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Installation and Operating Instructions
ATTENTION
WARNING
n m
CAUTION
EC axial high-performance fans HQ.. EC / HRF.. EC / HW.. EC
Error/fault
Abnormal noises
Power consumption
too high
Fan does not perform
(speed)
4.3
Spare parts
Only original Helios spare parts are to be used.
Repairs may only be carried out by authorised specialist personnel/companies.
4.4
Standstill and disposal
The safety instructions specified in Chapter 1, section 1.2 must be observed!
The EC fan must be (all poles) disconnected from the mains power supply before disassembly!
– With regard to shipping, the instructions in section 1.5 must be observed, and with regard to disassembly, the
instructions in section 3.1 must be observed.
– Parts and components of the EC fan, whose service life has expired, e.g. due to wear and tear, corrosion, mechanical
load, fatigue and/or other effects that cannot be directly discerned, must be disposed of expertly and properly after
disassembly in accordance with the national and international laws and regulations. ~The same also applies to
auxiliary materials in use. Such as oils and greases or other substances. The intended and unintended further use of
worn parts, e.g. impellers, rolling bearings, filters, etc. can result in danger to persons, the environment as well as
machines and systems.
The corresponding operator guidelines applicable on-site must be observed and used!
Causes
Incorrect operating point
Grinding impeller
Bearing damage
Mechanical damage
Incorrect operating point
Grinding impeller
Bearing damage
Incorrect operating point
Incorrect voltage
Controller set up incorrectly
Bearing damage
Contamination
Insufficient backflow
13
Troubleshooting
Check suitability of EC fan, Check/keep
inflow and outflow clear
Clean, replace if necessary
Replace motor
Carry out maintenance
Check suitability of EC fan, Check/keep in-
flow and outflow clear
Clean, replace if necessary
Replace motor
Check suitability of EC fan, Check/keep in-
flow and outflow clear
Check/change connection
Contact Helios customer service team
Replace motor
Clean
Enlarge backflow openings
E
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