ELTA CFHT560 Clearflow Roof Fan Instruction Manual
- May 15, 2024
- elta
Table of Contents
CLEARFLOW CFHT
Installation & Maintenance
Installation Instructions
1.0 General
1.1 It is important these Installation and Maintenance Instructions are fully
adhered to.
1.2 Full details of the unit supplied are shown on the product nameplate. If
in doubt about any detail contact Elta Ltd or its agents for clarification.
1.3 All electrical installation must be carried out by suitably qualified and
competent personnel in accordance with all current statutory requirements.
1.4 These instructions cover only the Elta Ltd product and do not include the
supply or installation of any safety equipment that may be required e.g.
adequate guarding or protection from rotating parts and proper electrical
isolation.
1.5 Any declarations made by Elta Ltd about product installation and safety,
are dependant on the fan equipment being used within installations which
themselves meet the requirements of the relevant Standards and Directives of
your region.
1.6 The fan is designed for use in an ambient temperature of -20°C up to a
maximum of +50°C (refer to the relevant table) and up to 95% relative
humidity. The fan is not suitable for corrosive or explosive atmospheres.
1.7 The installer should provide easy access to the fan to facilitate future
maintenance.
1.8 The installer should ensure the fan is adequately supported.
1.9 This product is not intended for use by persons (including children) with
reduced physical, sensory or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or instruction concerning
use of the product by a person responsible or their safety. Children should
be supervised to ensure that they do not play with the product.
1.10 At end-of-life, the unit must be disposed of in an environmentally
friendly manner by suitably qualified and competent personnel in accordance
with the requirements of applicable Standards and Directives.
2.0 Installation
WARNING – The fan must be isolated from the power supply during installation
and maintenance. The fan must be earthed in accordance with the local
regulations.
2.1 Upon receipt, the fan equipment should be visually inspected to check for
any damage. Ensure that the impeller is free to rotate.
2.2 If there are any queries concerning the fan equipment, Elta Ltd should be
contacted prior to the installation.
2.3 The fan must be securely mounted in the desired position to suit the
application. The fan can be mounted on flat or inclined roofs with a maximum
pitch angle of 15°.
2.4 Position the assembled roof fan unit onto the curb and secure to the
timber sill with M10 coach bolts (not supplied by Elta), ensuring that fibre
washers are positioned under each bolt head. It is advisable to drill pilot
holes prior to fitting the bolts to prevent splitting the timber curb.
2.5 Check the details on the motor rating plate to ensure that the correct
power supply (voltage, frequency and phase) is available.
An incorrect power supply will lead to permanent damage to the fan motor.
2.6 Refer to the appropriate wiring diagram. Ensure that all earth connections
are made.
2.7 Means for electrical disconnection must be incorporated in the wiring
installation in accordance with the relevant wiring and electrical
regulations.
2.8 Precaution must be taken to locate the exhaust discharge terminal so as to
avoid the backflow of gases into the room from the open flue of gas or other
fuel burning appliances.
3.0 Start Up
3.1 Before power is supplied to the unit, check that the wiring is correct as
per the fan connection diagram.
3.2 At initial start-up, check that impeller rotation and airflow direction is
correct.
3.3 Check that the motor amperage draw does not exceed the nameplate rating.
4.0 Fan Maintenance
4.1 Inspection of the fan at least once every 12 months is recommended to
ensure that the motor, fan blades, and supporting guards, are clean. Any build
up of dust and deposits on the blades or guards should be removed using a non-
abrasive cleaner.
4.2 All fastenings should be checked for tightness. In addition, all rotating
items should be checked.
4.3 Bearings are of the ‘sealed for life’ type and will not need a detailed
inspection.
WARNING – Fuses/circuit breakers are used to provide short circuit
protection only. A starter panel with overload protection should be used to
protect the motor.
Once the motor cools down the fan may start unexpectedly.
Only a suitably qualified and competent person may carry out maintenance after
the electrical supply has been isolated.
Table 1: Operational Maintenance
| Activity | Frequency |
|---|---|
| Inspect AV mounts for Corrosion or “Sag” | 6 months |
| Check earth bonding | 6 months |
Dampers check rubber stops and grease (lithium based) pivot points, by
removing plastic caps| Yearly
Check fixings tightness and conditions of brass track and rivets| 26,000 hours
/ 3 years
Inspect and clean impeller| 26,000 hours / 3 years
Remove dirt from motor cooling fins| 26,000 hours / 3 years
Check operation of anti-condensation heaters| 26,000 hours / 3 years
Check for even tip clearance between impeller and casing – For ATEX 10% of
motor shaft diameter with 2mm minimum and 13mm maximum.|
26,000 hours / 3 years
Check motor Amps| 26,000 hours / 3 years
Any corrosion – treat with suitable chemicals| 26,000 hours / 3 years
Check casing seals| 26,000 hours / 3 years
Table 2: Terminal Box Maintenance
| Activity | Frequency |
|---|---|
| Check that lid seal is in place and not damaged | Each time the enclosure is |
opened
Check that lid fixing screws are in place and secured| Each time the enclosure
is closed
Check that the mounting bolts are tight and free from corrosion| Annually
Check security of all cable glands| Annually
Check that all screw clamps terminals are secure| Annually and each time
enclosure is opened
Check enclosure for damage| Annually
5.0 Storage
5.1 If the fan is not to be used immediately then it should be stored in a
clean, dry, vibration free and lockable location.
5.2 The impeller must be spun by hand (ensuring that it does not come to rest
in the same position) on a monthly basis to prevent hardening of the grease
and possible damage to the bearings.
5.3 All items to be stored on pallets that afford adequate protection from
damage, dust and high humidity.
5.4 If storage periods of longer than 1 month are anticipated then Elta (or
their Agent) should be contacted prior to storage taking place, to ensure the
storage area provisions will not be detrimental to the well being of Elta
products.
6.0 Guarantee
Elta Ltd will, free of charge, within a period of 1 year from the date of
dispatch from their works, repair or at its option replace any goods which are
proved to have defects as a result of defective materials or workmanship. The
goods MUST be returned to Elta Ltd carriage paid for examination.
Wiring Diagrams
Please use the table(s) below to match up the product code and the wiring diagram number.
Three Phase 380V – 415V / 50Hz
| Page No. | Product Code | Wiring Diagram No. |
|---|---|---|
| 5 | CFHT350/4-3AC | 152-600 |
| 5 | CFHT400/4-3AC | 152-600 |
| 5 | CFHT450/4-3AC | 152-600 |
| 5 | CFHT500/4-3AC | 152-600 |
| 5 | CFHT560/4-3AC | 152-600 |
| 5 | CFHT630/4-3AC | 152-601 |
All wiring and control equipment must comply to the latest IEE regulations, in
particular part 552-01-02/03.
MK-152-600 Issue B: 29.04.2015
Check the individual product accessories table for fan controller
compatibility.
Notes
Elta Limited has a policy of continuous product development and improvement
and therefore reserves the right to supply products which may differ from
those illustrated and described in this publication.
Confirmation of dimensions and data will be supplied on request.
Tel +44 (0) 1384 275800
Email [email protected]
eltafans.com
535-IOM0036 Issue B
