NVE Challenger Series Owner's Manual
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NVE Challenger Series Owner's Manual

Tri-lobe blower
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National Vacuum Equipment, Inc.
National Vacuum Equipment, Inc.
National Vacuum Equipment, Inc.
Owner's Manual
B250 Tri-Lobe Blower
MADE IN THE USA
Designed. Built. Supported in the USA.
800-253-5500
www.natvac.com
|

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Summary of Contents for NVE Challenger Series

  • Page 1 National Vacuum Equipment, Inc. National Vacuum Equipment, Inc. National Vacuum Equipment, Inc. Owner’s Manual B250 Tri-Lobe Blower MADE IN THE USA Designed. Built. Supported in the USA. 800-253-5500 www.natvac.com...
  • Page 2 © 2020 National Vacuum Equipment, Inc. Revision: 1 (Release) January 2020 No part of this manual may be reproduced without the written permission of National Vacuum Equipment, Inc. Weights and measurements are www.natvac.com | 800.253.5500 2 | B250 Challenger Series for reference only.

  • Page 3: Table Of Contents

    Diesel Engine Precautions ............20 Direct Coupler Installation & Alignment ........21 Hydraulic Drive ................21 Plumbing and Piping ..............22 Recommended Accessories ............. 22 Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 3 for reference only.
  • Page 4 Change Sump Gear Oil ..............37 Approximate Oil Capacities ............39 Blower Dimensions Diagram ............40 Blower Parts Diagram ..............41 Blower Parts List ................42 Weights and measurements are www.natvac.com | 800.253.5500 4 | B250 Challenger Series for reference only.

  • Page 5: Introduction

    Today, NVE has full service machine, fabrication and powder- coating shops complete with CNC-controlled production equipment designed for close tolerance work. The company has a highly trained staff, all of whom are dedicated to quality.

  • Page 6: Limited Warranty

    National Vacuum Equipment, Inc. 9. Certain products provided by National Vacuum Equipment, Inc. are covered by their respective manufacturers’ warranties (e.g., engines used in the NVE engine drive packages). These products are not covered by the National Vacuum Equipment, Inc. Manufacturers’ Warranty.

  • Page 7: Warranty Procedures

    • Product must be returned to NVE intact for inspection before warranty will be honored. • Product must be returned to NVE freight prepaid in the most economical way. • Credit will be issued for material found to be defective upon our inspection, based upon prices at the time of purchase.
  • Page 8 National Vacuum Equipment considers safety an essential component in the use of its products. There is no replacement for proper training of personnel who will be in contact with NVE products. This manual should be thoroughly read and understood prior to installing, operating, maintaining, or servicing the NVE product documented herein.
  • Page 9 Indicates a hazardous situation which can cause damage to machine, personal property, and/or the environment, or cause the equipment to operate improperly. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 9 for reference only.

  • Page 10: Safety Precautions

    Safety Precautions It is vitally important that safety considerations be implemented in the operation and service of this and other NVE products. While outlining every safety precaution is beyond the scope of this manual, some of the most important precautions include the following: It is the installer’s and end user’s...

  • Page 11: B250 Tri-Lobe Blower

    Each NVE B250 blower will have a stainless-steel blower tag bolted to the non-drive endplate of the blower as shown in the figure to the right. This serial number should be proportional to the pressure referenced in any contact with NVE regarding the unit.

  • Page 12: Specifications

    SPECIFICATIONS Operating Environment NVE B250 blowers are designed to move atmospheric air. Do NOT use this blower to move explosive, toxic, or corrosive gases or operate the blower in an area with explosive gases. Contamination in the intake air must be filtered and/or separated from the air by means of an intake filter, moisture trap and/or a cyclonic filter.

  • Page 13: Performance

    14.6 16.4 18.4 20.5 21.6 20.2 29.1 40.9 Performance of your NVE B250 blower may deviate from the aforementioned data for numerous reasons. These reasons include things such as: ambient temperature, oil condition, bearing condition, cleanliness of the media being pumped, etc.

  • Page 14: Rotation And Airflow

    B250 INTAKE PORT INTAKE PORT EXHAUST PORT INTAKE INTAKE PORT EXHAUST PORT PORT SHOWN IN VACUUM MODE EXHAUST PORT Weights and measurements are www.natvac.com | 800.253.5500 14 | B250 Challenger Series for reference only.

  • Page 15: Handling

    In the event damage has occurred, first file a claim with the carrier and then contact NVE for assistance. Do NOT use lift points on the blower to pick up blower packages.

  • Page 16: Preservation

    400ºF. Drain oil prior to putting unit in service. Dispose of used rust preventative oil according to local and EPA regulations in an environmentally friendly manner. Weights and measurements are www.natvac.com | 800.253.5500 16 | B250 Challenger Series for reference only.

  • Page 17: Limitations Of Use

    Damage to, and potential Remove misalignment & Operation of drive with seizure of, the blower. replace wearing components excessive misalignment. in drive system. Ejection of parts possible. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 17 for reference only.

  • Page 18: Installation Considerations

    Any B250 blower package should be mounted to the frame of the truck in a sufficient manner. Truck manufacturers’ should be consulted for proper mounting. NVE cannot take responsibility for the mounting of any NVE product. The exhaust discharge of the blower silencer should be considered in the installation of the package.

  • Page 19: Belt Drive System

    Regularly check all bushing fasteners for proper torque, especially after initial run in or after any belt drive service. A belted drive specialist should be consulted for design review of a belted drive system incorporating NVE components. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 19 for reference only.

  • Page 20: Drive Shaft System

    RPMs. Diesel engines at low RPMs are capable of producing damaging torque pulses that can cause rotor lobe contact and/or accelerated wear of bearings and gear components. Weights and measurements are www.natvac.com | 800.253.5500 20 | B250 Challenger Series for reference only.

  • Page 21: Direct Coupler Installation & Alignment

    RPMs, and possible blower lobe contact. With increased regulation in regards to diesel engines, NVE strongly recommends consulting a diesel engine specialist to assist in the design of a diesel driven system using NVE components. Ensure diesel engine exhaust is not increasing the intake and/ or ambient air conditions of, or around, the blower.

  • Page 22: Hydraulic Drive

    The B250 can be driven with an appropriated sized, and matched, hydraulic system utilizing a motor with an SAE A two-bolt or SAE B two or four bolt face. NVE offers B250 packages with both of these hydraulic adapters. It is the installer’s responsibility to design the hydraulic system, including the hydraulic motor and associated couplers, to connect to the blower.

  • Page 23: Plumbing And Piping

    Exhaust Silencer Positive displacement blowers are inherently noisy due to their design. NVE offers compatible silencers for the exhaust system of the B250 blower to reduce decibel levels in the operating environment. If using a non-OEM silencer, it should be tested...

  • Page 24: Intake Filter

    Maintain an air gap around the exhaust silencer and associated plumbing. Intake Filter NVE offers an intake filter manifold for the B250 blower. It includes a stainless steel mesh type filter that is designed to maximize efficiency and keep unwanted, and potentially damaging, debris from being ingested into the pumping chamber.

  • Page 25: Inlet Check Valve

    A primary shutoff is to be used with the blower as a first line of defense to prevent liquid from entering the blower. It is critical that an appropriately sized primary shutoff is used. Contact NVE for assistance with selecting the shutoff.

  • Page 26: Initial Start Up

    Operators must wear PPE including, but not limited to, eye and hearing protection as noises levels can exceed 85 dB. Weights and measurements are www.natvac.com | 800.253.5500 26 | B250 Challenger Series for reference only.

  • Page 27: Operating The Blower

    Do NOT keep vacuum and/or pressure on the blower system while disengaged. Do NOT transport the system with vacuum and/or pressure present. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 27 for reference only.

  • Page 28: Cold Weather Operating

    If temperatures are so cold that the blower cannot warm up, enclose the blower allowing for sufficient clearance from parts to prevent contact with hot or moving components. Weights and measurements are www.natvac.com | 800.253.5500 28 | B250 Challenger Series for reference only.

  • Page 29: Maintenance

    Most systems that include NVE components have rotating members that can cause entanglement, injury, and/or death. Many NVE components also obtain high levels of temperature during, and for a period after, operation. The entire system must be allowed to cool below 100°F before beginning any service procedure.

  • Page 30: Four-Way Valve Adjustment

    *A valve that is too loose may allow the valve to “creep” while the blower is running and may allow air leaks from the exhaust to intake side of the blower – both undesirable conditions. Weights and measurements are www.natvac.com | 800.253.5500 30 | B250 Challenger Series for reference only.

  • Page 31: Relief Valve Setting Instructions

    Step #4: Fix the setting by using the rings “C” that are situated on the body and the spring-tightener. Only properly trained personnel should service systems containing NVE components. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 31 for reference only.

  • Page 32: Vacuum Relief Valve

    Vacuum relief valves should only be adjusted and/or serviced by trained individuals. Vacuum relief valves are NOT factory set by NVE. They must be properly set at time of install. NVE assumes no responsibility of quantity and/or setting of any vacuum relief valves on any associated system.

  • Page 33: Maintenance Schedule

    Four-Way Valve Vacuum <1 in Hg Filter Clogging Oil Change- Initial Right Angle Gearbox Oil Change- Normal Moisture Blower Trap/Sec- Drain Fluid ondary Driveline Inspection Couplers Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 33 for reference only.

  • Page 34: Clean Out Procedure If Flooded

    Rebuilding Rebuilding is beyond the scope of this owner’s manual and should be performed only by trained technicians. Consult an authorized distributor or NVE to arrange rebuilding of the blower. Weights and measurements are www.natvac.com | 800.253.5500 34 | B250 Challenger Series...

  • Page 35: Maintenance Notes

    Maintenance Notes Date Comments Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 35 for reference only.

  • Page 36: Troubleshooting

    (Follow safety guidelines). Verify inlet temperature is Inlet temperature out of specification. within specification and adjust accordingly. Bearings worn. Rebuild blower. Weights and measurements are www.natvac.com | 800.253.5500 36 | B250 Challenger Series for reference only.
  • Page 37 Grease the four-way valve and adjust as difficult to move. necessary. AG Rotors fell out of time. Rebuild blower. Rotor and endplate are Rebuild blower. contacting. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 37 for reference only.

  • Page 38: Change Sump Gear Oil

    Do not overfill the blower sump, a slight air gap should be visible at the top of the sight eye (“F”). *See page 39 for proper gear oil. (See Figure #3) Weights and measurements are www.natvac.com | 800.253.5500 38 | B250 Challenger Series for reference only.
  • Page 39 Do not overfill the blower sump, a slight air gap should be visible at the top of the sight eye (“F”). (See Figure #6) *See page 40 for proper gear oil. Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 39 for reference only.

  • Page 40: Approximate Oil Capacities

    Total (oz.) B250 12.5 *Amounts are approximate and should be used as reference only. Use sight-eyes! Dispose of used oil according to local and EPA regulations. Weights and measurements are www.natvac.com | 800.253.5500 40 | B250 Challenger Series for reference only.

  • Page 41: Blower Dimensions Diagram

    19 11/16" 5/16" KEY 10 15/16" 2" FNPT 2 1/2" 20 15/16" 16 1/16" 12 7/8" 1" 5" CLEARANCE HOLE 8" 5/8" BOLT 3 11/16" Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 41 for reference only.
  • Page 42 Notes Weights and measurements are www.natvac.com | 800.253.5500 42 | B250 Challenger Series for reference only.
  • Page 43 Notes Weights and measurements are www.natvac.com | 800.253.5500 B250 Challenger Series | 43 for reference only.
  • Page 44 National Vacuum Equipment, Inc. National Vacuum Equipment, Inc. P.O. Box 685 Traverse City, MI 49685 USA 231.941.0215 Phone 231.941.2354 Fax sales@natvac.com www.natvac.com 800.253.5500 National Vacuum Equipment, Inc.

This manual is also suitable for:

B250

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