Nash Elmo G 400 Series Operating Instructions Manual Download Page 10

 
 

 

 

 

nash_elmo Industries GmbH 

10 / 23 

 

Order No.: 610.44436.40.000 

Subject to change 

 

 

Edition 09/2003 

 

Transport and Handling

Permissible 
total pressure 
difference:  

The total pressure difference 
specified on the rating plate 
only applies under the following 
conditions: 
 

• 

Ambient temperature: 
25 °C [77 °F].  
 

• 

Inlet temperature  
(temperature of pumped 
gases at inlet connection): 
15 °C [59 °F]. 
 

• 

Pressure: 
 
during vacuum-pump 
operation: 
1,013 mbar [14.7 psia] at 
discharge connection; 
 
during compressor 
operation: 
1,013 mbar [14.7 psia] at 
inlet connection; 

 
At an ambient temperature of 
40 °C [104 °F] the total 
pressure difference specified on 
the rating plate must be 
reduced by 10%.  
If the ambient temperature is 
between 25 °C [77 °F] and 
40 °C [104 °F], then the total 
pressure difference specified on 
the rating plate must be 
reduced linearly to the 
temperature by between 0 and 
10 %.  
 

 
 

Installation altitude 

Max. of 1,000 m [3,280 ft] above sea level.  
 
When installing the pump-motor unit at an 
altitude of more than 1,000 m [3,280 ft] above 
sea level, first inquire with the Service 
department. 
 
 

4  Transport and Handling 

 

  WARNING 

Tipping or falling can lead to crushing, 
broken bones etc.! 
Sharp edges can cause cuts! 

Wear personal safety equipment (gloves, 
safety shoes 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 lbs] for men 

• 

max. 10 kg [max. 22 lbs] for women 

• 

max. 5 kg [max. 11 lbs] for pregnant women

For the weight of the pump-motor unit, see 
Chapter 3.1, "Mechanical data", 
Section "Weight", Pg. 7. 
For weights above the given values use 
suitable lifting appliances and handling 
equipment! 

 

 

Handling by means of lifting equipment: 

 

  WARNING 

Danger from tipping or falling loads! 

When transporting with lifting equipment, 
observe the following basic rules: 

• 

The lifting capacity of lifting equipment and 
lifting gear must be at least equal to the 
unit's weight. 
For the weight of the pump-motor unit, see 
Chapter 3.1, "Mechanical data", 
Section "Weight", Pg. 7. 

• 

The pump-motor unit must be secured so 
that it cannot tip or fall. 

• 

Do not stand or walk under suspended 
loads! 

 

 
 
The transport must be carried out in different 
ways depending on the model:  

• 

Models 2BH72., 2BH73., 2BH74. [single-
impeller] and 2BH75. [single-impeller]: 
Manual handling 

• 

Models 2BH74. [two-impeller], 2BH75. [two-
impeller] and 2BH76.: 
Transport with crane, hooked onto eye bolt 
(1 attachment point) 

 

Summary of Contents for G 400 Series

Page 1: ...n 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...

Page 2: ...llation 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 1...

Page 3: ...ld 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 t...

Page 4: ...ng 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 s...

Page 5: ...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...

Page 6: ...t 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 m...

Page 7: ...H75 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 followi...

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...

Page 9: ...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...

Page 10: ...oes 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 co...

Page 11: ...lectrical 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 vibratio...

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...

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 in...

Page 14: ...und 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...

Page 15: ...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 humidit...

Page 16: ...d 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 WARNIN...

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 W...

Page 18: ...again after a longer standstill Measure the insulation resistance of the motor With values 1 k per volt of nominal voltage the winding must be dried Measures before start up If a shut off device is in...

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...

Page 20: ...nt 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 h...

Page 21: ...ck 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 sid...

Page 22: ...e 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 wa...

Page 23: ...ery 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...

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