
WVM 1230
FL100 2 16
280
III
H
WVM 1450
FL100 2 16
280
III
H
Essen,
19.07.2016
Manager Engineering and Development
Dryer Filter Quantity Allowable
pressure (PS)
Volume
[l]
Category
(PED)
Module
The following standards / technical specifications were used:
harmonized standards: DIN EN ISO 12100:2011-03, DIN EN 61000-6-1,
DIN EN 61000-6-3, DIN EN 60204
The following other EG directives were used:
2006/42/EG
2014/30/EG
2014/35/EG
Datum / Date i. V. Dr. Jürgen Timmler
Leiter Technik und Entwicklung /
Page 5
Machine Passport
Order No.
Catalogue No.
Manufacture No.
Vessel 1 No.
Date of issue this Operating Manual
2016-12 EN
Machine Type WVM
Vessel 2 No.
Date of Manufacture 2016
The operator is obliged to
enter missing unit data in the above table,
regularly update the unit data.
The above device specifications are necessary to quickly identify the dryer and its
components and facilitate servicing.
Other important data regarding the dryer such as permitted operation pressure
and electrical power are found on the type plate. (For location of the type plate,
see page 11.)
Page 6
Table of contents
General information ............................................................................................ 8
Manufacturer's details ............................................................................................................ 8
Dryer Specifications ............................................................................................................... 8
About these operating instructions.......................................................................................... 9
For your own safety .......................................................................................... 11
Signs and danger zones at the dryer .................................................................................... 11
Intended use of the dryer ...................................................................................................... 13
General safety notes ............................................................................................................ 13
Safety notes on specific operating phases ............................................................................ 14
Technical product description ......................................................................... 17
Summary drawing ................................................................................................................ 17
Function ............................................................................................................................... 19
Options ............................................................................................................... 22
Transportation, installation and storage ......................................................... 25
What to do in the case of transport damage occurring? ........................................................ 25
Transporting dryer to its location of installation ..................................................................... 26
Storage ................................................................................................................................ 29
Installation .......................................................................................................... 31
Requirements for installation ................................................................................................ 31
Installation of pipelines ......................................................................................................... 33
Connection of electrical components .................................................................................... 34
Start-up ............................................................................................................... 35
Requirements for initial commissioning ................................................................................ 35
Overview of the operating and display elements................................................................... 36
Commissioning of the dryer .................................................................................................. 36
Preparation for commissioning ............................................................................................. 37
Monitoring dryer operation ............................................................................... 41
Notes on specific operating situations .................................................................................. 41
Shutdown and restart dryer .............................................................................. 42
Emergency shutdown ........................................................................................................... 42
Stopping the dryer ................................................................................................................ 42
Depressurising and shutting down the dryer ......................................................................... 43
If work is to be carried out on the electrical system ............................................................... 44
Restart ................................................................................................................................. 44
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Maintenance and repair of the dryer ................................................................ 45
Notes on maintenance ......................................................................................................... 45
Regular maintenance tasks.................................................................................................. 46
Daily maintenance tasks ...................................................................................................... 47
Monthly maintenance ........................................................................................................... 48
Six-monthly maintenance work ............................................................................................ 48
Maintenance work to be completed every 12 months........................................................... 49
Maintenance work to be completed every 24 months........................................................... 51
Maintenance work to be completed every 48 months........................................................... 51
Identify and eliminate faults ............................................................................. 55
Notes on error messages and errors .................................................................................... 56
Index ................................................................................................................... 57
Appendix: Technical Documents ..................................................................... 60
Technical data – overview of standard dryers ...................................................................... 61
Spare parts list ..................................................................................................................... 63
Page 8
General information
Manufacturer's details
Name and address
Dryer Specifications
Scope of delivery
Adsorption dryer, consisting of
2 vessels filled with desiccant
1 Heater
1 Vacuum pump
1 Switch cabinet including control system
1 Key for switch cabinet
Piping and silencer
Supplementary documents (standard scope)
Operating manual (i.e. this document)
Operating manual of pertaining controller
Operating manual of fitted vacuum pump
Technical documents (see appendix)
— Dimensional drawing
— Process diagram
— Pneumatic diagram of the control air unit
Electrical diagrams
8 WVM_BASIS_EN_03—07/2016
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Notes on supplementary documents
Supplementary documents such as operating manuals for options or
pertaining components must always be heeded. They contain additional
information, e.g. regarding maintenance, and are therefore necessary for safe
operation of the plant.
Notes on upstream and downstream filters
Upstream and downstream filters are not contained in the standard scope of
delivery of the dryer. For this reason, the operator must install at least an
upstream filter. Please also heed the notes regarding the intended use on
page 13.
Warranty notes
In the following cases, the warranty shall be void:
If aggressive media in the compressed air and in the environment cause
corrosion damage and functional faults on the dryer.
If the dryer is used without prior approval and confirmation in writing by the
manufacturer for purposes other than those specified in these operating
instructions or contractually agreed.
If preset parameters (e. g. on the control system etc.) are changed without
prior approval and confirmation in writing by the manufacturer.
If the dryer is transported or stored incorrectly.
If the dryer is sited and installed incorrectly.
If the dryer is repaired or maintained incorrectly.
If the dryer is operated by personnel that does not have the requisite
qualifications.
If modifications are carried out on the dryer, the manufacturer did not approve
that.
If notes given in pertaining operating manuals were not heeded.
In the event of non-compliance the manufacturer will not accept any liability for
any consequential damage whatsoever.
About these operating instructions
These operating instructions contain basic information on the safe use of the
dryer.
Characters and symbols used
► Work steps that you have to carry out in the sequence stated are marked by
black triangles.
Lists are marked by a small box.
WVM_BASIS_EN_03—07/2016 9
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Note:
These notes provide you with hints and information on the safe and
efficient handling of machines and devices.
Warning!
These safety notes warn against damage to property and help you to
avoid such damage.
Danger!
These danger notes with a grey background warn against personal injury
and/or danger to life and limb; danger notes help you to avoid serious or
life-threatening situations for yourself and/or third parties.
Target group of these operating instructions
These operating instructions are intended for all persons working on and using
the dryer. We assume that all such persons are specialist personnel, e.g. fitters
or electricians.
Operating instructions: handling
These operating instructions must be continuously available at the site where the
dryer is used. We recommend to prepare a copy and to keep the same in a safe
and freely accessible place next to the dryer. Keep the original document in a
safe place.
10 WVM_BASIS_EN_03—07/2016
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1
2
For your own safety
The dryer has been built in accordance with the state of the art and the
recognized technical safety regulations. Nevertheless, there is a risk of personal
injury and damage to property when the dryer is used, if
it is operated by non-qualified personnel,
not used within its intended design specifications,
is repaired or maintained incorrectly.
Note:
Signs and danger zones at the dryer
For your own safety and to prevent machine damage, please note the
information and safety notes in these operating instructions when
working with the dryer.
Signs and instructions
Type plate
Vessel plate
Please note the above plates and instructions attached to the dryer. Make sure
WVM_BASIS_EN_03—07/2016 11
they are always complete and readable.
Page 12
Danger zones at the dryer
Risk of injury from hot vessel and piping surfaces
1, 6
Risk of injury by high voltage
2
Risk of injury from crushing by shaft during switching
3
Risk of injury by suddenly escaping gas
4
Risks of injury by hot regeneration gas flow
5
Risk of injury by blocked silencer
7
Danger zone
Excess pressure warning
The entire dryer is under pressure. Air that is suddenly released through expansion and relief
valves can lead to serious injury.
Hot surfaces
During operation, certain surfaces of the dryer reach temperatures above 120 °C. At insulated
dryers, screw connections might protrude from the insulation.
Voltage
Various parts of the dryer are live. These components may only be connected, opened and
serviced by authorised technical personnel.
Risk of slipping
During the emptying and filling of the vessels, there is a risk of injury from slipping on spilt
desiccant.
Symbol in this
manual
Risk of crushing
At the universal shaft and the drives, there is a risk of injury from crushing during the switching
from absorption to regeneration.
12 WVM_BASIS_EN_03—07/2016
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Intended use of the dryer
The dryer is exclusively intended for drying compressed air. Depending on
defined input conditions, it dries compressed air for industrial use.
The dryer is designed for compressed air, which is free from aggressive water,
oil, and solid matter constituents.
Note:
Never operate the dryer without upstream filter. For this reason, the
operator must install an appropriate upstream filter (degree of
filtration < 0.01 µm, residual oil contents < 0.001 mg/m³).
We recommend that you install an additional downstream filter to
protect the downstream compressed air network against desiccant
residues.
Suitable filter solutions can be obtained from the manufacturer.
As standard, the dryer is intended to be sited within a building and protected
against the weather. When it is sited in the open air (option), the instructions on
page22 must be complied with.
The dryer may be operated only in accordance with the data on the type plate
and in accordance with the contractual conditions.
Suspected misuse
The dryer must not be misused as a climbing aid! Pipes, valves, and similar
fittings have not been designed for such loads. They could fracture, tear off, or
become damaged in another way.
General safety notes
For your own safety, when carrying out any work on the dryer comply with
all applicable national safety regulations!
Personnel qualification
Only authorized and qualified specialist personnel may be tasked with the work
on the dryer described in these operating instructions. The electropneumatic
switch cabinet in particular must be opened and serviced by an instructed trained
electrician only.
Conversions and modifications
Without prior approval by the manufacturer, no conversions and modifications
must be made to the dryer! Any non-approved modifications may restrict the
WVM_BASIS_EN_03—07/2016 13
operational safety of the dryer and cause damage to property or personal injury.
Page 14
Notes on desiccant handling
The used desiccant is perfectly safe when new. Increased dust formation can
nevertheless occur when desiccant is filled into or removed from a vessel .
Therefore, heed the following hints:
Wear a dust mask and eye protection when filling desiccant into the vessels!
Collect spilt desiccant immediately! There is a risk of injury from slipping on
spilt desiccant!
Note:
For information on how to dispose of used desiccant refer to page 16.
Safety notes on specific operating phases
Transportation and siting
Only use suitable and technically perfect lifting gear with a sufficient carrying
capacity.
Carefully secure the dryer during transportation.
Commissioning of the dryer
Risk of injury from suddenly escaping gas!
While the unit is under pressure, never remove any components or
otherwise interfere with the dryer! Suddenly escaping gases can lead to
serious injury!
Prior to any work, release all pressure from the unit.
Execute the stipulated tests and checks.
On no account should the factory settings of the control programme be
altered without consulting the manufacturer.
Prior to commissioning make sure there are no tools or foreign objects in, on
or near the dryer that could turn into a hazard for commissioning the dryer.
Emergency shutdown
In any emergency, proceed as described in the section on page 42.
Monitoring of the operation
Warning against sudden air ejection!
During expansion the pressure is released suddenly through the muffler:
A loud cracking noise occurs which can injure your hearing.
Particles carried in the air can injure your eyes or skin.
Always wear eye and ear protection, therefore, when you are in the
vicinity of the dryer!
14 WVM_BASIS_EN_03—07/2016
Page 15
Operate the dryer only within the permitted limits (see type plate). If the unit is
operated under conditions where the defined limit values are exceeded, it is
exposed to stresses for which it is not designed. This can result in
malfunction or failure of the dryer.
The higher the capacity of the dryer, the more noise it produces during
operation. The operator must therefore provide suitable protective equipment
(earmuffs).
The dryer must be regularly inspected for visible damage. Any observed
changes, including changes in the operation behaviour, must be immediately
reported to the responsible person.
In the event of an emergency and if safety-relevant malfunctions are
observed (e.g. escaping compressed air, higher noise level, defective
components), the dryer must be immediately switched off (see page 42). The
unit may only be restarted after all defects have been eliminated.
Servicing and troubleshooting the dryer
Risk of injury from escaping compressed air!
Never remove any parts of the dryer, or manipulate the same in any way,
as long as the unit is pressurised! Suddenly escaping compressed air
might cause serious injuries.
Prior to any work, release all pressure from the unit.
Carry out all maintenance work only when the plant has been shut down and
depressurised!
Do not modify the factory settings of the control system in any way without
prior consultation with the manufacturer.
Bolt connections must be undone with care! Note ram pressure values!
Otherwise emerging media may cause personal injury.
Never carry out welding work on a vessel or modify the same in any way!
Never use pipes and fittings as steps or holding points! The components
might fracture, or the distortions which occur may cause internal damage on
the dryer. There is a risk of injury by slipping off the components, components
breaking off, and expanding compressed air!
Never leave tools, loose parts or cloths in, at or on the dryer.
Following maintenance work, always check all flange and bolt connections for
leakage and secure seating.
Only use replacement parts that are suitable for the relevant function and
meet the technical requirements stipulated by the manufacturer. This is
always the case, if you use original replacement parts only.
WVM_BASIS_EN_03—07/2016 15
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Removal and disposal
Hazard due to a sudden release of pressure!
Never remove any parts of the dryer, or manipulate the same in any way,
for as long as the dryer is still pressurised! A sudden escape of pressure
may cause serious injuries.
Depressurise the plant before carrying out any work on the dryer.
Notes on the disposal of used desiccant
As the used desiccant is contaminated with various substances, its properties
differ from those of new desiccant. For this reason, the manufacturer or supplier
of desiccant cannot give any information on the used product.
Deliver used desiccant to a controlled dumping while heeding local official
regulations.
Waste codes
New product: 060899 (European waste code).
Used product: These codes are governed by the industrial use and must
therefore be determined by the waste originator.
16 WVM_BASIS_EN_03—07/2016
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Technical product description
Summary drawing
Front view
1
Main outlet valve l
2
Control air filter and pressure reducer
3
Filler sleeve for desiccant
4
Switch cabinet with operating panel
5
Vessel pressure gauge
6
Stop valve for vessel pressure gauge
7
Pressure transducer
8
Vessel
9
Dew point measuring chamber
10
Pressure build-up valve
11
Discharge sleeve for desiccant
12
Main inlet valve
WVM_BASIS_EN_03—07/2016 17
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Connector box of the heater with release
Rear view
Lifting eye
0
Resistance thermometer for regeneration gas
1
final temperature
Vacuum pump
2
Lashing eye
3
Regeneration gas outlet of the vacuum pump
4
18 WVM_BASIS_EN_03—07/2016
5
button for the safety thermostat
Suction opening for regeneration gas
6
Heater
7
Expansion valve with silencer
8
Resistance thermometer for the control
9
temperature of the regeneration gas
Page 19
Adsorption (here: absorption in left
Function
The dryer dries the compressed air provided by the compressor and makes it
available for industrial use.
Upstream filters clean the compressed air and remove dust, dirt, oil, and water
droplets, before the compressed air reaches the dryer. Thus, an upstream filter is
also used for extending the service life of the drying agent.
Downstream filters clean the compressed air from drying agent abrasions, before
it is fed into the compressed air system.
The two vessels contain an extremely porous drying agent by means of which
humidity is removed from the compressed air and stored just as in a sponge. The
stored humidity is then removed again from the drying agent and re-introduced
into the ambient environment.
To this end, the two vessels alternate between different operating modes. Whilst
in one vessel, compressed air is de-humidified (adsorption), in the other vessel
the humid drying agent is prepared for another charge (regeneration).
These two states, which run in parallel during compressed air preparation, are
described below.
Adsorption
The humid air is supplied through a compressor
and the inlet valve of the dryer. The compressed
air is then transferred upwards through the
pressurised vessel, where the water contained in
the air is absorbed by the desiccant. The dried
compressed air is subsequently fed into the pipe
system at the top of the dryer.
Regeneration (completed in parallel with adsorption)
The regeneration is subdivided into four phases:
expansion, heating, cooling and pressure buildup.
With the dewpoint-sensing control option, the
regeneration phase is followed by a standby
phase.
vessel)
The following figures show the
regeneration phases (here:
regeneration in right vessel)
WVM_BASIS_EN_03—07/2016 19
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Cooling phase
Expansion phase (duration: some minutes)
The pressure in the right vessel is released
through the expansion valve until the ambient
pressure is reached.
The escaping of the
compressed air is thereby audible at the silencer
as a low hum.
Expansion phase
Heating phase (duration: several hours)
A vacuum pump sucks ambient air through the
heater* to the vessel to be regenerated. The air
is thereby heated by the heater. The warm air
subsequently flows through the humid desiccant,
removing the water contained in the agent, which
is fed out in the form of steam together with the
air through the piping.
* This can be either a steam or an electrical heater, but also a
combination of both heater types
Heating phase
(duration: approx. one hour)
The hot, dried desiccant must now be cooled and
is then ready for absorption. The heater is
switched off so that the vacuum pump feeds cold
ambient air through the vessel.
If the “loop regeneration” option has been
installed, the regeneration air flows in a closed
circuit. Heat dissipation occurs via a water cooled
heat exchanger.
Advantage: No desiccant preloading with
ambient moisture.
Cooling phase
20 WVM_BASIS_EN_03—07/2016
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Pressure build-up phase (duration: several
minutes)
After completion of the cooling phase, the
pressure in the vessel is raised to operating
pressure via the pressure build-up line.The
vessel can now be switched from regeneration to
absorption operation.
Stand-by-phase
The regenerated vessel remains in the stand-by
phase as long as the pressure dewpoint is better
than the set switch over value. Switch over only
occurs when the switch over value is reached or
after a maximum cycle duration of 48 hours.
Switching over
In the fixed cycle
A switch-over between the vessels occurs after 6 hours. After switching over, the
process described above is repeated whereby adsorption and regeneration is
performed in the other vessel respectively.
In the variable cycle
The pressure dewpoint-dependent controller lets you operate the dryer in the
fixed or variable cycle.
In the variable cycle, switchover occurs in dependence of the measured pressure
dewpoint.
(for dewpoint measurement option)
Pressure build-up
WVM_BASIS_EN_03—07/2016 21
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Options
The following options are available:
Pressure dewpoint control
Insulation and protection against contact
Adaptation for outdoor installation
Auxiliary heating system, anti-freeze protection
Intake socket for regeneration air
Intake filter for regeneration air
Loop regeneration (loop cooler)
Steam heat exchanger instead of electric heater
Steam/electric heater combination
Paint compatible variant
Pressure Dewpoint control
A pressure dewpoint control lets you also operate the dryer in a variable cycle. In
the fixed cycle, switchover is effected after a fixed time period (usually after 6
hours). In the variable cycle, the switchover is effected in relation to the dew
point reached and the charging of the drying agent . The adsorption time in the
variable cycle amounts to 24 hours maximum.
Insulation and protection against contact
By insulating the dryer, its energy consumption during the heating phase of the
regeneration can be considerably reduced. Insulation is mandatory in order to
reach deep pressure dewpoints and if the dryer is subject to frequent change of
air (wind, draught, etc.) at the installation site.
The following components should be insulated:
The vessels of the dryer
The heater
Adaptation for outdoor installation
The standard dryer is designed for installation in confined places and not for
outdoor operation because the following factors affect its function and service life:
Humidity from rain (or other precipitation)
Corrosion due to high humidity or salt content in the ambient air
Freezing of valves, taps, flaps and other components at low temperatures.
If you intend to install the dryer outside your premises, always consult the
manufacturer prior to installation in order to agree on special design measures as
regards the equipment and the site where you wish to install the dyer.
Auxiliary heating system / anti-freeze protection
For installation at locations where temperatures below +1 ºC are to be expected,
the air inlet piping of the dryer (or the inlet piping to the preliminary filter system, if
any) must be equipped with an auxiliary heating system in order to prevent the
freezing of valves, taps, flaps and other components.
A planned frost-proof variant must therefore be always discussed with the
manufacturer in order to be able to implement specific design features.
22 WVM_BASIS_EN_03—07/2016
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Intake socket for regeneration air
A supply air duct or a supplying pipe can be flanged to the dryer by way of the
intake socket to guide regeneration air to the dryer (see page 26).
Intake filter for regeneration air
The intake filter removes solid impurities (e.g. dust) from the regeneration air
before it reaches the dryer.
The intake filter is flange mounted and can therefore only be installed in
conjunction with a intake socket (see before).
Loop regeneration (loop cooler)
The desiccant absorbs the moisture in the ambient air during the cooling phase.
The amount of moisture taken in can be accordingly high at very high ambient
temperatures and relative humidity (e.g. in tropical operating environments).
A loop cooler can be implemented in order to prevent this situation and to ensure
a stable pressure dewpoint under above mentioned adverse circumstances. This
principle implies taking in the regeneration air only once and then circulating it.
The heat dissipates via a water cooled heat exchanger.
The operator must provide a cooling water connection and appropriate cooling
water valves.
Note:
The heat exchanger choice depends on the quality of the cooling
water. For this purpose, you should contact the dryer manufacturer
beforehand.
Steam heat exchanger
To heat the regeneration air, a steam heat exchanger can also be used as an
alternative to the standard electric heater. The steam heat exchanger comes with
an appropriate steam shut-off valve.
In this case, the scope of delivery can also comprise supplementary documents
such as data sheets or supplementary operating manuals.
Steam/electric heater combination
In this option, the existing electric heater is supplemented by an additional steam
heat exchanger. This allows for three operating modes:
Pure steam operation
Sufficient hot steam is available for regeneration. The electric heater is not
needed.
Pure electric operation
Hot steam is not available, the electric heater performs all the heating.
Combination operation
The heating capacity of the steam heat exchanger is not sufficient to reach the
required regeneration temperature. As a consequence, the electric heater is
turned on to compensate for the temperature deficit.
WVM_BASIS_EN_03—07/2016 23
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Paint compatible variant
Paint finishing systems make great demands on the compressed air purity
because even the tiniest impurity can degrade the paint quality. Diminutive
amounts of foreign particles containing oil and grease or solvents — in particular
silicones — can result in craters, discolourations, swells or other paint impurities.
Paint compatible dryers are equipped with seals and filters that are absolutely
free of grease and silicone and thus ensure a high compressed air quality for
painting.
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Always use the lifting eyes at the vessel top to lift the dryer.
Warning!
Transportation, installation and storage
Danger due to incorrect transportation!
The dryer must be transported by authorized and qualified specialist
personnel only. During transportation all applicable national regulations
for accident prevention must be complied with. Otherwise there is a risk
of personal injury.
Warning!
Risk of damaging the dryer when lifting it at the lashing eyes. The lashing
eyes laterally fastened to the vessels are not intended to safely bear the
dryer's weight.
The dryer and in particular the vessels could be damaged.
Note:
The dryer is equipped with lashing eyes fastened to the vessel sides.
Use these eyes to secure the unit during transport.
Only use suitable and technically perfect lifting gear with a sufficient carrying
capacity.
During transportation the dryer must be carefully secured against falling over.
Remove the transport packaging at the installation site only and dispose of it
in a proper manner.
The manufacturer will not be liable for any damage caused by incorrect storage
or incorrect transportation. Please note therefore the following instructions as well
as the storage instructions on page 29.
What to do in the case of transport damage occurring?
► Check whether only the packaging or the dryer itself were damaged.
► Inform the haulier immediately in writing of any damages.
► Contact the manufacturer urgently in order to report the damage. You will find
the telephone number on page 8.
A damaged dryer must not be taken into operation! Damaged components
may lead to functional faults and possibly cause further damage.
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Transporting dryer to its location of installation
Requirements regarding the location of installation
The general conditions at the site of installation greatly affect the operation of the
dryer and the service life of the desiccant. In order to ensure long-lasting
operation with minimum maintenance, the location of installation must meet the
following requirements:
Weather protection
The location for installation must be weatherproof and inside a building.
Protect the dryer against moisture. Read the notes on page 22 when the
dryer is to be installed outside (option). When installed outside, the dryer
must be insulated.
Ambient air
The ambient air must be as free from dust as possible since heavily dust-
laden installation locations reduce the drying agent’s service life. In case of
doubt we recommend to supply the dryer with regeneration gas by way of
supply ducts or pipes. For this purpose, a special heating pipe or a heating
pipe adapter can be used for retrofitting.
Ambient temperature
The ambient temperature must not be below +1° C. Implement an additional
heating if necessary (see page 22). In this context please also heed the
information regarding insulation on the following page.
If possible, the ambient temperature should not exceed 30° C and the relative
humidity not exceed 60% in order to ensure sufficiently effective regeneration
and a suitable pressure dew point. A higher ambient temperature or relative
humidity must be specially considered when designing the dryer and
recorded in the offer document if this proves to be unfeasible. If the required
cooling water is available, you should implement the optional loop cooler.
Please also heed the appropriate notes in section Technical data!
Ventilation
Provide sufficient ventilation as moisture is released to the ambient air during
regeneration.
Note:
Guide the regeneration gas from the vacuum pump out of the
installation room using exhaust ducts or pipes. Please follow the
notes on page 31 regarding the installation of the supply line.
Criteria for insulation
The dryer must be insulated if one or all of the following criteria are met:
When the room temperature at the installation location drops below 10° C for
more than 1 hour per day.
When the room temperature at the installation location drops below 15° C for
more than 3 hours per day.
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In case of draught at the installation location as can be expected with
ventilation systems, passages or similar. This applies regardless of the room
temperature. Measure the draught flow rate in the vicinity of the dryer when
you are in doubt. Insulate the dryer if the flow rate exceeds 0.3 m/s in the
immediate vicinity of the dryer.
When a pressure dew point exceeding –40° C is to be supplied.
The dryer can first be delivered without insulation. Retrofit an insulation if the
desired pressure dew point cannot be attained due to the above criteria.
Noise emission
Heed the dryer’s noise emission when selecting the installation location (see
also page 15).
Stellfläche
The installation area must be level, solid and free from vibration. It must be
capable of bearing the dryer’s weight. You will find the dryer’s weight in the
technical data in the appendix. Please add another 10% to the dryer's weight
in your calculations. This will ensure the moisture trapped by the desiccant
later is accounted for.
Lateral clearances
The dryer should be erected with
sufficient clearance above, to the
sides and behind so that
maintenance work can be carried
out and the drying agent can be
changed without hindrance (see
illustration).
Lifting devices
You should have lifting devices with
an adequate load capacity available
for assembling and maintaining
individual parts such as the vacuum
pump.
If in doubt, contact a specialised technician to carry out a site inspection. If you
have any queries in relation to the location of installation, please contact our
customer service department or our sales team.
Required clearances at the top
and the sides of the unit = minimum 1 m
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Always use the lifting eyes at the vessel top to lift the dryer.
Transporting of dryer
Risk of serious injury due to improper transport!
The dryer may only be transported by authorised and suitably qualified
technical personnel. During transport, always comply with the applicable
statutory safety regulations . Otherwise, there is a risk of serious injury.
Warning!
Risk of damaging the dryer when lifting it at the lashing eyes. The lashing
eyes laterally fastened to the vessels are not intended to safely bear the
dryer's weight.
The dryer and in particular the vessels could be damaged.
► Remove packaging.
► Attach suitable lifting gear to the
lifting eyes on the vessels (see Item
1 on the adjacent illustration).
► The lashing eyes (Item 2) are
intended to secure the unit during
transport and are not suited to lift
the dryer.
Lifting and lashing eyes at vessel
Note:
The vessels are filled with layers of various desiccants. They should
therefore be transported in an upright position in order to prevent the
mixing of these desiccants, as this could impair the operation of the
dryer.
Risk of tilting!
The dryer should only be transported in an upright position. However, this
means that the centre of gravity of the unit is located in the upper half of
the dryer, so that there is a serious risk that the unit might tilt over.
Therefore, adhere to the transport instructions outlined below.
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► When using a forklift, ensure that the dryer is always in an upright position.
Transport by crane
► Transport the adsorption dryer in an
upright position to its location of
installation.
Transport by crane
Transport by forklift
► Secure the dryer with screws to a pallet to ensure that it cannot tilt or fall
from the forklift.
Installation and anchoring of the dryer
► Secure dryer by means of suitable securing devices to the floor
► On oscillating floors: The dryer must be positioned on suitable oscillation
absorbers.
Storage
If the dryer is not to be installed immediately after delivery, it must be stored at a
suitable location that fulfils the following requirements:
The dryer must not be stored outdoors.
The storage room has to be dry.
The storage room must be free of dust; otherwise, cover dryer with a
tarpaulin.
The ambient temperature in the storage room may not be below +1 ºC.
To storage the dryer, proceed as follows:
► Decommission dryer as described on page 42.
► Ensure that the inlet valve and the outlet valve installed on the site are closed
and release all pressure from the dryer.
► Make sure that existing steam valves (with optional steam heat exchanger) or
cooling water valves (with optional loop regeneration) are closed.
► Disconnect dryer from compressed air system.
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► Disconnect the plant from the electric mains supply and any external and
supply lines.
► Cover the following inlet and outlet openings with film or similar material to
protect them against contamination by dust and dirt:
— inlet and outlet openings for compressed air
— inlet for the regeneration gas at the heater
— regeneration gas outlet at the vacuum pump
— cooling water intake and exit (with optional loop regeneration)
— hot steam intake (with optional steam heat exchanger)
► Cover the dryer with a tarpaulin, if possible.
The dryer is not suitably prepared for prolonged storage.
Note:
To recommission the dryer after prolonged storage, please proceed as
described for initial commissioning (see page 37).
Store drying agents
► Do not store drying agents in the open air.
► Protect drying agents against humidity.
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Warning!
Installation
Only authorized and qualified specialist personnel may carry out work on
pipes and electrical systems.
The electropneumatic switch cabinet in particular must be opened and
serviced by an instructed trained electrician only.
As soon as the dryer has been set up at its installation location, you can install
Requirements for installation
the compressed air infeed and outlet lines and make the electrical connections.
Risk of damage resulting from exceeding the limit values!
A safety device protecting against exceedance of the maximum
permissible operating gauge pressure must be present.
The safety device must be installed so that the dryer is reliably protected
from exceeding the maximum permitted operating pressure even when
the temperature of the compressed gas increases.
Safe dryer operation cannot be ensured if the requirements described
here are not met. This can also degrade the dryer’s function.
For proper installation, the operator must provide the following:
Connections and lines must be provided for compressed air intake and exit.
The operator must install shut-off valves for compressed air and supply media
at the intakes and exits.
All pipelines, couplings and connections must have the correct diameter and
be matched to the operating pressure.
If the regenerated gas is supplied to and led away from the dryer by ducts or
pipelines installed by the operator, the following instructions must be adhered to:
Avoid any loss of pressure!
A pressure loss in the air inlet and outlet pipelines >20 mbar may
significantly affect the dryer’s functionality. The consequences may
include the following:
Failure to reach the pressure dewpoint
The dessicant will become unusable well before expiry of its normal
useful life
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The exit point of lines must be
It is therefore vital to observe the following points:
Do not allow the maximum pressure loss in the air inlet and outlet
pipelines to exceed 20 mbar (e.g. maximum 10 m pipline with three
bends)!
The selected diameter of the air inlet and outlet pipelines must be at least two
nominal widths greater than that specified by the connection flange on the
vacuum pump!
— In order to prevent corrosion in the pipes, we recommend the use of
galvanised or stainless steel piping.
— Provide a supporting fan in case of longer or widely branched pipelines
and high differential pressures. Please contact the manufacturer for more
information.
—
protected with a rainguard to
prevent water from reaching the
dryer inside (see figure).
— If necessary, the exit point of
lines should be barred with grilles
in order to prevent foreign objects
or animals from entering the
dryer.
— The outlet line must be installed
Rainguard when lines point upwards
in such a way that there is no risk
of injury from hot regeneration
gas.
Rainguard when line exits to the side
— If both an inlet and an outlet line are installed, ensure that the escaping
hot regeneration gas is not again drawn into the inlet line. The outlet
opening of the outlet line should thus be positioned higher than the inlet
opening.
— If both an inlet and an outlet line are installed, ensure that condensation
water cannot drop from the outgoing line onto the supply air intake when
installing supply as well as outgoing lines. For this purpose, the outlet line
should be routed farther to the outside than the inlet line.
— Route the supply line at sufficient height to prevent taking in coarse dirt
or other detrimental foreign objects.
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2
Humid air inlet
4
Preliminary filter
5
Bypass line
7
Bypass filter
10
Compressed air outlet valve
Installation of pipelines
To ensure proper operation of the dryer, its connection to the compressed air
system must be free from stress.
► Prior to installation, check all incoming and outgoing compressed air lines
and valves for damage or contamination.
► Inspect screw connections and retighten, if necessary (screw connections
might become loose during transport).
Ensure that the pipelines are not under any stress when installed!
Stress on pipes might result in the rupturing of the lines during operation,
resulting in damage to persons and property.
► Connect the dryer to the compressed air system, while heeding rated
diameter and pressure.
The figure below shows a proper installation.
Compressed air system Item Component
1 Dryer
3 Compressed air inlet valve
6 Valve in bypass line
8 Valve at outlet of bypass filter
9 Afterfilter
11 Dry air outlet
Example of a proper installation with bypass line
► The connecting lines of the preliminary filter (4) should be at a slight slope
towards the filter.
► A shut-off valve (3, 10) at both the inlet and outlet for the compressed air
must be installed.
► In units with bypass line (5) and additional shut-off valve:
Ensure that the line is installed in such a way that the compressed air flow
must not be interrupted during maintenance of the dryer.
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► Make sure the cross section of the electric cable matches the dryer's power
► Insert power cable through the left
► Connect wires according to the circuit
Connection of electrical components
Beware of electrical voltage!
Work on the electrical system must be entrusted to instructed, authorised
electricians only. The electropneumatic switch cabinet in particular must
be opened and serviced by an instructed trained electrician only.
Connection to power supply
The dryer components have been connected in the switch cabinet at the factory.
You only need connect it to the electric supply.
consumption and the voltage available at the customer's.
recess at the base of the switch
cabinet (see figure).
diagram to terminals L1–L3 at the
terminal strip (the circuit diagram is
attached inside the switch cabinet).
► Connect the dryer's earth cable to the
PE terminal.
► Protect the dryer against short circuits
by installing fuses to all phases.
Connection of dryer to the fault signalling system
There is an ex-works option to connect the dryer to a fault signalling system. With
such a system, faults occurring anywhere in the dryer unit can be displayed at
one location, e.g. at a control station.
► Connect the cables of the fault signalling system to the terminal strip as
show in the circuit diagram .
External interfaces
The dryer controller features interfaces for data transmission.
Please heed the controller manual for more information on these interfaces.
Check bolt connections
Before the initial start-up:
Check all unions and bolt connections as well as the terminals in the control
cabinet for secure seating; re-tighten if necessary.
Cable recess in switch cabinet base and
terminal connections for power supply
34 WVM_BASIS_EN_03—07/2016
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Warning!
Start-up
The dryer must be taken into operation by trained personnel only!
Untrained personnel does not have the required knowledge. Such
personnel might cause serious faults.
Note:
You can order the initial commissioning and start-up from the
manufacturer and have your personnel trained by the manufacturer.
For telephone number, see page 8.
Carry out all prescribed tests and checks.
Before start-up, ensure that no tools or other foreign parts have been left
lying in a part of the dryer where they might pose a hazard to the dryer being
started up.
Requirements for initial commissioning
The following conditions must be met for initial commissioning:
All pipelines are free of contamination.
All shut-off valves are closed.
The dryer has been properly set up, wired and connected.
The compressors are ready for operation.
At the outlet side, a compressed air consumer is present, i.e. compressed air
can flow through the dryer.
Operators for the components are available.
Inspection to be carried out prior to commissioning
Ensure that
all pipe, cable and screw connections have been retightened,
none of the lines are worn at edge of the dryer body,
all connections are properly secured,
the electric connections are properly secured and in good condition,
the operator-supplied components such as safety valves and other equipment
holding pressure are not blocked by dirt or paint,
all components of the compressed air system that are under pressure
(valves, hoses, etc.) are free of wear or other defects,
sufficient amounts of required supply media such as steam or cooling water
are available at suitable quality and the respective shut-off valves are open.
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Overview of the operating and display elements
The operating panel at the switch cabinet door allows for the monitoring of the
operating statuses and for the modification of settings. The display is a Touch
Screen Panel. To operate, touch the elements on the screen.
For further information on the operating panel and the controller's functions,
please refer to the enclosed controller manual.
Vessel pressure gauge
On both vessels, pressure gauges are fitted which show the operating
overpressure. The operating overpressure indicates the operating phase of the
relevant vessel:
During adsorption the pressure gauge should indicate the nominal operating
overpressure.
During regeneration the indication of the pressure gauge on the regenerating
vessel
— must drop from the operating gauge pressure to < 0.5 bar gauge
pressure during the expansion phase,
— must indicate a vacuum of 50 – 100 mbar during the drying phase.
During the pressure build-up phase the indication on the pressure gauge
should again rise to operating overpressure level (both vessel gauges
indicate the same operating pressure).
Commissioning of the dryer
Risk of injury from escaping hot regeneration gas!
Hot humid air might escape from the the regeneration gas outlet at the
vacuum pump. Therefore, keep clear of the blow-off outlet during
operation of the unit.
Risk of injury from crushing!
During the switching from adsorption to regeneration, there is a risk of
injury from crushing at the universal shaft and the drives. During
switching, stay clear of these components!
Risk of injury from hot surfaces!
During operation, certain surfaces of the dryer are heated to temperatures
of over 120 °C. At insulated dryers, screw connections might protrude
from the insulation. Do not touch hot surfaces. Allow surfaces to cool
before you carry out any work at the dryer.
Risk of injury from suddenly escaping gas!
While the unit is under pressure, never remove any components or
otherwise interfere with the dryer! Suddenly escaping gases can lead to
serious injury!
Prior to any work, release all pressure from the unit.
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► Check the stop valves at the vessel pressure gauges to ensure that they
► Check the valves at the inlet and outlet for the compressed air (provided by
Slowly open compressed air inlet valve!
Operate the dryer only within the permitted limits. Operation of the dryer
under conditions for which it is not designed may lead to malfunctions.
On no account should the factory settings of the control programme and the
frequency converter be altered without consulting the manufacturer.
The higher the capacity of the dryer, the more noise it produces during
operation. The operator must therefore provide suitable protective equipment
(e.g. earmuffs).
Depending on the size of the dryer, the compressed air network and the
respective legal requirements in your country, it may be necessary to perform
initialisation according to the directive for pressure equipment.
Check the dryer for visible damage and faults at regular intervals.
Immediately report changes, also those regarding operational behaviour, to
the institution or person in charge.
In the event of an emergency or if safety-relevant malfunctions are observed,
immediately switch off the dryer. The dryer may only be restarted after the
malfunction has been eliminated.
Preparation for commissioning
For the commissioning of the dryer, follow the instructions as set out below.
Pressurisation of unit
are opened (see page 17).
operator) and ensure that they are closed (see also example of installation
on page 33).
► Ensure that the compressed air system in front of the dryer is pressurised.
Adjust pressure, if necessary. Switch on compressor.
Avoid abrupt pressure increase! Rapid pressurisation may lead to serious
damage to the dryer! Therefore, open compressed air inlet valve slowly
and with caution!
► Slowly open compressed air inlet
valve leading to the dryer.
► Monitor the pressure increase at the
vessel pressure gauge (see page 17):
In one of the vessels, the pressure
must be increased until it reaches the
operating pressure.
WVM_BASIS_EN_03—07/2016 37
Compressed air inlet to the dryer
Page 38
Too fast a pressure drop or too
to open the pressure outlet valve only slowly or implement a start device in
► Slowly open compressed air outlet valve. Monitor the pressure in the
► Ensure that the main switch is in position "0"
Caution!
► The assistant must position himself in a location from where can look on the
► Wait until the vacuum pump is fully started. Then stop the dryer. The fan
► During this time, the assistant must check, whether the wheel rotates in the
Avoid abrupt pressure drop!
Avoid abrupt pressure drops by all means!
high flow rates can cause damage to the dryer. For this reason, make sure
the compressed air network immediately downstream of the dryer!
pressurised vessel at the vessel pressure gauge (see page 17). The vessel
pressure should not drop by more than 25 % and must never drop below
the minimum pressure of the installed valves (approx. 5 bar).
Note:
You may only switch on the dryer when the pressure gauge at the
pressurised vessel indicates the required minimum pressure for the
installed valves (see above).
The unit is now fully pressurised. Proceed by checking the direction of rotation of
the vacuum pump.
Inspecting direction of rotation of the vacuum pump
Note:
For the next steps, you will need an assistant.
► Open switch cabinet door.
► Remove fuses of the heater (for location of the fuses see electrical
diagram). This is necessary to ensure that the heater is not inadvertently
switched on and thereby damaged.
► Set main switch to position "I".
► Start the dryer (see the operating manual for the controller).
► After the expansion time has expired, the regeneration valve opens and the
vacuum pump starts running.
If an error is shown, first eliminate the cause of the error, and only then
continue with the commissioning.
fan wheel of the vacuum pump motor.
The correct direction of rotation of the vacuum pump is indicated by an arrow on
the pump housing. The arrow is painted in the colour of the housing and
extends over several cooling fins.
wheel continues rotating for a short period of time.
correct direction.
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► Set main switch to position "0".
► Disconnect dryer from power supply.
Checking can be facilitated for vacuum pumps starting up immediately
The vacuum pump direction is correct, if the fan wheel rotates in the direction of
the arrow.
Procedure if direction of rotation of the vacuum pump is correct
► Set main switch to position "0".
► Insert heater fuses.
Procedure if direction of rotation of the vacuum pump is not correct
Even short-term operation of the dryer with incorrect direction of rotation of the
vacuum pump might lead to damage to the heater. Therefore, always correct
pump direction, if necessary.
Caution! Risk of electrocution!
Prior to adjusting direction of rotation, disconnect the unit from the power
supply. Otherwise, there is a risk of serious injury from live cables and
components!
► Exchange cables L1 and L2 at the terminals.
► Check direction of rotation of the vacuum pump as described on page 38.
► Insert heater fuses.
Proceed with starting the dryer.
Note:
(i.e. without star-delta circuit, see circuit diagram in the Appendix):
► Remove fuses of the heater.
► Turn on main switch..
► Briefly actuate the contactor for the pump (see circuit diagram), e.g.
with a screwdriver.
► Check and if necessary correct the direction of rotation (see above).
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► Set main switch to position "I"
► Start dryer (see the operating manual for the controller).
Commissioning of dryer
The unit is now fully switched on, provided that no error message is displayed.
How to proceed if an error message is displayed
Warning!
In an emergency and in the event of safety related faults (e. g. a sudden
escape of compressed air, defective components) take the plant out of
operation immediately as described on page 42.
► Stop the dryer.
► Set main switch to position "0".
► Eliminate the error. (heed the malfunction table in the controller manual).
► Repeat commissioning.
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Monitoring dryer operation
Notes on specific operating situations
Parallel operation of several plants
The standard configuration comprises one compressor and one dryer. Please
contact the manufacturer if you plan a plant differing from this configuration.
Part-load dryer operation
The dryer provides optimum performance at high loads. This is the case if the
operating parameters match or slightly fall below the specified values.
Dryer performance can degrade if the dryer often operates at part-load. Dryer
performance increases as soon as the load is raised.
Part-load operation can occur
due to too low flow rates (< 30 % of rated value),
by operating the plant with predried air (i.e. the relative humidity of supply
compressed air is below 30% RH),
due to an operating pressure that is higher than the rated pressure,
due to a compressed air temperature that is much lower than the rated
temperature,
if several of the above conditions apply.
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Shutdown and restart dryer
In the following cases, the dryer must be fully shut down and depressurised:
In the event of an emergency or malfunction
For maintenance work
For dismantling
Risk of injury from escaping compressed air!
Never remove any parts of the dryer, or manipulate the same in any way,
as long as the unit is pressurised! Suddenly escaping compressed air
might cause serious injuries.
Prior to any work, release all pressure from the unit.
Emergency shutdown
The master switch of the dryer also serves as an emergency stop switch.
Proceed as follows to stop the dryer in an emergency:
► Set main switch to position "0".
► Close compressed air outlet valve.
The dryer is now shut down. Restart the dryer only after having eliminated all
errors!
Stopping the dryer
Please proceed as follows if no compressed air is needed at night or at
weekends:
When the compressor remains on
► Close compressed air outlet valve.
► Leave the customer's intake valve for compressed air open (see installation
example on page 33).
► Stop the dryer (see the operating manual for the controller).
The dryer is halted. The current programme is interrupted at a point from where it
can be restarted without difficulty at any time.
When the compressor is switched off
► Close compressed air outlet valve.
► Close compressed air inlet valve.
► Stop the dryer (see the operating manual for the controller).
The dryer is halted. The current programme is interrupted at a point from where it
can be restarted without difficulty at any time.
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remains on.
Note:
It is not necessary to set the main switch to position "0". The display
Depressurising and shutting down the dryer
You must depressurise the dryer and shut it down for:
maintenance
disassembly
► Stop dryer (see the operating manual for the controller).
Depending on the installed controller, the following stop situations can occur:
The dryer completes the current regeneration cycle and pressure build-up
before the programme stops.
The dryer stops immediately (or after one minute during the heating phase).
► Close the pressure inlet valve and the pressure outlet value (both provided
by customer).
► Close any existing inlet and outlet valves for supply media (e.g. cooling water
and steam).
The dryer is separated from the compressed air network and can be shut off
now.
► Set the master switch to “0”.
Note:
Do not let any compressed air flow through the dryer after it has been
shut down! The desiccant in one of the vessels will otherwise
continue to be loaded with moisture without the other vessel being
regenerated at the same time.
► Depressurise the adsorbing vessel (e.g. by opening the manual drain valve
on the downstream filter).
► Wait until the pressure on the vessel pressure gauge of the adsorbing
vessel has dropped to 0 bar.
► Using the vessel pressure gauge, check whether both vessels have been
depressurised.
► For maintenance work: wait until the dryer has cooled down.
Risk of injury from hot surfaces!
Certain surfaces at the dryer remain hot even after the unit has been shut
down. Do not touch hot surfaces! Allow surfaces to cool before you carry
out any work at the dryer.
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► If necessary, slowly open the compressed air inlet and outlet valves
If work is to be carried out on the electrical system
► Depressurise and shut down the dryer, following the instructions in the above
chapter.
Risk of injury due to voltage-carrying parts!
The electrical supply cable and external power lines are live even after the
dryer is switched off and, in the event of body contact, may cause serious
injury! Before carrying out any work on the electrical system, the
electrical supply cable and all external power lines must be made voltagefree!
► Make the electrical supply cable to the dryer voltage-free.
► Secure the electrical supply cable to the dryer against switch-on.
Restart
Restarting dryer: compressed air system and dryer under operating pressure
► If the dryer was shut off: switch on the dryer by setting the main switch to I.
Otherwise:
► Start the dryer (see the operating manual for the controller).
installed by the operator.
The dryer is now ready for operation and continuous automatic cycle.
If compressed air system and dryer have not remained at operating pressure
► If disconnected, reconnect the voltage supply of the dryer.
► Pressurise and switch on the dryer as described in the section on page 37.
The dryer is now in operation again and operates fully automatically.
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Maintenance and repair of the dryer
In order to allow maintenance work on the dryer to be carried out efficiently and
without danger for maintenance personnel, you should comply with the following
Notes on maintenance
instructions.
Warning!
Maintenance tasks may be carried out only by authorized and qualified
specialist personnel, and only with the plant in a switched off and
depressurised condition.
Note:
In order to ensure perfect maintenance and reliable operation we
recommend that you conclude a maintenance contract (For telephone
number, see page 8).
When exchange or replacement parts are ordered, always state the
dryer type and the build no. of the dryer. These data are found on the
type plate attached to the control cabinet door.
Carry out all maintenance work only when the plant has been shut down and
depressurised!
Bolt connections must be undone with care! Note ram pressure values!
Otherwise emerging media may cause personal injury.
Do not modify the factory settings of the control system in any way without
prior consultation with the manufacturer.
Never carry out welding work on a vessel or modify the same in any way!
Following maintenance work, always check all flange and bolt connections for
leakage and secure seating.
Never use pipes and fittings as steps or holding points! The components
might fracture, or the distortions which occur may cause internal damage on
the dryer. There is a risk of injury by slipping off the components, components
breaking off, and expanding compressed air!
Never leave tools, loose parts or cloths in, at or on the dryer.
Only use replacement parts that are suitable for the relevant function and
meet the technical requirements stipulated by the manufacturer. This is
always the case, if you use original replacement parts only.
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Maintenance interval
daily monthly
annually every 2
every 4
see page
Regular maintenance tasks
The table below shows an overview of the regular maintenance tasks. The
individual tasks are described in detail on the following pages.
Component Maintenance task
Entire dryer Complete visual inspection and function test. 47
Heater Inspect intake opening for regeneration gas.
Switch cabinet Check that the screw connections and clamps
are secured; tighten if necessary.
(Reduce maintenance intervals in the event of
heavy vibrations.)
Silencer Renew silencer every year and after desiccant
renewal.
Control air filter Inspect control air filter and clean or replace, if
necessary.
Dewpoint transmitter Renew. 50
Vacuum pump Inspect bearing and replace, if necessary.
Dust filter Check dust filter for contamination and clean, if
necessary.
Desiccant Check desiccant for contamination and replace, if
necessary.
49
52
Six-monthly
years
years
48
48
49
51
52
Preliminary and
afterfilter (optional)
When carrying out any maintenance work, please observe the following safety
instructions:
Please refer to the manuals of the installed filters for details on the maintenance tasks to
perform.
Danger!
Working on the dryer when it is switched on and under pressure entails a
substantial risk of injury.
Before starting maintenance work, always shut down the dryer as
described on page 42, !
Risk of injury posed by hot surfaces!
The dryer's surfaces may remain very hot even after it is switched off. Do
not touch hot surfaces!
Wait until the surfaces have cooled down sufficiently before starting work
on the dryer.
46 WVM_BASIS_EN_03—07/2016
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Electric current warning!
Work on the electric system must only be carried out by qualified
technical personnel!
Cleaning
► Remove dust with dry cloth; use moist cloth, if necessary.
► Clean all surfaces, e.g. at the operating panel, with a moist cloth.
Daily maintenance tasks
Complete visual inspection and function test of the entire dryer
► Inspect dryer for visual damage and unusual noises.
► If your dryer is not connected to a fault signalling system (see page 34),
check whether there is an error message on the display at the switch cabinet.
Assess any existing fault messages (heed the malfunction table in the
controller manual!).
► Check whether compressed air has reached the set pressure dewpoint. In
units equipped with dewpoint-dependent control (optional), the dewpoint is
shown at the display.
Check dam pressure
If, following depressurisation of a vessel, e.g. after the expansion phase, the
overpressure has not decreased to < 0,5 bar, then there is a residual pressure,
designated as dam pressure, in the vessel.
► Check for dam pressure: if the dryer functions correctly, the respective
pressure gauge indicates < 0,5 bar. Then there is no dam pressure.
If the dam pressure is greater than < 0,5 bar:
► Depressurise the dryer and shut it down (see page 42).
Dam pressure can be caused by:
a blocked muffler,
a malfunction of the expansion valve,
a leaking pressure build-up valve.
The respective necessary maintenance measures are described in the following
sections.
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► Wait until the dryer has reached the stand-by phase (see page 21).
Monthly maintenance
Inspect intake opening for regeneration gas
The regeneration gas is fed to the system through an intake opening at the
heater.
► Work with care and do not touch hot surfaces:
— After the vacuum pump has stopped, inspect screws at the intake
opening and retighten, if necessary.
— Remove dirt from the screen covering the opening, using a suitable tool
(e.g. soft wire brush).
Note:
It is feasible to install an intake filter or to supply the regeneration air
to the dryer via an air duct if the ambient air is heavily soiled. Please
note the respective hints in sections Options.
Six-monthly maintenance work
Check the screw and clamp connections
After six months at the latest, all the switch cabinet's screw and clamp
connections must be checked to ensure that they are secure. The maintenance
interval should be reduced in the case of a vibrating substrate or a vibrating
compressor feed line.
► De-pressurize the dryer and shut it down (see page 42).
► Switch off the electric power feed, and take precautions to prevent it being
switched back on.
► Check that all the screw connections and clamps in the switch cabinet are
secure, and tighten if necessary.
► Replace any corroded components immediately.
► Switch the electric power supply back on and close the switch cabinet.
► Restart the dryer.
48 WVM_BASIS_EN_03—07/2016
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Maintenance work to be completed every 12 months
Replacing the silencer
The dryer is equipped with silencers. A ram pressure builds up when a silencer is
blocked, which could even cause the silencer to burst.
Risk posed by a blocked silencer!
Dangerous excess pressure may develop at blocked silencers, causing
the silencers to burst. Flying debris could injure persons and damage
property.
Silencer elements should therefore be checked annually and replaced if
soiled.
Beware of sudden air blast!
Pressure suddenly escapes via the silencer during expansion:
A loud expansion noise occurs which may damage your hearing.
Particles carried along with the air flow can damage your eyes or skin.
For this reason you must always wear eye and hearing protection when
you are near the dryer!
► De-pressurize the dryer and shut it down (see page 42).
► Unscrew the silencer as shown in
the illustration to the right.
► Fit new silencer in place and screw
tight.
► Restart the dryer (see page 44).
Renew filter element of the control air filter
The control air filter is used to clean the control air and thus ensures that the
valve actuators are working properly. Contaminated or damaged control air filters
might lead to malfunctions in the valve actuators. The filter must therefore be
inspected at least once every year.
► Depressurise dryer and take out of service (see page 42).
Unscrewing the silencer
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Warning!
► Remove the base of the filter housing.
► Remove filter element by turning it.
► Renew filter element.
► Mount the base of the filter housing.
► Dispose of spent filter element according to
the statutory regulations.
► If no other maintenance work is required:
Restart dryer (see page 44). Check filter for
leaks.
Renew dewpoint sensor
In order to ensure accurate dewpoint measuring, we recommend annually
renew the dewpoint sensor at least every 12 months. The recalibration must
be carried out by the manufacturer. This period depends however on the
actual application and might thus be extended accordingly.
The dew point sensor is a sensitive measuring device. It can be damaged
if subjected to forceful vibrations or shocks. Therefore, please handle the
dew point sensor with great care at all times.
Open control air filter
In order to limit the impact on the dryer operation to a minimum, we recommend
that you contact the manufacturer well in advance (for contact details, see page
8) and order a new dewpoint sensor.
After receipt of the new pressure dewpoint sensor, replace the sensor as follows:
► Hold the box of the dewpoint sensor ready.
► Release pressure from dryer and shut down the unit (see page 42).
Installing / dismantling pressure dewpoint sensor
► Loosen the screw at the adapter (1) and disconnect signal cable with the
adapter and seal.
► Remove dewpoint sensor from the sensor cell (3) by turning the nut (2).
50 WVM_BASIS_EN_03—07/2016
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► Take the new dewpoint sensor (2) from the box, remove the protective caps
(4, 5) and screw it into the sensor chamber (3).
► Place seal onto sealing face; connect adapter (1) and secure it by tightening
the screw.
► If no other maintenance work is to be carried out: Restart the dryer (see
page 44).
► Place the protective caps (4, 5) onto the old dewpoint sensor and dispose of
it in a proper manner.
Maintenance work to be completed every 24 months
Inspect vacuum pump bearing and replace, if necessary
Caution!
Maintenance work at the vacuum pump may only be carried out by
authorised and suitably qualified technical personnel who have already
successfully completed similar tasks.
Please contact us to arrange a visit by one of our service technicians.
Alternatively, ask us for a training session for the servicing of the vacuum
pump. You will find the telephone number of our customer services
department on page 8.
Maintenance work to be completed every 48 months
To complete the following maintenance tasks, you must dismantle the pipe
bridges and the vessels. We therefore recommend that you carry out these tasks
together.
Note:
In accordance with national regulations, a pressure vessel inspection
may be prescribed to be carried out at regular intervals by an
independent supervisory office.
For an inspection of the pressure vessels, the drying agent must be
removed as described as follows.
When inspecting the pressure vessels, it is recommended to check
the condition of all fittings such as e.g. sieve bottoms and dust
sieves, including gaskets. If necessary, these fittings must be cleaned
or renewed.
In the event of comprehensive maintenance or repair tasks, contact
the manufacturer (see page 8).
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► Unscrew flange and screw
► Renew gaskets.
Disassembling of desiccant sieve
Replace desiccant sieve
Between vessel and upper arch pipe, desiccant sieves are fitted which retain the
drying agent dust. If these desiccant sieves become blocked, a dam pressure is
generated which can cause compressed air fluctuations in the compressed air
system.
For disassembling the desiccant sieves, the entire arch pipe must be removed
first.
Risk of falls!
The dryer must not be misused as a climbing aid! The components have
not been designed for such loads and could fracture.
Only use approved climbing aids when disassembling the upper arch
pipe.
► Depressurise dryer and take out of service (see page 42).
connections from the upper arch pipe
system (see figure).
► Withdraw upper arch pipe complete
with all mountings.
► Remove desiccant sieves and
gaskets.
► Clean desiccant sieves with
compressed air or a suitable tool (e.g.
soft wire brush).
► Mount cleaned desiccant sieves:
► Repeat the process on the second vessel.
► Re-mount and secure the upper arch pipe system.
► If no other maintenance work is required: Restart dryer (see page 44). Check
Renew desiccant
Generally desiccant has a service life up 3 to 5 years. Under favourable
conditions, the desiccant might not have to be replaced at that stage and can be
used for longer period (see also page 26). However, the service life depends
greatly on the contamination of the compressed air (or the effectiveness of the
preliminary compressed air filter respectively) and the contamination of the
ambient air at the site. Oil, dust and dirt particles tend to deposit on the desiccant
and thus reduce the effective adsorption surface. This damage is not always
reversible. If in doubt, have your desiccant assessed by our specialists.
— mount base gasket;
— insert desiccant sieve;
— mount top gasket.
that the connection is leak tight.
52 WVM_BASIS_EN_03—07/2016
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► Remove the plug at the sleeve, using a
sleeve. This procedure also cleans the screen
Caution!
Please observe the following safety instructions when replacing the desiccant:
Wear eye protection and a dust mask because of increased dust
formation!
Emptying the desiccant may lead to increased dust formation.
Wear goggles to avoid eye irritations!
Wear a dust mask to avoid inhaling the dust!
Risk of slipping!
Spilt desiccant beads lead to a risk of injury from slipping! Immediately
remove any spilt desiccant.
Remove spent desiccant
► Release pressure from dryer and shut down the unit (see page 42).
► Place suitable container below the discharge sleeve.
suitable tool.
► Collect desiccant in the container positioned
below the sleeve.
►
Remove any desiccant left in the vessel by
using an industrial vacuum cleaner at the
base and removes any residual material and
deposits.
► Equip the sleeve plug with a non-locking
thread seal and screw in. Check thread seal
and replace, if necessary.
► Repeat the procedure for the second vessel.
If the dryer has been improperly operated, the desiccant might be
contaminated with pollutants. Please take this into account when disposing of
the desiccant.
Notes on the disposal of used desiccant
As the used desiccant is contaminated with various substances, its properties
differ from those of new desiccant. For this reason, the manufacturer or supplier
of desiccant cannot give any information on the used product.
Deliver used desiccant to a controlled dumping while heeding local official
regulations.
Waste codes
Unused product: 060899 (European waste code).
Used product: These codes are governed by the industrial use and must
therefore be determined by the waste originator.
Removing plug from filler sleeve
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Filling vessel with new desiccant
Risk of falling!
Do not use the dryer as a climbing aid. The components are not designed
to bear such a load and may break.
Only use approved climbing aids when filling the vessel.
Note:
Filling can also occur via the main line socket. This is feasible if the
desiccant sieve is also cleaned or replaced (see page 52).
► Ensure that discharge sleeve is
closed.
► Unscrew the plug of the filling hole
with a suitable tool (see illustration).
► Slowly fill in new desiccant and make
sure to heed the next step. Use a
funnel if necessary.
Unscrew the sleeve plug
► Make sure to compact the filling in the vessel.
► Equip the sleeve plug with a non-locking thread seal and screw in.
► Repeat the procedure for the second vessel.
► Restart the dryer if no other maintenance work is required.
► Operate the dryer for two cycles, then shut it down again.
► Replace silencer as described on page 49 and restart the dryer.
54 WVM_BASIS_EN_03—07/2016
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AK
GS
Identify and eliminate faults
The following table provides information on what designatory abbreviations are to
be used for the various components. These designations are also found in the
technical documentation.
Abbreviation Component
AA
AR
AU
AV
BB
BF
BS Silencer
BT Dessicant
H
MT
PT
PI Pressure gauge
TT
Fittings, general
Butterfly valve
Check valve
Cardan shaft
4/2-way tap cock
Dummy plug/flange
Sieve bottom/desiccant sieve/flow distributor
Limit position monitor
Air heater
Moisture measurement/pressure dewpoint
Pressure measurement
Temperature measurement
TSH
V Vacuum pump
Delimiter thermostat
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Notes on error messages and errors
The error message from the dryer are displayed on the operating panel. The
controller manual provides appropriate information. You are given information on
the possible causes for the error and tips how to eliminate the error.
If the dryer is connected to a fault signalling system, all error messages are
transmitted through the potential-free busbar connection to the operator's control
room.
Also heed the following notes when working at the electric system:
Electric current warning!
Work on the electrical system must only be carried out by qualified
technical personnel! The electropneumatic switch cabinet in particular
must be opened and serviced by an instructed trained electrician only.
Caution!
Arbitrary changes to the factory settings of the control programme may
result in damage to the dryer.
56 WVM_BASIS_EN_03—07/2016
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Index
Wartungsintervall ................................................. 46
A
Address, manufacturer .............................................. 8
Adsorption, principle ................................................ 19
Ambient air .............................................................. 26
Ambient temperature ............................................... 26
Auxiliary heating system .......................................... 22
B
Betriebsanleitung ....................................................... 8
Build no. ............................................................ 45, 63
Bypass line .............................................................. 33
C
Changes to dryer ............................................... 14, 36
Circuit diagram ........................................................ 34
Commissioning, requirements ................................. 35
Compressed air ................................................. 13, 19
Connecting lines ...................................................... 33
Control
pressure dew point-dependent ............................ 22
Control air filter ........................................................ 17
maintenance interval ........................................... 46
Conversions............................................................. 13
Cooling phase, principle .......................................... 20
Cycle
fixed ..................................................................... 22
variable .......................................................... 21, 22
D
Danger notes
Danger! ................................................................ 10
Danger zones .......................................................... 12
Date of manufacture .................................................. 5
Desiccant
maintenance interval ........................................... 46
Desiccant
handling ............................................................... 14
Desiccant
service life ............................................................ 52
Dewpoint transmitter
maintenance interval ........................................... 46
Dewpoint-sensing control ........................................ 22
Direction of rotation of vacuum pump ...................... 38
correct.................................................................. 39
incorrect ............................................................... 39
Discharge sleeve ..................................................... 17
Documents, technical .............................................. 60
Drucktaupunktsensor
Dryer
maintenance interval............................................ 46
Drying agent
charging ............................................................... 22
storage ................................................................. 30
Dust filter
maintenance interval............................................ 46
Dust formation ................................................... 14, 53
Dust mask ................................................................ 14
E
Emptying hole .......................................................... 54
Error tracking, procedure ......................................... 56
Example of installation ............................................. 33
Expansion valve ...................................................... 18
Expansion, principle ................................................ 20
F
factory settings ........................................................ 15
Fan wheel ................................................................ 38
Fault signalling system ............................................ 34
Filler sleeve ............................................................. 17
Fixed cycle ............................................................... 22
Footprint area .......................................................... 27
Fuses ....................................................................... 38
H
Heater ...................................................................... 18
Heater
release button ...................................................... 18
Heater combination ................................................. 23
heater, intake opening ............................................. 48
Heating phase, principle ....................................... 20
I
Inspecting direction of rotation of the vacuum pump 38
Insulation and protction against contact .................. 22
Intake filter ............................................................... 23
intake opening
maintenance interval............................................ 46
Intake socket ........................................................... 23
L
Liability....................................................................... 9
Lieferumfang .............................................................. 8
Lifting devices .......................................................... 27
lifting gear .......................................................... 14, 25
Limit values
WVM_BASIS_EN_03—07/2016 57
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permitted ..............................................................15
Limit values, permitted .............................................37
Location of installation, requirements .......................26
Loop regeneration ....................................................23
M
Machine damage, prevention ...................................11
Machine passport ...................................................... 5
Main inlet valve ........................................................17
Maintenance
control air filter ......................................................49
dam pressure .......................................................47
desiccant sieve .....................................................52
dessicant ..............................................................52
silencer .................................................................49
Maintenance contract ...............................................45
Maintenance, risk information ..................................46
Manufacture number ................................................. 5
Media
aggressive ............................................................. 9
Misuse ......................................................................13
Misuse, suspected ...................................................13
Modifications on the dryer ........................................13
Modifications to dryer .........................................14, 36
N
Notes
safe, efficient handling ..........................................10
O
Operating gauge pressure
Safety device ........................................................31
Operating instructions
safe place .............................................................10
safety notes ..........................................................11
target group ..........................................................10
Operating manual ...................................................... 8
Operating panel ........................................................36
Operating pressure
permitted ............................................................... 5
Original replacement parts .................................15, 45
Oscillation absorber .................................................29
Outdoor installation ..................................................22
P
Paint compatibility
Variant ..................................................................24
Parameters
preset .................................................................... 9
Personnel qualification ............................. 9, 11, 13, 47
Pressure build-up valve ............................................17
Pressure build-up, principle ..................................21
Pressure drop
abrupt .................................................................. 38
Pressure drop
abrupt .................................................................. 38
Pressure increase
abrupt .................................................................. 37
Pressure transducer ................................................ 17
pressure vessel ................................................. 15, 45
R
Regeneration, principle ........................................... 19
Regulations for accident prevention ........................ 25
Replacement parts ............................................ 15, 45
Resistance thermometer ......................................... 18
Risk information, maintenance ................................ 46
Risk of crushing .................................................... 12
Risk of slipping ........................................................ 12
S
Safety notes ............................................................ 11
general ................................................................ 13
operating phases ................................................. 14
Warning! .............................................................. 10
Safety valves ..................................................... 31, 35
Schallpegel .............................................................. 62
Short circuit ............................................................. 34
Shut-off valves ........................................................ 33
Silencer
maintenance interval ........................................... 46
Specialist personnel .......................................... 10, 31
Statutory safety regulations ..................................... 28
Steam heat exchanger ............................................ 23
Stop valves .............................................................. 37
Storage room
Requirements ...................................................... 29
Supply lines ............................................................. 31
Supply, electric ........................................................ 34
Surfaces, hot ................................................12, 43, 46
Switch cabinet
maintenance interval ........................................... 46
Switch cabinet ......................................................... 17
Switch cabinet
screw connections ............................................... 48
T
Target group ............................................................ 10
Terminal strip
electrical .............................................................. 34
fault signalling system ......................................... 34
Transport damage ................................................... 25
U
Unterlagen, technische .............................................. 8
Use, intended .......................................................... 13
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Use, safe ................................................................... 9
V
Vacuum pump
maintenance interval ........................................... 46
Vacuum pump ......................................................... 18
Vacuum pump ......................................................... 20
Variable cycle .......................................................... 22
Vessel pressure gauge ............................................ 17
Visual inspection ...................................................... 47
Voltage .................................................................... 12
electrical .............................................................. 34
W
Warranty .................................................................... 9
Weather protection .................................................. 26
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Appendix: Technical Documents
The appendix of this operating manual contains the following technical
documents and data::
Technical data
List of service and desiccant kits
Process diagram
Pneumatic diagram of the control air unit
Dimension drawing
Electrical diagrams
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Total connected load Desiccant per dryer
Flow rate of vacuum
pump** Flow rate of vacuum
pump** DTP
DTP
Typ
m3/h
m3/h
kW
kg
m3/h
mbar
*
Technical data – overview of standard dryers
Note:
For dimensions and weight of the dryer refer to the enclosed
dimensional drawing!
Nominal capacity*
WVM 40
WVM 50
WVM 65
WVM 85
WVM 120
WVM 150
WVM 200
WVM 235
WVM 300
WVM 355
WVM 410
WVM 475
-25°C
420 378 5,55 ~136 125 25
510 459 5,55 ~171 125 25
640 576 9,70 ~207 210 25
850 765 9,70 ~260 210 25
1180 1062 13,40 ~400 300 25
1500 1350 18,20 ~470 375 25
1980 1782 23,70 ~656 550 25
2350 2115 36,70 ~827 750 25
2930 2637 36,70 ~910 750 25
3550 3195 43,70 ~1178 900 25
4100 3690 43,70 ~1348 900 25
4740 4266 48,70 ~1652 1150 25
-40°C
WVM 525
WVM 620
WVM 710
WVM 800
WVM 920
WVM 1080
WVM 1230
WVM 1450
relative to 1 bar (abs.) and 20 °C at 7 bar operating pressure and a feed temperature of 35 °C and a pressure
dewpoint of -25 °C.
** related to a differential pressure of 100 mbar.
5250 4725 63,20 ~1718 1460 25
6210 5589 73,20 ~2153 1460 25
7100 6390 84,20 ~2425 1800 25
8000 7200 89,20 ~2967 1800 25
9200 8280
10800 9720
Upon request!
12300 11070
14500 13050
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Top
Silica gel
Silica gel
Bottom
waterproof Silica gel
waterproof Silica gel
Fill quantities Dessicant
B1
B2
Note on load cycle calculation:
According to the EC pressure equipment directive the dryers are rated
for 14,000 load cycles. This corresponds to a service life of approx. 20
years when operated in the fixed cycle of 6 hours (12 h total cycle
time). 1 load cycle corresponds to the change from the unpressurised
state to operating pressure.
When the pressure vessels are approved according to other
regulations, different load cycle calculations apply accordingly.
Typ WVM 40 – WVM 1450
Fluid class (according to PED) 2
Supply voltage see type plate
Protection class IP 54
Operating overpressure (bar) see type plate
Ambient temperature (°C) 1 50
Max. intake temperature for regeneration air (°C)
(please heed the table below that relates the moisture of the intake air to the
temperature)
ax. dust contents of the regeneration air (mg/m³)*
Noise level : +3 dB (A) related to free-field measurement, 1 m surrounding
field db(A)
* Note: Provide for an appropriate dust filter when the regeneration air taken in
has a higher dust load. Contact the manufacturer in this case!
min max
1 40
— 50
75 90
Regeneration air – maximum relative humidity at defined intake temperature
max. rel. humidity (%) at intake temperature (°C)
90 20
70 25
50 30
37 35
25 40
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Maintenance
interval
WVM 40
WVM40DESMIX
WVM 410
WVM410DESMIX
WVM 50
WVM50DESMIX
WVM 475
WVM475DESMIX
WVM 300
WVM300DESMIX
WVM 1230
WVM1230DESMIX
WVM 355
WVM355DESMIX
WVM 1450
WVM1450DESMIX
Spare parts list
Note:
Service kits (wear parts kits, valid for 10 bar variants)
When exchange or replacement parts are ordered, always state the
dryer type and the build no. of the dryer. These data are found on the
type plate.
Order no. For model
SKW40-W1450/VM4/12 WVM 40 - 1450
SKW40-W355/VM4/24 WVM 40 - 355
SKW410-W710/VM4/24 WVM 410 - 710
SKW800-W1080/VM4/24 WVM 800 - 1080
SKW1230-W1450/VM4/24 WVM 1230 - 1450
SKW40-W50/VM4/48 WVM 40 - 50
SKW65-W85/VM4/48 WVM 65 - 85
SKW120-W200/VM4/48 WVM 120 - 200
SKW235-W355/VM4/48 WVM 235 - 355
SKW410-W710/VM4/48 WVM 410 - 710
SKW800-W1080/VM4/48 WVM 800 - 1080
SKW1230-W1450/VM4/48 WVM 1230 - 1450
12/36 months
24 months
24 months
24 months
24 Monate
48 months
48 months
48 months
48 months
48 months
48 months
48 months
Purchased parts package
Control air filter element, pilot valves
Control air filter element, pilot valves, wear
parts kit for the expansion valve (V5), wear
parts kit for the pressure build-up valve (V4),
Control air filter element, magnet valve, wear
parts kit for the expansion valve (V5), wear
parts kit for the pressure build-up valve (V4),
wear parts kit for the regeneration gas flap
(V3), check valve (RV)
Desiccant packs*
For model Order no.
WVM 65 WVM65DESMIX WVM 525 WVM525DESMIX
WVM 85 WVM85DESMIX WVM 620 WVM620DESMIX
WVM 120 WVM120DESMIX WVM 710 WVM710DESMIX
WVM 150 WVM150DESMIX WVM 800 WVM800DESMIX
WVM 200 WVM200DESMIX WVM 920 WVM920DESMIX
WVM 235 WVM235DESMIX WVM 1080 WVM1080DESMIX
*including all fill materials, seals and flow distributors
WVM_BASIS_EN_03—07/2016 63
For model Order no.
Page 64
Additional spare parts
For model
WVM 40-50 GasKIT40W 1 Flat gasketsDN40
WVM 65-85 GasKIT50W 1 Flat gasketsDN50
WVM 120-200 GasKIT80W 1 Flat gasketsDN80
WVM 235-355 GasKIT100W 1 Flat gasketsDN100
WVM 410-710 GasKIT150W 1 Flat gasketsDN150
WVM 800-1080 GasKIT200W 1 Flat gasketsDN200
WVM 1230-1450 GasKIT250W 1 Flat gasketsDN250
WVM 40-355 SDD-25/AL 1 Silencers
WVM 410-1080 SDD-25/AL 2 Silencers
WVM 1230-1450 SDD-40/AL 6 Silencers
WVM 40-1450 ZHM100/450 1 dewpoint sensor
WVM 40-50 RKSCD-F40/16/VA 1 flow distributors
WVM 65-80 RKSCD-F50/16/VA 1 flow distributors
WVM 120-200 RKSCD-F80/16/VA 1 flow distributors
WVM 235-355 RKSCD-F100/16/VA 1 flow distributors
WVM 410-710 RKSCD-F150/16/VA 1 flow distributors
Order no. Quantity Purchased parts package
WVM 800-1080 RKSCD-F200/16/VA 1 flow distributors
WVM 1230-1450 RKSCD-F250/16/VA 1 flow distributors
64 WVM_BASIS_EN_03—07/2016
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