Greenheck Vektor-MH, Installation, Operation And Maintenance Manual

Page 1: ...d If the fan RPM is changed the motor current should be checked to make sure it is not exceeding the motor nameplate amps 5 Do not allow the power cable to kink or come in contact with oil grease hot surfaces or chemicals Replace cord immediately if damaged 6 Verify that the power source is compatible with the equipment 7 Never open access doors to a duct while the fan is running DANGER Always dis...

Page 2: ...inuity of the surfaces Wipe clean thoroughly with Tectyl 506 Ashland Inc or the equivalent For hard to reach internal surfaces or for occasional use consider using Tectyl 511M Rust Preventive or WD 40 or the equivalent Receiving Vektor MH Vektor MD and Vektor MS fans are thoroughly inspected test run at the factory and shipped on a skid or packaged to minimize damage during shipment Warranty perio...

Page 3: ...perating weight of the unit and have adequate structural stiffness to inhibit structural resonance in the roof and supporting structure The supporting structural elements should be designed such that the first natural frequency is a minimum of 120 of the maximum operating speed of the fan and accounts for the inertia from the rotating fan rotor mass Weak or undersized structural soundness may impac...

Page 4: ...its share similar system components and assembly configuration Blower Housing High Plume Nozzle Bypass Air Plenum Roof Curb or Structural Support Bypass Damper Actuator Access Door Weatherhood with Birdscreen Isolation Damper Blower Housing Access Door Access Panel Bolted Gasketed all sides Isolation Damper Actuator Cover Motor Cover Access Weatherhood with Birdscreen Panel Lifting Points Isolation...

Page 5: ...em components and assembly configuration Bypass Damper Actuator Access Door Weatherhood with Birdscreen Isolation Damper Blower Housing Access Door Access Panel Bolted Gasketed all sides Isolation Damper Actuator Cover Panel Lifting Points Blower Housing VGN Nozzle Bypass Air Plenum Roof Curb or Structural Support ...

Page 6: ...inch 82 5 mm spacing minimum Minimum 6 inch 152 4 mm weld on each corner OR Install 5 16 inch 7 9375 mm 24 Dril Flex Self Drilling Tapping Screws 3 16 inch 4 7625 mm minimum thread engagement into A36 steel centered in flange 4 5 inch 114 3 mm spacing 5 8 inch 15 875 mm minimum edge distance ALL HARDWARE BY OTHERS Greenheck Roof Curb CONCRETE STRUCTURAL SUPPORT BY OTHERS SEE NOTE ABOVE Install 3 8 ...

Page 7: ...e allowances for lower on site lifting capacities Plenum sections are joined using stainless steel fasteners These are removed to separate sections for lifting purposes Save hardware as these will be required to join the BAP sections together again If moving separate sections onto a roof curb or support structure each section should be joined to its mating section after moving into position and be...

Page 8: ...L lifting points on each component must be utilized at the same time Fan to be kept level during lifting and installation CAUTION Fans should never be lifted by the shaft motor motor cover or accessories Vektor MD sizes 40 and greater Vektor MH and MS all sizes Vektor MD sizes 36 and smaller Securing the Bypass Air Plenum After bypass air plenum BAP has been lifted into position plenum should be s...

Page 9: ...equire weatherhoods to be delivered separate from the BAP The weatherhood bolt hole pattern matches the side panel bolt pattern Use supplied hardware to secure the weatherhood to the BAP over the bypass air damper Nozzle Lifting and Installation for Vektor MH Using the nozzle lifting points place nozzle over blower discharge aligning support bracket holes with bolt holes in blower housing Attach n...

Page 10: ...tched for fitting around roof curb and plenum cross support members Plenum Drainage Piping Trap Detail By Others There is a location for a pipe connection on each tubular fan housing and bypass air plenum Each drain may need to be connected to a drainage system to ensure proper disposal of any water or condensate that may occur Drain connections are 0 5 inch FNPT and 1 0 inch MNPT Installed piping ...

Page 11: ...um section The entire isolation damper assembly can be slid out through the opening All Vektor M systems are available with HCD isolation dampers to be utilized for low to high pressures Vektor M sizes 15 33 offer an additional option the VCD dampers for lower pressure systems To remove the VCD damper the actuator must first be removed from the front plate The HCD damper can be pulled out without r...

Page 12: ...lation damper refer to CAPS file selection Field Wiring Factory Wiring Three Phase with Variable Frequency Drives Layout LINE IN 208 230 460 575 volt three phase MOTOR DISCONNECT 208 230 460 575 volt Three phase VFD supplied and wired by others TRANSFORMER if required 208 230 460 575 volt single phase Transformers must be wired independent from VFD control 24 115 volt single phase isolation damper ...

Page 13: ... Check operation of isolation and bypass dampers if supplied for freedom of movement 10 Check all electrical connections for proper attachment 11 Check housing and ductwork if accessible for obstructions and foreign material that may damage the fan wheel 12 Fill drainage piping trap WARNING Disconnect and secure to the OFF position all electrical power to the fan prior to inspection or servicing F...

Page 14: ... to provide uniform drive loading Use a set of matched belts whenever possible Do not pry belts on or off the sheave Loosen belt tension until belts can be removed by simply lifting the belts off the sheaves After replacing belts ensure that slack in each belt is on the same side of the drive Belt dressing should never be used CAUTION When operating conditions of the fan are to be changed speed pr...

Page 15: ...using assists proper motor cooling Never wash down motor with high pressure spray Greasing of motors is only intended when fittings are provided Motors supplied with grease fittings should be greased in accordance with the manufacturer s recommendations When motor temperature does not exceed 104ºF 40ºC the grease should be replaced after 2000 hours of running time Fans have extended grease lines to ...

Page 16: ...ing damage and void the warranty 3 Align fan and motor sheaves with a straight edge or string and tighten 4 Place belts over sheaves Do not pry or force belts as this could result in damage to the cords in the belts 5 Adjust the tension until the belts appear snug Run the unit for a few minutes and allow the belts to set properly 6 With the fan off and disconnect locked out adjust the belt tension...

Page 17: ...sen bottom bearing Caulk seal may need to be broken around perimeter of flange housing and bottom support plate Use emery cloth to clean shaft and remove any burrs 5 Install second set of shaft collars flush with top of bottom support plate 6 Remove shaft collars on top support plate and finish removing bottom bearing 7 Install new bottom bearing in reverse of this procedure Remember to re install to...

Page 18: ...nd wrap round 4 2 Wind wrap flat 5 2 Frame bottom bar 6 2 Frame top bar 7 2 Frame weld 8 2 Blade weld 9 2 or 4 Actuator mount 10 4 Lifting point 11 2 or 4 Actuator cover 12 2 Blade seal right 13 6 Blade seal left 14 4 Flex backing 15 2 Vektor backing 16 2 or 4 Actuator 17 1 Electrical box 18 4 Bearing 19 4 Blade seal 20 2 Flex seal Quantity 2 for sizes 15 thru 24 Quantity 4 for sizes 27 thru 40 ...

Page 19: ...temperature altitude Adjust set point used to control BAP damper modulation Resize ductwork Clean filters coils Change fan speed High Motor Amp Draw Fan Check rotation of wheel Reduce fan speed Duct System Resize ductwork Check proper operation of isolation and bypass dampers Check filters and access doors Fan Doesn t Operate Electrical Supply Check fuses circuit breakers Check for switches turned o...

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