Page 1
Installation and operating manual GB/en Centrifugal fans REH; RZH; BVREH; BVRA Fire gas versions checked according to EN 12101-3 Read the instructions prior to performing any task!
Table of contents General............... 5 4.2.6 Additional equipment for centrifugal fans............22 1.1 About this manual........5 Transport, packaging and storage....24 1.2 Explanation..........5 1.3 Limitation of liability........6 5.1 Safety notes regarding transport....24 1.4 Copyright............. 6 5.2 Checking delivered goods......24 1.5 Replacement parts........
Page 4
Table of contents Index..............44 Appendix............46 A Commissioning report........47 B Maintenance report........49 C Tables............52 D Installation manuals........55 Centrifugal fans REH; RZH; BVREH; BVRA...
General Customer service Assembly, commissioning and maintenance of the fans Measurement, analysis and evaluation of all the data required for operation (e.g.: pressure, volume, sound, vibrations) Operational balancing Replacement parts service Individual advice and help placing orders ...
Safety Personnel requirements > Qualifications Safety 2.2 Personnel requirements 2.2.1 Qualifications This section provides an overview of all the important safety issues for the best possible protection of per- sonnel as well as for safe and fault-free operation. WARNING! Failure to comply with the instructions and safety notes listed in this manual can lead to serious hazards.
Safety Explosion protection 2.2.2 Unauthorised persons Claims of any type for damages resulting from incorrect use will not be accepted. The system owner is solely responsible for all damages WARNING! resulting from incorrect use. Danger for unauthorised persons! 2.4 Explosion protection Unauthorised persons who do not fulfil the require- ments specified here are usually not aware of the ATEX Product Directive 2014/34/EU (ATEX 95)
Safety Specific hazards 2.6 Specific hazards Moving components Electric current WARNING! Risk of injury due to moving components! DANGER! Moving components can cause serious injuries. Danger of death due to electric current! – Do not reach into or handle moving components Danger of electric shock! Do not touch any live com- during operation.
Safety Labelling Connect the emergency stop equipment in such a way that any hazardous situations for individuals and prop- erty are excluded in the event of the power supply being interrupted or the power supply being activated fol- lowing an interruption. The emergency stop equipment must be freely acces- sible at all times.
Page 15
Safety Labelling Fig. 4: Terminal box The (Fig. 4/1) “Danger of death due to electric current” symbol is attached to the terminal box. Centrifugal fans REH; RZH; BVREH; BVRA...
Technical data Noise emission values 3.2.3 Type REH-R 3.2.6 Type BVRA Fig. 11: Type BVRA Fig. 8: Type REH-R 3.3 Connection values The connection values are dependent on the type of 3.2.4 Type RZH electric motor that is installed (rating plate of electric Ä...
Technical data Operating modes > S9 speed-controlled operation 3.5 Operating conditions Type REH/RZH Data Value Unit Min./max. flow medium temperature -20/+60 °C Min./max. ambient temperature -20/+60 °C Max. operating time according to EN 60034-1 24 hrs/day Smoke extract None - Installation horizontal - Type BVREH/BVRA...
Technical data Rating plate CE marking of smoke exhaust fans (BV) Type Volume flow rate Speed Motor rating Total pressure increase Voltage (V) / frequency (Hz) The rating plate of the explosion-proof fan also includes the following information: Explosion protection mark ...
Parts and function Description of the sub-assembly > Additional equipment for centrifugal fan... The measuring point of the ring measuring line of the intake-side VME shaft must be connected to the VME connecting braked on the fan with a measuring hose. In general, the measuring hose for the VME shaft is prelaid to the fan.
Faults List of faults 8.2 List of faults Fault description Cause Remedy Personnel Fan does not start Motor connected incor- Check the connections Skilled qualified rectly electrician No power Check the power supply Skilled qualified electrician One or two live wires Check the power consumption Skilled qualified have failed...
Page 36
Faults List of faults Fault description Cause Remedy Personnel Change the frequency inverter parameter Air volume flow rate settings is incorrect The duct system pres- At which operating point is the fan running? Instructed person sure losses are higher Change the duct version; prevent turbulence than expected / calcu- using baffle plates.
Faults Commissioning once a fault has been rectified Fault description Cause Remedy Personnel Mechanical noises Belt protection not Fix the belt protection Instructed person attached correctly Contamination on the Clean the casing / impeller Instructed person casing or impeller Impeller is grinding Caused by a misaligned connection duct due Instructed person to deformation of the casing, for example.
Index Index Installation manuals........... 40 Belt drive............... 58 Accident..............14 REH – disassembly of the impeller....... 56 Actuator..............22 Removal/assembly of the complete rotor set - Additional equipment for axial fans......22 type RZH............... 57 Assembly Variant "8" - heavyweight bearing......60 Fan................
Commissioning report Commissioning report Building: Date: __ . __ . 20__ Fan type: Company number: Approval number CE-EN 12101-3 (BV only) Rating plate data Name Item Unit Volume flow rate Speed Density kg/m Motor type Motor no. Nominal voltage Nominal voltage Mains frequency Nominal power Motor speed...
Maintenance report Maintenance report Building: Date: __ . __ . 20__ Fan type: Company number: Approval number CE-EN 12101-3 (BV only) Measurements to be performed (according to VDI 2044, ISO 5802) Variable Unit Value measured by UBA Measuring device Supply voltage Operating current Volume flow rate Vibrations, axial...
Page 50
Maintenance report Maintenance report checklist Maintenance work Ventilation ATEX Smoke exhaust fan to be carried out in the relevant with VD with VD with moni- category standard +VME toring system To be carried out every six months by instructed personnel Fan is free of foreign matter (tools, ☐...
Page 51
Maintenance report Maintenance report checklist Maintenance work Ventilation ATEX Smoke exhaust fan to be carried out in the relevant with VD with VD with moni- category standard +VME toring system To be performed every 3 years by specialist personnel ☐ ☐...
Tables Tables Table of screw tightening torques Maximum tightening MA in Nm Strength category 10.9 12.9 Sliding friction coefficient m 0.10 0.15 0.20 0.10 0.15 0.20 0.10 0.15 0.20 1050 1250 1250 1500 µ = 0.10 very good surface, lubricated ...
Page 53
Tables Table of the fan rating groups According to ISO 14694 (2003), Chapter 8.4 Application Max. drive capacity [kW] Fan rating group Building ventilation ≤ 3.7 BV-2 > 3.7 BV-3 Hazardous gases ≤ 37 BV-3 > 37 BV-4 Impeller gap table for centrifugal fans Size Impeller gap (+ tolerance) in mm Immersion depth (+ tolerance) in mm...
Page 54
Tables Installation of the taper-lock clamping bushes - tightening torques Bush type Screw tightening torques in Nm 1008 1108 1210 1215 1310 1610 1615 2012 2517 3020 3030 3035 4040 4545 5050 Centrifugal fans REH; RZH; BVREH; BVRA...
Installation manuals Installation manuals D.1 Type REH – assembly/disassembly of the impeller.................. 56 D.2 Type RZH - removal/assembly of the complete rotor set................57 D.3 Belt drive..............................58 D.4 Bearing..............................59 D.4.1 Bearing variant "8" (heavyweight bearing)..................... 60 D.4.2 Bearing variant "9" (lightweight bearing)....................62 Centrifugal fans REH;...
Page 57
Installation manuals Type RZH - removal/assembly of the complete rotor set WARNING! Attention! The impeller and crankshaft must not be separated. Removal of nominal size 400-1000 De-energize the fan Remove the V-belt drive and belt protection box. Secure the rotor set against falling Disassembly of the bearing ( Ä...
Need help?
Do you have a question about the REH Series and is the answer not in the manual?
Questions and answers