Colasit CHVS User manual

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 1
OPERATING MANUAL CHVS / CHVK
High pressure – Plastic industrial fan
COLASIT Order No.:
Fan Type:
Year of manufacture:
For use in Ex zones Not for use in Ex zones
TD-000 680-E
Agent: COLASIT AG – Faulenbachweg 63 – CH-3700 Spiez
Tel. : [phone] – Fax : [phone]
e-mail: [email protected]

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 2
Preface
This operating manual is the driver's license for the operation of this COLASIT fan. It is the main source of
information and also the safety guideline. It deserves your full attention - please read it carefully.
The contents of this operating manual are subject to change without notice in order to take technical
progress into account. In order to match this operating manual to your COLASIT fan, please register the
following particulars of the fan below, whereby reference should be made to the manufacturer’s nameplate.
Whilst reading this manual, you will be guided by symbols which indicate dangers and especially important
references.
Very important reference
Generally valid danger warnings which concern your personal safety
Reference to electrical dangers
Reference to dangers resulting from the process environment
The entire operating manual consists of 3 parts
Part 1: General
Part 2: Components
Part 3: Certification

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 3
Table of contents
Part 1: General ...........................................................................................................................................................4
1General................................................................................................................................................................4
1.1 Definition........................................................................................................................................................4
1.2 Manufacture of COLASIT fans ......................................................................................................................4
1.3 Warranty ........................................................................................................................................................4
1.4 Safety review .................................................................................................................................................5
1.5 Qualification of personnel ..............................................................................................................................5
1.6 Possible emergencies ...................................................................................................................................5
1.7 The safety inspector (So) ..............................................................................................................................5
1.8 General risk matrix.........................................................................................................................................6
1.9 EU conformity of the COLASIT fan................................................................................................................7
1.10 Restrictions when commissioning .................................................................................................................7
1.11 General operating conditons .........................................................................................................................7
2Explosion protection ............................................................................................................................................8
2.1 Fan EX marking .............................................................................................................................................9
2.2 Correct installation of ATEX fan ....................................................................................................................9
3Shipping, unpacking, inspection, storage............................................................................................................9
4Installation, design.............................................................................................................................................10
5Commissioning, initial start up, test run.............................................................................................................10
5.1 Inspection of the installation and settings....................................................................................................10
5.2 Drive ............................................................................................................................................................11
5.3 Electrical installations, EMERGENCY - STOP............................................................................................11
6Operation...........................................................................................................................................................11
6.1 Safety regulations........................................................................................................................................11
6.2 Decomissioning ...........................................................................................................................................12
7Maintenance, repair, cleaning ...........................................................................................................................12
7.1 Preparation ..................................................................................................................................................12
7.2 Performance ................................................................................................................................................13
8Spare parts ........................................................................................................................................................14
9Operating instructions .......................................................................................................................................14
10 Log-book......................................................................................................................................................14
11 Disposal .......................................................................................................................................................14
12 Faults and fault clearance ...........................................................................................................................15
13 Retrofittable original accessories.................................................................................................................16
Part 2: Components..................................................................................................................................................16
14 Design and function CHVS / CHVK.............................................................................................................16
15 Dimension....................................................................................................................................................17
15.1 Dimension of the CHVS / CHVK with direct drive .......................................................................................17
15.2 Dimension of the CHVS / CHVK with V-belt drive.......................................................................................18
16 Assembly instructions..................................................................................................................................19
16.1 Assembly instructions for CHVS / CHVK with direct drive ..........................................................................19
16.2 Assembly instructions for CHVS / CHVK with V-belt drive..........................................................................20
17 Spare parts list.............................................................................................................................................21
17.1 Spare parts list for CHVS / CHVK with direct drive .....................................................................................21
17.2 Spare parts list for CHVS / CHVK with V-belt drive.....................................................................................22
Part 3: Certification ...................................................................................................................................................23
18 Certification..................................................................................................................................................23
18.1 EC Declaration of Conformity ......................................................................................................................23
18.2 ATEX Declaration of Conformity..................................................................................................................24
18.3 Other certificates..........................................................................................................................................26
19 Form fort he correct assembly of ATEX fans ..............................................................................................27

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 4
Part 1: General
1 General
OBLIGATIONS
Prior to any work done on or with the fan, we put you under an obligation to read
this operating manual and any further contractors’ operating instructions carefully
and through to the end.
Should anything not be clear, please get in touch with us immediately. Do not put
the fan into operation as long as uncertainties exist.
With the commissioning of the fan you confirm that you have read and
understood the operating manual.
After having become acquainted with the fan and its operational performance
together with your production process, we recommend that you make a note of
the different modes of operation in a “process instructions” document.
Together with this operating manual, any acceptance documents such as ATEX, works acceptance
certificates and the EC declaration of conformity, the process instructions document forms part of the
complete system documentation.
For the fan, a separate risk analysis was made as a prerequisite for writing this operating manual.
Risks were evaluated and any remaining residual risks are pointed out in this operating manual.
1.1 Definition
The term "COLASIT fan" stands for a Swiss high-quality product and contains all those components and
individual parts, as compiled in the purchase order or in the material parts list respectively, which, when
assembled, form a functional unit.
1.2 Manufacture of COLASIT fans
The fan was manufactured using to modern manufacturing methods and was extensively tested both during
manufacture and as a finished product by the COLASIT quality assurance system. The methods and
procedures used for manufacture and production monitoring correspond to the state of the art. The
personnel entrusted with the manufacture of the fan have the appropriate skills and possess valid
qualifications.
All fans complete a successful test run in the manufacturer’s facilities.
1.3 Warranty
The warranty ends on the date stated in the general terms of sale and delivery. Warranty is limited to the
delivery of spare parts or the repair of defective parts in the manufacturer’s works. Any further claims or the
replacement of expendable items or of items subject to normal wear and tear are excluded.
We guarantee the availability of spare parts identical in construction to the original over a period of 10 years
effective from the date of delivery.
COLASIT only guarantees the stability of materials under the condition that technological data was available
before production.
Any change in the conditions of use is only permissible after approval by COLASIT; otherwise this entails the
loss of warranty.
Any changes or repair work during the warranty period may only be made by our fitters or with our written
consent.
We refer to the limitation of warranty noted in the “drive“section in the case where a frequency converter
supplied by a third party is used.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
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The fan must be deployed and used in accordance with the conditions mentioned
in this operating manual. Only in this way can its function be guaranteed and
dangers for persons and material be excluded during operation. We accept no
responsibility or guarantee claims for damages arising from non-observance of
this manual or from inappropriate operation.
1.4 Safety review
After having installed the fan, we recommend checking out the entire operating situation by means of a risk
analysis. In this way it can be guaranteed that neither the fan suffers damage nor that the fan causes any
damage.
1.5 Qualification of personnel
The fan must only be put into operation, handled, operated, maintained and cleaned by trained personnel
who are authorised (and competent) to carry out such work.
The personnel must possess the appropriate skills needed to operate the fan and be familiar with the effects
of the reactions caused by the fan.
The personnel qualified for the operation of the fan must be able to react adequately and correctly in the
case of a fault or an emergency.
1.6 Possible emergencies
An emergency results from the bursting or melting of plastic components as a result of mechanical damage
or chemical and thermal influences. In this case, parts may fly off and vapours may be produced which could
be hot, corrosive, poisonous, irritating or inflammable. (e.g. hydrochloric acid vapour if PVC gets burnt).
A danger of fire exists under certain conditions.
For the choice of the correct fire-extinguishing devices and the positioning of the fire-fighting equipment,
please follow the recommendations of your official fire-prevention agency.
1.7 The safety inspector (So)
The function of the safety inspector or his representative is defined in the operating company’s
organisational chart. The name of the person must be known to all personnel who are responsible for the
fan. The operating company defines his competencies and his area of responsibility.
The safety inspector approves the fan for operation.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
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1.8 General risk matrix
Operation
The safety regulations in effect at the operator’s location are mandatory and are
to be observed at all times. During operation, parts of the body or objects must
never be brought within the reach of the fan. Before making an intervention, the
process must be stopped i.e. all mechanical movement is to be stopped and it is
to be ensured that no self-acting motion can occur.
Missing protective equipment
If the fan is equipped with safety equipment, this equipment must neither be
modified nor removed. Further protective devices of a suitable construction are to
be mounted by the operator and are subject to his control.
Disregard of safety precautions
Please implement all safety measures, in order that the fan, together with its
associated equipment, works properly and so that any danger to persons,
materials and products can be excluded.
Decommissioning
In the case of damage or malfunction of protective equipment, the fan is not to be
used any more. It may only be put into operation again when the protective
equipment is full functional again.
Overpressure
If the fan is operated under overpressure conditions with normal seals, the
danger of gas escape exists. For operation under overpressure conditions,
special seals are to be employed.
Electric power
When any work is done on the fan, the electric drive is to be isolated from the
electrical supply and it is to be made sure that it cannot be reconnected. The
main power switch has to be secured against operation by third parties using a
lockable device (e.g. padlock) by the persons working on the fan. The full
disconnection of the motor is only permissible in case of complete
removal! The safety regulations for work on electrical equipment in effect at the
place of operation must be observed at all times and be available at the place of
operation.
Electrostatic charge
Because of media flowing in the plastic components, electrostatic charges can
build up. These are harmless for persons who do not respond to electrical
impulses in the body.
Unsuitable materials
Through the use of inappropriate materials, the fan and/or parts of it can be
damaged or become non-operable. Please always use original spare parts and
contact the manufacturer in any case of doubt.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
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Dangerous media
Depending on the mode of operation, fan parts are in contact with dangerous
media.
Work on the fan or the carrying out of maintenance work is not allowed during
operation. Before carrying out any work, the system has to be freed from any
dangerous media and, when required, to be neutralised and secured in such a
way that an inflow of dangerous media is prevented.
1.9 EU conformity of the COLASIT fan
The fan was designed, built and tested to Directive 2006/42 EC.
In addition to this EC Directive and EN standards which have the equivalent status of a Swiss standard,
Swiss safety and accident-prevention regulations have also been taken into account.
An EC Declaration of Conformity in terms of the EC guidelines 2006/42 EC on machines will be issued
along with the fan.
1.10 Restrictions when commissioning
We stipulate that putting into operation is prohibited as long as the fan, including
all parts belonging to it or equipment connected to it, has not been installed and
checked out and until the operating manual has been read completely before
commissioning.
We stipulate that the fan may only be put into operation when the safety inspector
has given his approval. He is obliged to record this approval in a protocol.
The disregard of these stipulations constitutes negligence.
1.11 General operating conditons
The permissible operating conditions are indicated on the manufacturer‘s plate.
The fan is not suitable for the transport of solids in the air flow. This operating
mode will lead to the destruction of the fan.
The ducts on the intake and delivery sides must always be open. A closed duct will lead to a rise in
temperature which could cause the destruction of the fan.
The minimum air speed through the fan is 5 meters per second.
The maximum air speed may not exceed 30 meters per second through the fan.
The standard motors are designed for normal operating conditions (ambient temperature. +40°C, location
under 1000 m above sea level, air pressure up to 1050 hPa). In the case of divergence from these
conditions, please contact COLASIT.
Compliance with these operating conditions is the responsibility of the operator.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
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2 Explosion protection
COLASIT plastic fans are suitable for the conveyance of gases in Zone 1 or 2 (Equipment Category
1 or 2) depending on the model. COLASIT plastic fans are not suitable for the conveyance of gases
in Zone 0 (Equipment Category 1).
The zone classification of the conveyed medium and the site of installation must be made known by
the fan operator so that COLASIT can take the necessary measures to prevent the risk of ignition.
The explosion-proof COLASIT fans are not suitable for the conveyance of
explosive dusts.
No modifications may be made to ATEX-certified fans. All work on the fan may
only be carried out by ATEX-trained skilled personnel.
Otherwise the ATEX Certificate will lose its validity.
On ATEX certified fans, the external grounding terminal of the motor and fan
must be connected to a potential equalization system.
Motors with protection type "e" are standard for using in the explosion-proof design of our fans. The
standard version of the motors used complies with temperature class T3 (maximum surface temperature
200ºC). As special-purpose design, motors with protection type "d" or motors with temperature class T4
(maximum surface temperature 135°C) are also available.
The user must define a suitable temperature class for his application that does
not reach the ignition temperature of his conveyed medium.
Please also observe the specifications in the operating instructions of the motor
manufacturer.
The thermal motor protection must be connected in compliance with the
manufacturer's specifications (operating instructions).
If a frequency converter is fitted, we recommend using pressure-proof enclosed
motors. In addition, a certified PTC resistor releasing device must be fitted.
The following specifications must be included on the motor rating plate: min and
max frequencies, min and max speeds, min and max torque or output, limit
temperature PTC and PTC release time.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
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2.1 Fan EX marking
The Ex marking is located on the rating plate of each ATEX fan. On a fan of Equipment
Category 2 (Zone 1), it looks like this:
II 2/3G c T3
CE-marking
Marking denoting prevention of explosions
II Equipment Category II, for all Ex-applications which do not
fall in Class I (mines and surface workings).
2/3G Equipment Category inside/outside the fan
Equipment Category 2 is the equivalent of Zone 1 and
Equipment Category 3 is the equivalent of Zone 2
“G“ fan for the conveyance of explosive gases
c Protection type “design safety“
T3 Temperature class T3: Max. surface temp. 200 °C
T4: Max. surface temp. 135 °C
2.2 Correct installation of ATEX fan
The fan must be installed properly to guarantee trouble-free operation. To document proper installation, you
will find a form on the last pages of this operating manual. The fitter must confirm the proper installation item
for item on this form.
The signed form must be kept by the safety officer or operating company.
COLASIT also offers a comprehensive installation service for fans.
3 Shipping, unpacking, inspection, storage
The fan is completely assembled and can be delivered in a closed film wrapping.
Please make sure the delivery corresponds to the shipping documents.
Please examine the packaging for external damage and report any damage
immediately to the transport company, the supervisor and the manufacturer
Please handle the fan with care. During transportation, only apply strain on the steel parts. Plastic is
sensitive to impact and knocks, especially in the temperature range under +5°C.
When the film is removed, the intake and pressure nozzles are open and
unprotected against the intrusion of foreign objects. Therefore, please do not
remove the protective film until shortly before final installation.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
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Storage
If the fans are not put into operation immediately, store them in a clean dry place
where they are protected from impacts, vibrations, and temperature fluctuations
and where the air humidity is under 90%.
If these storage conditions are not available, switch the fans on at regular intervals
to exclude the risk of condensate forming. Before switching on, unscrew the
condensate drain plugs each time and replace them afterwards.
Store the fan in a dry, weather-protected place and cover with a tarpaulin to protect it from dust and
soiling.
If stored for over one year, test whether the fan bearings rotate freely before putting into operation.
4 Installation, design
Before installation, check whether all the locking screws (including the motor
screws) are tightened properly.
Check the electrical connections if wired at the factory.
Before installation, check that there are no foreign bodies in the coil or in the
intake and pressure connections.
The fan must be installed at a location provided and prepared by the customer and must be secured and
connected in such a way that any possible vibration occurring can be absorbed by the vibration dampers
supplied by COLASIT.
If no ducting is foreseen on the intake side, the intake connection should be protected by a sturdy protective
grating (10mm mesh) to be provided by the customer.
Connection ducting on the pressure side must be routed to prevent the backflow of foreign bodies, rainwater
or condensate into the fan. To ensure this, please use the COLASIT condensate drain nozzles.
Due to the possibility of noise nuisance, we recommend that the fan should not be installed in the immediate
vicinity of workplaces.
The fans of category 2 (zone 1) must be grounded.
5 Commissioning, initial start up, test run
The fan should only be put into operation after inspection and approval by the
safety inspector has taken place.
5.1 Inspection of the installation and settings
Check list:
Prior to commissioning and initial start-up, it must be guaranteed that..
Fthe fan is installed vibration-free and mechanically secured,
Fall components are cleaned both on the inside and the outside and are free from foreign bodies,
Fall intake and delivery ducts are connected in a leak-proof and elastic manner,
Fall rotating parts are protected against unintentional contact,
Fthe electrical connections are installed and their function tested,
Fa lockable main control switch is available to which the fan is connected,
Fthe EMERGENCY-STOP equipment is functionally tested,
Fthe safety inspector has made sure that safety equipment exists,
Fthe operating personnel is familiar with the operating manual,

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
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Fthe safety inspector has given his approval for the operation of the installation and that no external
persons are present in the plant area
If envisaged by procedural regulations provided by the operator, minutes have to be taken on the
commissioning work, including the observance of the check list.
5.2 Drive
The fan is driven by an electrical motor which is connected either directly or via a v-belt to the impeller shaft.
Data on the electrical connection of the motor are indicated on the motor’s data plate or in the motor
manufacturer’s data sheet.
When speed is controlled by means of a frequency converter, the maximum rotational speed is limited by
COLASIT to the value indicated on the manufacturer’s plate.
If the frequency converter is not provided by COLASIT, the operator is
responsible for the observance of the maximum rotational speed limit. In this
case, COLASIT does not assume any liability for damage that can be attributed
to exceeding the maximum rotational speed.
5.3 Electrical installations, EMERGENCY - STOP
The electrical installations may only be carried out by an authorised electrician in accordance with the
regulations valid at the site at which the fan is installed.
For the interruption of the power supply, an EMERGENCY-STOP switch is to be provided. It is advisable
that this switch be mounted in the vicinity of the emergency exit.
Please request confirmation from the in-house electrician that the electrical installations were carried out and
tested in accordance with regulations, that all functions have been tested (or simulated) and that the
rotational direction is correct.
Caution
Do not turn power on or off without prior warning to persons in the area where the
fan is operating. Switching operations must be co-ordinated with other functions
in the working area of the fan.
6 Operation
6.1 Safety regulations
The fan is to be operated according to this manual. In doing so, you will avoid
possible damage.
Supervision
The fan must not be operated unattended as long as it conveys substances,
whose reactions are unknown or if unexpected reactions are to be anticipated.
If the supervision has to be withdrawn for operational reasons, this has to be
reported to the safety inspector and the plant has to be secured in such a way
that no unauthorised manipulation can be carried out. The safety inspector
decides on questions regarding supervision.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
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6.2 Decomissioning
An internal procedure instruction regulates the work to be carried out as well as the preparatory work for re-
commissioning (e.g. cleaning).
7 Maintenance, repair, cleaning
7.1 Preparation
Before any work is carried out on the fan, it has to be brought into its "safety
position".
The "safety position" is defined as follows:
- Drive is de-energised, the main control switch is secured against switching on,
- The fan impeller can be manually rotated,
- Fan flushed with fresh air and condensate-free,
- Fan is at room temperature,
- Personal protective equipment is available and its use is ordered. (Use of protective gloves because
of sharp edges, ear protectors if necessary).
- A sign, e.g. “in revision", is to be attached to the plant,
- The safety devices may be removed,
- The work to be carried out must not be done under time pressure,
- The general and specific regulations on accident prevention as well as the EKAS guidelines
(Switzerland) are to be observed,
- The safety inspector is informed about the nature and the course of the works.
If the intake and delivery ducts of the fan are dismounted for a longer period of time, the openings are to be
closed off.

COLASIT AG
Plastic construction
CH-3700 Spiez
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7.2 Performance
The fan must be maintained in accordance with the Maintenance Plan below. The maintenance work carried
out must be noted down in the logbook (see the section on Logbook).
Every week Every month Every year
xMake a visual inspection of fan
for damage, leaks, corrosion
and attachment.
xCheck the smooth running of
the fan and electric motor.
xCheck state and tension of the
V-belt and replace if necessary.
xCheck the impeller and casing
for deposits and clean if
necessary.
xCheck the shaft bearing for
smooth running and
vibrations. Bearing
maintenance -> see chart
below for regreasing intervals.
xRemove any dust deposits on
the fan and motor.
xCheck the flexible transitions
from fan to duct system for
leaks and state.
xCheck the function of the
condensate nozzle.
xCheck the state of the
vibration dampers.
xCheck the state of the hub
gasket (if fitted).
xCarry out a thorough cleaning
of the entire fan (including
impeller).
xCheck the parts in contact
with the conveyed medium
for corrosion.
xCheck the minimum clearance
between the impeller and
casing (minimum 1% of
intake diameter, maximum
20mm).
xMeasure the vibrations at
bearings (KA) or motor (DA).
Permitted value acc. to ISO
14694 Class BV-3, 5.1mm/s.
xCheck the safety devices (e.g.
splinter protection or intake
grating) for condition and
function.
xCheck the stands for damage
and stability.
xCheck all screw unions for
firm seating.
Normally the bearings are designed for a service life of 40,000 hrs. After this
period the bearings must be replaced. The service life of the bearings is reduced
when subjected to increased requirements (e.g. high temperature, aggressive
ambient air or operation with frequency converter).
On drives with V-belts, check the tension regularly and monitor the belts closely particularly during the first
weeks of operation. This also applies after long periods of downtime. Excessive tension leads to bearing
damage, insufficient tension leads to slip, wear and frictional heat.
After replacing a V-belt, check the tension after 1 to 4 hours of operation and retension as necessary.
Components which are not intended for repair by the operator must be sent to the manufacturer or
agent for repair or replacement (e.g. damaged impeller).
Your agent or COLASIT
also offers customer services
COLASIT AG
P.O. 85
CH 3700 Spiez / Switzerland
Phone.: [phone]
Fax.: [phone]
Manufacturer
e-mail [email protected]
Agent see page 1

COLASIT AG
Plastic construction
CH-3700 Spiez
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Deposits on the impeller and soiling lead to imbalance and as a result to
vibrations with undesirable side effects.
If vibration occurs, switch the fan off immediately.
Contamination and encrustations should be removed with a soft tool without damaging the surface (e.g. with
a wooden spatula or scraper).If possible, use water and a household cleaning agent.
Solvents can corrode the material. These may only be used with the written
consent of COLASIT.
To carry out cleaning work, we recommend the production of a process instruction.
8 Spare parts
Please identify components by means of the item and drawing numbers as well as the order number and
model designation.
Use only original spare parts. Our warranty is void if other or unapproved components are used.
Please address your spare parts order to our customer service department
9 Operating instructions
For the operation of the fan, we recommend the preparation of process instructions documentation. Such
documents simplify repetitive workflows, reduce the risk of incorrect operation and are a valuable aid when
personnel changes occur and for training.
If the fan must be qualified, process instruction documents are required.
You will find important notes on the preparation of process instructions in various chapters of the operating
manual.
To help ensure the safe operation of the fan, COLASIT offers, as a service, the
review of process instruction documents prepared by the operator.
10 Log-book
For your own safety and as a contribution to personal responsibility, we recommend the keeping of a log
book for the entire operation in which the fan is in use.
All events should be registered in the log book.
In the case of damage and also in the case of an accident, this document is the first source of
information.
Please register the following together with, for example, date and signature:
- beginning and end of a work cycle
- special occurrences, even it these do not concern the fan itself (e.g. power failure, alarm)
- change of persons responsible for monitoring (e.g. in the case of shift operation)
- repairs carried out and spare parts installed
- decommissioning
- special instructions
- etc.
11 Disposal
Before disposing of plastics and other components, (complete or as broken parts), please clean them as
necessary to preclude any danger to the environment.
Dispose of the components correctly. Instruct a waste-management company to do this or return them to us
for disposal.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
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12 Faults and fault clearance
If faults occur, we recommend that you identify and clear them using the following table.
If the fault cannot be cleared, please contact our customer service.
Operational fault Possible causes Remedy
Impeller is unbalanced Re-balancing by a specialised
company
Impeller caked up Clean carefully,
re-balance if necessary
Material corrosion
on impeller caused by
conveying aggressive media
Consult the
manufacturer
Deformation of impeller because
temperature too high
Consult the
manufacturer
Install a new impeller
Check bearings
Fan runs irregularly
V-belt drive is not correctly lined
up Adjust belt drive
Normal wear and tear Exchange complete sets of
drive belts
Drive belt torn or damaged Drive belt is too strongly
tensioned Adjust belt drive
Wrong degree of tensioning Check belt tension and re-
tension if necessary
Drive belts slip Foreign objects or dirt in the
grooves or the pulleys
Clean the pulleys and check
drive belt profile
Leakage on the shaft bushing Seal is not suitable for the mode
of operation Consult the manufacturer
Sleeves are defective Replace sleeves
Leakage on the sleeves Tensioning straps are not
firmly tightened Tighten tensioning straps
Wrong rotational direction of the
impeller Change direction of rotation
Pressure loss in ducting too
high Different duct configuration
Flow dampers are not or only
partially opened
Check opening positions on the
spot
Fan output too low
Inlet or delivery duct
blocked Remove obstacles
Electrical control mechanisms
are wrongly adjusted
Check adjustment of the motor
protective device and if
necessary re-adjust
Motor winding is defective Please consult manufacturer
Fan does not reach its rated
speed
Drive motor is not correctly
dimensioned
Please consult manufacturer for
the purpose of checking starting
torque
Grating noises during operation
of the fan or when it runs down
Inlet duct is installed in a
distorted way
Remove inlet duct and re-mount
it
Temperature rise of the roller
bearings Bearing was not lubricated
Change bearing and lubricate
regularly according to
maintenance instructions

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 16
13 Retrofittable original accessories
If not already a part of our delivery, these original parts are available ex-stock for further ordering.
- Frequency converters
- Elastic sleeves
- Vibration dampers
- Condensate drains
- Engine cover for outdoor installations
- Splinter protection
- Wall console
Part 2: Components
14 Design and function CHVS / CHVK
All impellers of this series are balanced out to better than Q6.3 according to VDI 2060.
The casing with its thermoplastic rear panel is screwed onto the support base and can be easily dismantled
for inspection or cleaning purposes.
The fans are available in 2 standard designs:
Direct drive:
V-belt drive:
As a basic principle, plastics fans are to be installed on the intake side in order to avoid leakage.

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 17
15 Dimension
15.1 Dimension of the CHVS / CHVK with direct drive
CHVS 63 90 125 160 200 250 CHVK 63 90 125 160
A 309 317 327 338 351 361 A 234 242 252 262
B 275 281 289 298 307 318 B 200 206 214 222.5
C 311 323 339 356 375 395 C 236 248 264 280
D 307 311 315 320 327 327 D 232 236 240 244
E 630 630 630 630 630 630 E 450 450 450 450
F 400 400 400 400 400 400 F 315 315 315 315
G 545 545 545 545 545 545 G 390 390 390 390
H 615 615 615 615 615 615 H 452 452 452 452
I Ø 120 150 185 220 260 310 I Ø 120 150 185 220
K Ø 63 90 125 160 200 250 K Ø 63 90 125 160
L Ø 12 12 12 12 12 12 L Ø 12 12 12 12
M 30 30 30 30 30 30 M 30 30 30 30
N 335 335 335 335 335 335 N 285 285 285 285
O 110 110 110 110 110 110 O 73 73 73 73
P 325 325 325 325 325 325 P 275 275 275 275
Q 59 62 65.5 69.5 73.5 80 Q 58 61 64.5 68.5
R 180 180 180 180 180 180 R 140 140 140 140

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 18
15.2 Dimension of the CHVS / CHVK with V-belt drive
CHVS 63 90 125 160 200 250 CHVK 63 90 125 160
A 309 317 327 338 351 361 A 234 242 252 262
B 275 281 289 298 307 318 B 200 206 214 222.5
C 311 323 339 356 375 395 C 236 248 264 280
D 307 311 315 320 327 327 D 232 236 240 244
E 630 630 630 630 630 630 E 450 450 450 450
F 400 400 400 400 400 400 F 315 315 315 315
G 545 545 545 545 545 545 G 390 390 390 390
H LG/RD 0 615 615 615 615 615 615 H 452 452 452 452
I Ø 120 150 185 220 260 310 I Ø 120 150 185 220
K 63 90 125 160 200 250 K Ø 63 90 125 160
L 12 12 12 12 12 12 L Ø 12 12 12 12
M 30 30 30 30 30 30 M 30 30 30 30
N 335 335 335 335 335 335 N 285 285 285 285
O 394 394 394 394 394 394 O 270 270 270 270
P 325 325 325 325 325 325 P 275 275 275 275
Q 59 62 65.5 69.5 73.5 80 Q 58 61 64.5 68.5
R Ø 180 180 180 180 180 180 R 140 140 140 140

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 19
16 Assembly instructions
16.1 Assembly instructions for CHVS / CHVK with direct drive
1. Bolt motor bracket together and attach motor
2. Mount back plate and impeller
3. Install casing
Dismantle in the same way but in reverse order

COLASIT AG
Plastic construction
CH-3700 Spiez
Phone [phone] Fax [phone]
Editione 2010 / Subject of alteration
Copyright by COLASIT AG Spiez
Page 20
16.2 Assembly instructions for CHVS / CHVK with V-belt drive
1. Install flanged bearings and reinforcement plates
2. Bolt motor bracket together and attach motor
3. Install V-belt drive. Tension drive belts. Mount back
plate and impeller
4. Install casing and V-belt protection
Dismantle in the same way but in reverse order