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oof fan installation
egulating roof fan speed
Depending on the model, the speed of a roof fan motor may be con-
trolled either by adjusting an internal switch in the fan or by changing
the motor supply voltage using a suitable control device. The rotation
speed of the ECo-roof fan motor can be controlled using 0–10 VDC
voltage control or PWM. E-series roof fan can be controlled using
100-230 VAC. VILPE Oy may impose restrictions on the use or type of
control device.
Safety instructions
•
oof fan installations must not impede safe servicing.
• Safe access to the roof fan must be guaranteed, for example with the
help of a roof ladder.
• The roof fan mounting must ensure that it is not possible to touch
moving parts.
• Only an authorised and adequately qualified electrician may install the
electrical connections.
• The power supply must always be entirely disconnected during servic-
ing and repair work.
• Detach the motor element of the special wall switch from its coun-
terpart (do not pull by the cord) and place the guard over the switch.
With a FLOW roof fan, simply turn o the safety switch.
• Ensure that the fan blades have stopped rotating before opening the
fan housing.
• Exercise caution when detaching the motor element.
• The motor element is entirely detached when the special plug switch
is o and the sliding locks are in the open position.
• Damaged components must always be replaced with original spare
parts.
Main electricity supply
A connecting box must be fitted between the flexible connecting cable
and the fixed mounting. Fixed installations must include a mains supply
decoupling device (e.g. a switch with a contact clearance of not less
than 3 mm for all poles). FLOW roof fans do not require an external
decoupling device. The junction box must include an appropriate
strain-relief fitting for the flexible cord. The fan has a built-in overheat
protection with automatic reset.
Points to check before commissioning:
• The electrical connection has been installed.
• There are no foreign bodies in the fan.
When turning on the appliance, verify that:
• The measured values do not exceed the values specified on the fan
power rating plate. The rated current may not be exceeded by more
than 5 per cent at the rated voltage. The maximum permitted voltage
under IEC 60038 is between +6 % and -10 %.
• No unusual sounds come from the fan in operation.
Troubleshooting
Always begin by disconnecting the power supply according to the safety instructions.
Fault
Check that
Fan not turning
• power supply disconnector switch is on
• the impeller is turning freely
• impeller has not been allowed to freeze (NB! Fan intended for continuous operation during cold weather season.)
• capacitor is working (requires authorised electrician)
Fan operation is noisy
• impeller is clean and undamaged – any imbalance will cause vibration in the ducts.
• impeller is free of foreign materials e.g. pieces of thermal insulation remaining in the ducts at the time of construction.
Water in ventilation
• ventilation ducts passing through cold loft spaces are thermally insulated over their entire length, providing two 5 cm thick insulation
duct
layers carefully fitted with overlapping seams. No vapour barrier may be fitted over the insulation
• ventilation has operated continuously, as the temperature of the insulation layer and ducts may not fall below the dew point.
• a small air opening has been made in the back draught damper of the stove hood duct, or complete closure of the back draught damper
is mechanically impeded. This enables a small amount of air to flow in the duct, which also prevents the fan from freezing.
• roof fan was not turned o too soon after cooking, leaving a great deal of steam and hot air in the ducts. The steam will condense in the
ducts and on the fan motor. When the fan is next used the frozen condensate will melt and flow along the ducts and onto the stove. The
fan should be kept running for as long as possible after cooking, enabling the ducts to dry out properly. The best way to prevent conden-
sation is to keep the fan running continuously at low power.
• any condensate collecting container in the stove hood or fan is not full.
Contact appliance vendor when necessary in case of fault.
Operating and servicing
instructions
estrictions on use
oof fans may not be used in transport systems for powdery materials, or for hot, explo-
sive or corrosive gases.
oof fans and exhaust ventilation ducts may not be used at temperatures other than those
separately specified in the associated roof fan and exhaust ventilation duct brochure (see
www.vilpe.com for further details).
The relative humidity of the air must not continually exceed 90 per cent when using roof
fans and exhaust ventilation ducts. Exhaust ventilation ducts are intended solely for air
extraction and must not be used as air input appliances. Condensation must be drained
away carefully when using exhaust ventilation ducts for extracting moist air to ensure that
moisture does not damage other structural elements.
Annual servicing
• Clean away any surface dirt from the product.
• Check the condition and fastenings of all screws and tighten or replace as required.
• Check the condition of pass-through seals and replace as required.
• Check that there are no cracks in plastic parts.
• Check the fastenings and condition of protective snow barriers.
• Check the condition of roof underlay insulation adjacent to roof fans and exhaust
ventilation ducts.
• Clear winter snow and ice from products and their surroundings where necessary.
emoval of dirt and debris
•
emove debris as necessary without using scouring or abrasive implements.
• Clean soiled surfaces using a rag moistened with mild detergent solution. Consult
manufacturer to ensure the suitability of detergents.
• Clear contamination from ventilation ducts using a suitable appliance.
• Comply with servicing instructions when servicing the electrical components of roof
fans.
Any resurfacing of products will void the VILPE® warranty.
Servicing of roof fan electrical components
Always turn o the power supply in accordance with safety instructions before opening
the fan housing.
The fan must be cleaned and inspected as required, and at least annually. Failure to do this
may result in an imbalance and consequent bearing failure. The fan bearings are enclosed,
permanently lubricated and require no maintenance. Damaged parts must be replaced
with original VILPE® spare parts. Special attention must be paid to the strain relief device
when replacing the cable. The entire fan must be replaced in the event of any damage
to an impeller. The junction box must be opened to replace the safety switch, capacitor,
fan or connection cord. After replacement, it must be ensured that the seals have been
replaced and are in place and that the cover of the junction box is sealed in a watertight
manner.
The FLOW roof fan includes an integrated safety switch.
Compliance
The VILPE® roof fan complies with the EMC, LVD, and depending on model, oHS
requirements. For more information, see: www.vilpe.com/compliance
Warranty terms
www.vilpe.com/warranty
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