Nash Elmo 2BH7 2 Series Operating Instructions Manual Download

Page: 1 / 23

Order No.: 610.44436.40.000
Edition 09/2003
English

Phone:

+49 911 1454 5268

Fax:

+49 911 1454 5252

E-mail:

[email protected]

Internet:

www.nash-elmo.com

Gas-Ring Vacuum
Pumps/Compressors

Operating

Instructions

Series G_400

Models

2BH7 2

2BH7 3

2BH7 4

2BH7 5

2BH7 6

Single-impeller model

(single-stage)

Two-impeller model

(two-stage)

Three-impeller model

(three-stage)

Summary of Contents for 2BH7 2 Series

Page 1: ...on 09 2003 English Phone 49 911 1454 5268 Fax 49 911 1454 5252 E mail service nash elmo com Internet www nash elmo com Gas Ring Vacuum Pumps Compressors Operating Instructions Series G_400 Models 2BH7 2 2BH7 3 2BH7 4 2BH7 5 2BH7 6 Single impeller model single stage Two impeller model two stage Three impeller model three stage ...

Page 2: ...allation 12 5 2 Electrical connection motor 14 5 3 Connecting pipes hoses vacuum pump compressor 16 5 3 1 Inlet connection 17 5 3 2 Discharge connection 17 5 3 3 Procedure when connecting pipes hoses 17 6 Commissioning 17 6 1 Preparation 18 6 2 Start up and shut down 19 7 Operation 19 8 Shut Down and Longer Standstills 20 8 1 Preparing for shut down or longer standstill 20 8 2 Storage conditions 2...

Page 3: ...uld result in death or serious injury if the corresponding measures are not taken CAUTION Danger of injuries Indicates a potentially hazardous situation that may result in minor or moderate injury if the corresponding measures are not taken CAUTION Danger of damage Indicates a potentially hazardous situation that may result in property damage if the corresponding measures are not taken NOTICE Indi...

Page 4: ...ing parts external fan impeller shaft Cutting cutting off of extremities Grasping winding up of hair and clothing Danger due to vacuum and gauge pressure sudden escape of fluids skin and eye injuries sudden drawing in of hair and clothing Danger due to escaping fluid Burns Start up and operation only under the following conditions The pump motor unit must be completely assembled When doing so pay ...

Page 5: ...3 Residual risks WARNING Danger zone Hot surface up to approx 160 C 320 F Hazard Possible burns Protective measures Cover the pump motor unit with a suitable touch protection e g perforated plate cover or wire cover WARNING Danger zone Fan guard Hazard Long loose hair can be drawn into external fan through fan guard grate even with fan guard mounted Protective measures Wear hair net WARNING Danger...

Page 6: ...st in the following designs single impeller single stage two impeller two stage three impeller three stage Increased pressure differences can be achieved with the two impeller and three impeller pump motor units are intended for industrial applications are primarily intended for higher pressure conditions are designed for continuous operation With increased switch on frequency at equal intervals o...

Page 7: ...BH75 approx 52 approx 2 05 2BH76 approx 53 approx 2 09 Minimum distance to vacuum pump compressor cover Minimum distance to face of vacuum pump compressor cover mm inches 30 1 18 Vibrations The following table provides information on the maximum permissible loading due to vibrations Vibration value Vibration frequency ranges Hz 6 3 6 3 63 63 Vibration path S mm 0 16 S inches 0 006 Vibration veloci...

Page 8: ...approx 142 2BH7310 0 2 approx 86 approx 187 2BH7410 0 1 approx 101 approx 214 2BH7510 0 1 approx 111 approx 232 2BH7510 0 2 approx 112 approx 234 2BH7610 0 1 approx 124 approx 255 2BH7610 0 3 approx 124 approx 255 Two impeller design at a frequency of 50 Hz Model Temperature increase T K ϑ F 2BH7220 0 2 approx 55 approx 131 2BH7220 0 5 approx 74 approx 165 2BH7320 0 5 approx 81 approx 178 2BH7420 ...

Page 9: ...5 3 4 2 21 2 95 M20x1 5 4 5 2 95 3 69 M32x1 5 M40x1 5 5 7 3 69 5 16 3 2 Electrical data See rating plate 3 3 Operating conditions Temperatures max permissible temperature 40 C 104 F Nominal value 15 C 59 F Temperature of Pump motor units for higher fluid temperatures on request max permissible temperature 40 C 104 F min permissible temperature 30 C 22 F Nominal value 25 C 77 F Ambient temperature ...

Page 10: ...hoes and protective helmet during transport WARNING Danger from tipping or falling loads Prior to transport and handling make sure that all components are securely assembled and secure or remove all components the fasteners of which have been loosened Manual handling WARNING Danger from lifting heavy loads Manual handling of the unit is only permitted within the following limits max 30 kg max 66 l...

Page 11: ...electrical device cannot be damaged by external influences In particular the feed pipes must be securely routed e g in cable ducts in the floor etc WARNING Danger from balance damage caused by vibration Vibrating environments can cause balance damage Install the pump motor unit on a solid foundation or on a solid mounting surface Check screw glands unions for mounting the pump motor unit on the mo...

Page 12: ... differs from the following specifications it is necessary to inquire with the Service Department Ambient conditions The pump motor unit is suitable for installation in the following environments In a dusty or damp environment in buildings in the open When properly installed in the open the pump motor unit must be protected from exposure to intensive sunlight e g by attaching a protective roof Oth...

Page 13: ... the pump motor unit the following variants are possible with a different axis position horizontal or vertical Horizontal installation Vertical installation on the vacuum pump compressor cover cover installation Vertical mounting on the wall Basically all variants are possible with all models However a distinction must be made between a design with and a design without a condensed water opening fo...

Page 14: ...ound and short circuit Cover or block off adjacent energized parts CAUTION Incorrect connection of the motor can lead to serious damage to the unit Regulations The electrical connection must be carried out as follows according to the applicable national and local laws and regulations according to the applicable system dependent prescriptions and requirements according to the applicable regulations...

Page 15: ...e protective conductor the outer ground conductor Both conductors can be recognized from their color green yellow DANGER Electrical danger The terminal box must be free from foreign bodies dirt humidity Terminal box cover and cable entries must be tightly closed so as to make them dustproof and waterproof Check for tightness at regular intervals DANGER Electrical danger Clearance between bare live...

Page 16: ...ed reasons and must be mounted by the operator Fig 3 2BH722 2BH762 two impeller pump motor units with two stage design Fig 4 2BH723 2BH763 three impeller pump motor units with three stage design WARNING Danger from rotating impeller Cutting cutting off of extremities The rotating impeller is accessible with the inlet and discharge connections open With free entry and exit of gases i e with direct ...

Page 17: ... the related muffler Fig 1 Pg 2 Item 3 is marked with an arrow pointing into the vacuum pump compressor Connect the inlet pipe here The pumped gases are sucked in via this Procedure see Chapter 5 3 3 WARNING Danger from solid bodies and impurities in the pump motor unit If solid bodies penetrate into the pump motor unit blades of the impellers can break and broken pieces can be thrown out Install ...

Page 18: ... again after a longer standstill Measure the insulation resistance of the motor With values 1 kΩ per volt of nominal voltage the winding must be dried Measures before start up If a shut off device is installed in the discharge pipe Make sure that the unit is NOT operated with the shut off device closed Before starting up the pump motor unit observe the values specified on the rating plate Specific...

Page 19: ... piping attach an additional muffler 6 2 Start up and shut down Start up Open shut off device in intake discharge pipe Switch on power supply for drive motor Shut down Switch off power supply for drive motor Close shut off device in intake discharge pipe 7 Operation WARNING Improper use of the unit can result in serious or even fatal injuries Have you read the safety precautions in Chapter 1 Safet...

Page 20: ...ent must provide the following conditions dry dust free low vibration effective value of vibration speed veff 2 8 mm s 0 11 sec Ambient temperature max 40 C 104 F CAUTION Danger of overheating due to high temperature When storing in an environment with a temperature of over 40 C 104 F the winding may be damaged and the grease change interval may be shortened Lubrication of rolling bearings after l...

Page 21: ...eck or correct impeller gap setting if necessary Service Impeller defective Replace impeller Service Motor does not start humming noise Rolling bearing on drive motor side or vacuum pump compressor side defective Replace motor bearing or vacuum pump compressor bearing Service Winding short circuit Have winding checked Electrician Reduce throttling Service Motor overloaded Throttling does not match...

Page 22: ...he procedure described in Chapter 9 3 Decontamination and Declaration of Clearance Pg 22 must be used The original rating plate of the pump motor unit must be properly mounted intact and legible All warranty claims are voided for pump motor units delivered for a damage expertise without the original rating plate or with a destroyed original rating plate In case of warranty claims the manufacturer ...

Page 23: ...nery Part 1 Principles and specifications for machinery manufacturers DIN EN 1012 1 Compressors and vacuum pumps Safety requirements Part 1 Compressors DIN EN 1012 2 Compressors and vacuum pumps Safety requirements Part 2 Vacuum pumps EN ISO 11688 1 Acoustics Recommended practice for the design of low noise machinery and equipment Part 1 Planning ISO TR 11688 1 1995 DIN EN 60034 Rotating electrica...

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