Initial Commissioning; Cleaning And Maintenance; Information - Fault Causes - Helios MultiVent MV EC Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
CHAPTER 4
COMMISSIONING
CHAPTER 5
CLEANING AND
MAINTENANCE
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WARNING
CHAPTER 6
FAULT CAUSES
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MultiVent MV EC..
If a residual current device is installed in the supply line of the EC fan, the residual current device must have the follo-
wing technical features:
Type A or B with a rated differential current of 30 mA.
The EC fan has a leakage current of <= 3.5 mA, calculated according to DIN EN 50178 image 4.
4.0

Initial commissioning

The following checks are to be carried out before the initial commissioning:
– Check for operation according to the intended purpose of the fan!
– Check if installation and electrical connection is carried out professionally
– Check if fan is securely mounted
– Check all parts, especially screws, nuts and safety guards for tight fit
– Check if safety equipment is mounted professionally
– Accessories (flexible connectors, strap etc..) mounted professionally
– Protection against accidental contact
– Remove assembly residuals and foreign parts from the ventilation room
– Check free movement of impeller! Test unhindered running of the impeller. Commissioning may only take place when
protection against accidental contact with the impeller is ensured.
– Check sealing of the connection cable and tight clamp of the cable wires
– Check if cable gland is tight
– Does the connection data agree with the data on fan rating plate
– If the fan is installed deeper than 2.3 m above the ground and the supply or extract air ducts are relatively short, sui
table guards must be mounted to prevent direct contact with the impellers.
⇒ The fan must run smoothly at each speed.
– Commissioning:
5.0

Cleaning and maintenance

All commissioning and maintenance work must be carried out by trained and qualified personnel in conside-
ration of all relevant regulations and directives!
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Make sure before maintenance and service work that the unit is isolated from the mains and is secured
against restarting with an isolator switch!
– Impeller must stand still
– Clean unit only with a damp cloth
– Excessive deposit of dirt, dust, grease and other materials on the impeller, motor and between casing and impeller is
to be avoided and has to be prevented by periodical cleaning.
– For maintenance purposes inspection doors and access openings must be provided in the duct system in a suitable
place.
– The motors have maintenance-free, long lasting, greased ball bearings.
If the fan is used for important functions servicing is necessary at least every 6 months, in case of standstill
for a longer period of time it must be serviced before re-commissioning.
6.0 Information – Fault causes
The triggering of the integrated electronic temperature monitoring system can be caused by:
– the build-up of dirt, stiffness of impeller and/or ball bearing failure
– air flow temperature too high
– electronic error
Abnormal noises can be caused by
– worn out ball bearings
– lack of vibration decoupling to other buildings and ducting systems
Vibrations and oscillation can be caused by:
– unbalanced or dirty impellers
– lack of vibration decoupling to other buildings and ducting systems
Extreme reductions in performance can occur
– if resistance to air stream through ducting and accessories (grilles, shutters, filters etc.) is higher than planned.
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