systemair PRF Centrifugal Fan Instruction Manual
- June 4, 2024
- systemair
Table of Contents
systemair PRF Centrifugal Fan
GENERAL INFORMATION
HAZARD WARNINGS
Never put your hands, or any other part of your body, into the fan casing.
Never remove, take off, modify or in any other way interfere with the
protective devices.
LIMITATIONS OF USE
The fan has been designed and built to transport air in the presence of
corrosive gas/vapours at temperatures between -150 and +/0C. Ihe concentration
limits for transporting corrosive substances are given below
WARNING:
THE PRODUCTS IN THIS MANUAL ARE NOT SUITABLE FOR USE IN POTENTIALLY EXPLOSIVE
(ATEX) ENVIRONMENTS. FOR USE IN POTENTIALLY EXPLOSIVE (ATEX) ENVIRONMENTS,
ATEX CERTIFIED FANS OF A SUITABLE CATEGORY FOR THE ZONE CLASSIFIED SHOULD BE
PURCHASED FROM SYSTEMAIR GMBH.
Important : The following list has been made to the best of our knowledge and is a recommendation only. The examination of the media to be transported is under the responsibility of the system operator. We do not recommend to select material combinations with a “0” in properties. The standard casing is manufactured from PE, the standard impeller is manufactured from PP. The material of the impeller is the indicator for the selection.
+ Resistant Not resistant 0 Partially resistant
+Resistant – Not resistant O Partially resistant
+Resistant – Not resistant O Partially resistant
DESCRIPTION OF ACCESSORIES
The following accessories are available for the fan on request
- Anti vibration joints: reduce vibration which could be transmitted to the ventilation ducts.
- Shock absorbers: reduce vibration which could be transmitted to the fan base
- Butterfly valves: regulate the airflow in the ducts.
- Ducts: used to connect the fan to the system.
- Condensation plug: discharges condensation forming inside the casing.
- Bends and reductions: join stretches of ductwork together.
DESCRIPTION OF SAFETY DEVICES
The fan has no active safety devices because it is designed to be part of a system which regulates its power supply and function.
ENVIRONMENTAL LIMITS
The fan may be installed in an environment at a temperature of between 20C°
and +40C° at an altitude of no more than 1000 metres above sea level.
POSSIBLE HAZARDS
- The fan must be transported as it is, without dismantling or removing any of its parts; it is therefore heavy and may have sharp protuberances.
- The fan must be thoroughly cleaned prior to transportation in order to ensure that while it is being lifted no detritus will fall out of or off it.
RECOMMENDED PRECAUTIONS
WARNING : always wear adequate protective clothing.
WARNING: follow all the instructions given in this chapter.
WARNING: verify that the weightlifting equipment used can bear the
declared weight in the enclosed catalogue.
****Do not approach the fan under any circumstances until it is resting on
the ground and the weightlifting equipment is inactive.
INSTALLATION
INSTALLING THE FAN
REQUIRED LEVEL OF EXPERTISE
Basic understanding of masonry and skills.
RECOMMENDED PRECAUTIONS
- WARNING : follow the steps illustrated in this section accurately.
- WARNING : always wear adequate protective clothing.
- WARNING : always employ a qualified electrician to install the electrical components and wiring.
- WARNING: before wiring the fan ensure that the impeller is beyond the reach of people’s arms. If it is not install a protection grill and connect it to the supply and exhaust ducts.
PROCEDURE
- Transport the packaged fan to its installation location, remove packaging.
- Identify the anchoring screws exact position using the fan.
- Drill the necessary holes.
- Align the fan housing’s drilled holes with those on the base.
- Fix the structure to the base using pressure plugs or bolts depending on whether the base is in iron or cement. Install shock absorbers if available.
- Connect the supply and exhaust ducts.
- Install fixed protection barriers in order to render the fan inaccessible under normal operating conditions.
- If available install the condensation drain plug at the base of the casing to drain condensation. Organise a system to channel and collect condensation.
- Install protection grills to avoid contact with the fan.
WIRING TO THE MAINS
This should be carried out once the fan is in the final position; the
qualified electrician doing the wiring shall follow the instructions in the
technical electrical documentation enclosed in the terminal block of the
electric motor.
Operation with speed controllers
The admissible type of speed controller can be taken from the documentation.
We recommend to use the Systemair range RTRE and RTRD, in case speed control
by transformer is chosen. All motors which are speed controllable by reduction
of voltage are equipped with motor protection by thermal contacts. Three phase
motors shown as speed controllable can be operated with frequency inverters.
The frequency inverter has to be equipped with an all pole sine filter
(earth/earth and earth/phase). Three phase motors shown as single speed motors
can be operated with standard frequency inverters. All single speed three
phase motors are equipped with a cold conductor for motor protection.
Warranty
The Systemair warranty covers the complete unit and only those components
supplied by Systemair. Components which have been added at site and have a
negative influence on the fan invalidate the warranty for the complete fan.
Systemair reserves the right in case of a warranty claim to have the
concentrations of chemicals being verified by an independent third party
surveyor.
MAINTENANCE
REQUIRED LEVEL OF EXPERTISE
PREVENTIVE MEASURES
- WARNING : Place several visible “maintenance” placards around the area.
- WARNING: Wear protective gloves which are adequate to deal with the presence of gas/vapours and any deposits.
- WARNING: Wear adequate protective clothing.
- WARNING: Follow the instructions contained in the present manual.
- WARNING: In order to see the internal part of the casing better use a portable auxiliary lamp with a protected light bulb.
- WARNING: Before carrying out maintenance ensure that the electrical supply to the fan has been interrupted and secured against re-starting.
PROCEDURE
The following tables show:
- Maintenance description.
- Level of expertise required.
- Maintenance schedule.
WARNING : This operation may only be carried out by personnel authorised by the manufacturer.
REPAIRS
REQUIRED LEVEL OF EXPERTISE
PREVENTIVE MEASURES
WARING: place several visible “REPAIRS” placards around the area before
carrying out repairs.
WARNING: wear adequate protective clothing.
PROCEDURE
The following table shows:
- A description of the problem – the commonest malfunction symptoms
- Possible causes of damage;
- Proposed solutions;
- Who should intervene.
SPARE PARTS TABLE
- MOTOR
- MOTOR SUPPORT
- DISK MOTOR SUPPORT
- WHEEL
- OGIVE
- VOLUTE MOULDED
CLEANING
REQUIRED LEVEL OF EXPERTISE
Expert worker with machinery experience and safety training.
HAZARD WARNING
The only risks which may occur come from not following the instructions
contained in the manual or not wearing adequate safety clothing.
PREVENTIVE MEASURES
- Turn off the electric power supply.
- Drain off condensation in the hood.
RECOMMENDED PRODUCTS
Use compressed air alone if the fan is used to transport air in the presence
of gas/vapours which do not contain suspended particles.
If the fan is used in an environment with vapours from special chemical
substances consult the chemicals safety data sheets to see which cleaning
products they recommend.
PROCEDURE
- Stop the fan and cut the electrical power supply off.
- Access the casing by dismantling it as described in section assembly and dismantling.
- Clean the parts of the casing and the impeller using compressed air or the specific products recommended for air in the presence of gas/vapours.
- Reassemble the casing as described in section assembly and dismantling.
- Restart the fan if necessary.
DISMANTLING
HAZARD WARNINGS
Mainly due to the fact that some parts of the fan are heavy.
PARTS, ELEMENTS, AND SUBSTANCES THAT REQUIRE SPECIAL PROCEDURES
- All fan parts should be correctly disposed of.
- Each part, component or group of components should be grouped together by type.
- Procedures and equipment used must conform to legislation current at the time of dismantling.
ASSEMBLY AND DISMANTLING
REQUIRED LEVEL OF EXPERTISE
The operations described in the present section are referred to in several
other sections of the manual. The level of expertise required is specified at
the beginning of each appropriate reference section.
RECOMMENDED PRECAUTIONS
WARNING: follow the instructions detailed in this section.
WARNING: wear adequate protective clothing.
PROCEDURE
DISMANTLING
- Turn the fan off and cut off the electrical power supply.
- Detach the fans inlet and outlet ducts.
- Unscrew the bolts which anchor the casing to the base structure and place the casing on the ground.
- Unscrew the bolt which anchors the impeller to the electric motor shaft.
- Remove the impeller and place it on the ground.
- Unscrew the bolts which anchor the electric motor and place the motor on the ground.
ASSEMBLY
- Screw in the bolts that anchor the electric motor
- Assemble the impeller on the electric motor shaft.
- Screw in the bolts that anchor the impeller to the electric motor shaft.
- Screw in the bolts that anchor the casing to the base structure.
- Attach the fans inlet and outlet ducts.
REMOVAL FROM COMMISSION
REQUIRED LEVEL OF EXPERTISE
Basic understanding of masonry and skills, with a copy of this section of the
manual authorised by their employer who guarantees their correct training.
RECOMMENDED PRECAUTIONS
WARNING: follow the instructions detailed in this section.
WARNING: wear adequate protective clothing.
PROCEDURE
- Turn the fan off.
- Detach the electrical power supply lines from the motor.
- Cover the metal parts with a light coat of oil to prevent oxidization.
- Cover the fan with a nylon dust sheet.
Get In Touch
Call : 0845 688012
Email : info@adremit.co.uk
Our Address
Puravent, Adremit Limited, Unit 5a, Commercial Yard, Settle, North Yorkshire,
BD24 9RH
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