Table of Contents
Advertisement
Quick Links
EXPERT IN ENGINEERED
VACUUM SYSTEMS SINCE 1993
Performance. Reliability. Efficiency.
333 Rt 46 W
Building A,
Fairfield, NJ 07004
Do not operate PUMP before primed and connected to the constant supply of clean compressant Liquid. IF RUN
DRY, PUMP WILL BE DAMAGED; always use a strainer to prevent sand and scale from entering the pump with
liquid sealant.
Specific operating conditions combined with water hardness may result in excessive lime deposits inside the pump,
causing it to bind. Should this condition be evident, flush the pump with a solvent at regular intervals.
This pump has been drained and flushed with water-soluble preservative oil before shipment. After the pump has
been in service, do not store without draining as specified in this manual. The freezing of the preservative oil can
damage the pump.
USE CAUTION when removing inlet screens. Any foreign material on the screen may fall into the pump and cause
extensive damage at start-up.
The base must be mounted to a leveled foundation, and final coupling alignment is done during installation.
(Refer to manual No.XXX, Installation Instructions, N.E.S. Company Vacuum Pumps and Compressors.)
SERVICE AND PARTS
SERVICE AND PARTS FOR NES VACUUM PUMPS ARE ASSURED THROUGH A WORLDWIDE
NETWORK OF SALES AND SERVICE OFFICES LISTED ON THE BACK COVER OF THIS MANUAL.
ANY REQUEST FOR INFORMATION, SERVICE, AND PARTS SHOULD BE DIRECTED TO THE
NEAREST NES SITE / FIELD OFFICE.
WHEN ORDERING REPLACEMENT AND SPARE PARTS, SERIAL NUMBERS AND PUMP SIZES
NBE O & M Document No. NES/NBE/O&M
of 43
1-800-297-3550
www.nescompany.com
Operation &
Maintenance Manual
for NBE Series
Vacuum Pumps &
Compressors
WARNING
NOTICE
N
E
S
C
O
M
P
A
N
Y
Page 1
Advertisement
Table of Contents
Summary of Contents for NES NBE Series
- Page 1 NOTICE SERVICE AND PARTS SERVICE AND PARTS FOR NES VACUUM PUMPS ARE ASSURED THROUGH A WORLDWIDE NETWORK OF SALES AND SERVICE OFFICES LISTED ON THE BACK COVER OF THIS MANUAL. ANY REQUEST FOR INFORMATION, SERVICE, AND PARTS SHOULD BE DIRECTED TO THE NEAREST NES SITE / FIELD OFFICE.
- Page 2 WARRANTY NES Company warrants that (1) the goods will be of the kind described on its acceptance of Buyer's order as modified by any subsequent mutual agreement of the parties, (2) it will convey to Buyer good title to such goods, (3) such goods will be delivered...
-
Page 3: Table Of Contents
5.3. Draining and Flushing......................12 5.4 Preliminary Inspection......................13 5.5 Start-up and Operating Checks....................15 Troubleshooting 6.1 Detecting Troubles.........................18 Preventive Maintenance 7.1 Periodic Maintenance......................22 7.2 Six-Month Intervals.......................24 7.3 Twelve-Month Intervals......................24 7.4 Bearing Lubrication ......................24 NBE O & M Document No. NES/NBE/O&M Page 3 of 43... - Page 4 8.3 Pump Inspection ……………………...…………………………………………………..31 Technical data for NBE3 & NBE4 9.1 Spare Parts Lists ………………………………………………………………………….32 9.2 Dimensions and Specifications ………………………………………………………….35 9.3 Forces and torques on Flanges …………………………………………………………..36 9.4 Circuit Diagrams ………………………………………………………………………..37 NBE O & M Document No. NES/NBE/O&M Page 4 of 43...
-
Page 5: Safety Precautions
9. Always close the valve between the vacuum vessel Operation, and maintenance information for your and the pump before shutting off the pump to NES NBE series of vacuum pumps. Please read the prevent vacuum oil from being drawn into the system. complete document carefully before operating your 10. -
Page 6: Principle Of Operation
NBE1-152 to in this series operate to 23” Hg. For more details, NBE4-7000. The increasing number indicates please refer to the NES NBE Series Data Sheet, pump increasing suction capacity. The single stage NBE drawings, and performance curves. -
Page 7: Installation
Always refer to the motor nameplate to confirm the the freight carrier and NES Company Inc. It is motor horsepower and voltage, ensuring it matches important to note that NES does not take the electrical power source. - Page 8 These steps ensure a proper commissioning process Keep inspection covers on the end shields closed. for the machine. Please refer to Table 1 for types of mechanical shaft seals required for different NBE pump models. NBE O & M Document No. NES/NBE/O&M Page 8 of 43...
-
Page 9: Liquid Compressant (Seal Water)
This can be achieved by employing 5…9 appropriate shaft sealing methods, such as mechanical seals Table 1: Types of mechanical shaft seals with external supply, to ensure the integrity of the system. NBE O & M Document No. NES/NBE/O&M Page 9 of 43... - Page 10 ± 10 %) Type 2 NBE3/4 … 2.7 PSIG 5.6 PSIG 8.5 PSIG 11.4 PSIG 14.3 PSIG 17.2 PSIG 20.1 PSIG 23.0 PSIG Table 2: Operating Liquid Flow rate NBE O & M Document No. NES/NBE/O&M Page 10 of 43...
- Page 11 Operation of the liquid ring machine. The 5. Managing calcium content and lime deposits: If the operating liquid plays a critical role in maintaining operating liquid has a high calcium content, there is a NBE O & M Document No. NES/NBE/O&M Page 11 of 43...
-
Page 12: Draining And Flushing
In normal • Reinstall the plug in its original position. cooling, a portion of the operating liquid that is discharged from the machine is recirculated back into NBE O & M Document No. NES/NBE/O&M Page 12 of 43... -
Page 13: Preliminary Inspection
It is recommended to There is a risk of slipping and falling due to escaping have authorized personnel from NES Service conduct Liquid. When draining the machine, it is essential to the decalcification process. NES also recommends... - Page 14 Verify that the pump and system have adequate arrow on the pump body and is illustrated in the priming, and then activate all main water supply installation drawing. sources to the pump or heat exchanger. NBE O & M Document No. NES/NBE/O&M Page 14 of 43...
-
Page 15: Start-Up And Operating Checks
Caution: if there is abnormal bearing noise, vibration, assistance during the commissioning process, it is odor, or smoke, shut down the pump immediately and advisable to contact the NES support or service determine the cause. department for guidance. vi) Inspect the pump for vibration and noise. Excessive... - Page 16 Potential well as the potential for hair and clothing to be issues may include a loose foundation, improper forcefully pulled in. alignment, insufficient sealing fluid, NBE O & M Document No. NES/NBE/O&M Page 16 of 43...
- Page 17 2. For different types of shaft seals, follow the closures (plugs, covers) on the connections in the end corresponding steps: shield. ❖ For stuffing boxes with internal liquid supply, no special measures are needed. NBE O & M Document No. NES/NBE/O&M Page 17 of 43...
-
Page 18: Troubleshooting
Might be bearing making noises Need to change the bearings There is leakage of Liquid between the housings Solutions: Possible causes The sealant may be damaged Replace the sealant NBE O & M Document No. NES/NBE/O&M Page 18 of 43... - Page 19 If the separator is placed too high, reposition it to a lower level. Operating liquid quantities may be too high: Adjust the operating liquid quantities to an appropriate level NBE O & M Document No. NES/NBE/O&M Page 19 of 43...
- Page 20 Insufficient seal liquid flow The volumetric flow of the operating liquid should be increased. Raise the supply pressure or adjust the volumetric flow of the operating Liquid NBE O & M Document No. NES/NBE/O&M Page 20 of 43...
- Page 21 Check the bearings and follow the specified lubrication instruction Rusty bearing Change the bearing and examine the seals Bearing scoring Solutions: Possible causes There is wear on the bearing running surfaces Change the bearing NBE O & M Document No. NES/NBE/O&M Page 21 of 43...
-
Page 22: Preventive Maintenance
By conducting the first general inspection and worsening of operating noises should be investigated addressing any identified issues, the machine can be and addressed promptly. maintained in optimal condition for continued 5. Foundation: reliable Operation. NBE O & M Document No. NES/NBE/O&M Page 22 of 43... - Page 23 For all activities related to inspection, overhaul, and repairs, it is highly recommended to seek the services of NES Service. They have the expertise and experience to effectively handle these tasks and ensure the optimal functioning of the machine.
-
Page 24: Six-Month Intervals
Ensure that the orifice plug in the body, specifically the 3/8-inch All models of the NBE series are supplied with a re- orifice of the lobe unloader, is not obstructed. To lubricating device. To track the lubrication intervals, check this: we recommend maintaining an inspection log. - Page 25 Unirex N2 or Unirex EP2 Mobil Oil Mobilith SHC 100 or Mobilith AW2 Shell Oil Alvania 2 or Alvania EP2 Texaco Oil Starplex 2 or Marfak MP2 Thames Lithium EP2 NBE O & M Document No. NES/NBE/O&M Page 25 of 43...
- Page 26 Fig. 2. Bearing insert on drive side NBE3 Fig. 3. Bearing insert on drive side NBE4 NBE O & M Document No. NES/NBE/O&M Page 26 of 43...
- Page 27 Fig. 4. Bearing insert on non-drive side NBE3 Fig. 5. Bearing insert on non-drive side NBE4 NBE O & M Document No. NES/NBE/O&M Page 27 of 43...
-
Page 28: Stuffing Box Packing
90 degrees. Take care not to disrupt and Table 4. the distribution of the seal water in the packing. To replace the packing in the stuffing box, follow 3. It is recommended to have NES Service perform the these steps: packing replacement and adjustment. TYPE NBE3/4…... - Page 29 Figure 6. Removing of stuffing box packing Figure 7: Stuffing of box packing NBE O & M Document No. NES/NBE/O&M Page 29 of 43...
-
Page 30: Shutdown Periods
NBE3/NBE4 62 which is a waterborne vapor phase corrosion NBE3/NBE4 67 inhibitor, flushing before start-up is not required for NBE3/NBE4 72 pumps preserved with this material. Table 5: Preservative Quantity NBE O & M Document No. NES/NBE/O&M Page 30 of 43... -
Page 31: Disassembly, Reassembly, And Inspection
When it comes to inspection, maintenance and inspection intervals can be planned based on relubrication or grease change intervals, provided that no shorter periods are specified after the first inspection. NBE O & M Document No. NES/NBE/O&M Page 31 of 43... -
Page 32: Technical Data For Nbe3 & Nbe4
40.10 **) Blind flange Allen head (inlet side, outside bottom) 22.07 Sealing 40.12 **) Blind flange 50.06 Bearing cover, compound for (discharge side, non-driving installation top) side, outside 22.08 NBE O & M Document No. NES/NBE/O&M Page 32 of 43... - Page 33 30.14 ²) Pipe plug 40.22 Plug for shaft 50.25 Sealing seal, with compound for internal installation sealant supply 35.01 *) Housing 50.28 Plug (removal of the without/with partition 50.29 V-ring NBE O & M Document No. NES/NBE/O&M Page 33 of 43...
- Page 34 Figure 8: Vacuum pump NBE3/4 NBE O & M Document No. NES/NBE/O&M Page 34 of 43...
-
Page 35: Dimensions And Specifications
2⅜ Weighs/Masses Mass/Weight in short tons (1 sh tn = 2000 lbs.) Type NBE3/4 … Without accessories 10.0 12.6 15.7 With separator and Y- 10.1 11.2 14.0 17.3 pipe NBE O & M Document No. NES/NBE/O&M Page 35 of 43... -
Page 36: Forces And Torques On Flanges
Flange 4 F in lbs. 1280 1280 1685 2045 2045 Mв in ft lbs. 1900 3690 3835 5825 8480 8480 Mт in ft lbs. 1845 4865 5090 7375 11100 11100 NBE O & M Document No. NES/NBE/O&M Page 36 of 43... -
Page 37: Circuit Diagrams
B30 Liquid separator Discharge pipe E30 Discharge pipe for seepage (assembled) separated liquid of shaft seal C10 Inlet pipe operating Liquid C11 Shut-off fitting D50 Discharge pipe for draining NBE O & M Document No. NES/NBE/O&M Page 37 of 43... - Page 38 It is essential that the liquid level in the operating liquid tank and the overflow level are aligned precisely with the shaft center of the machine. NBE O & M Document No. NES/NBE/O&M Page 38 of 43...
- Page 39 (assembled) B40 Operating-liquid feed tank E14 Volume flow meter Discharge pipe C10 Inlet pipe E30 Discharge pipe for seepage separated C11 Shut-off fitting operating Liquid liquid of shaft seal NBE O & M Document No. NES/NBE/O&M Page 39 of 43...
- Page 40 Figure 15: Connection for several machines with shared liquid tank The liquid level inside the operating-liquid feed tank (B40) should be maintained at a maximum level equal to the shaft center. NBE O & M Document No. NES/NBE/O&M Page 40 of 43...
- Page 41 A46 Funnel or sight glass Compressor separated A21 Line for partial draining B30 Liquid separator operating Liquid D40 Discharge pipe for excess Shut-off fittings (for (assembled) B40 Operating-liquid feed tank ensuring operating Liquid NBE O & M Document No. NES/NBE/O&M Page 41 of 43...
- Page 42 9.4.2 Examples of circuit diagrams of compressors Figure 17: Diagram with discharge connection at top Figure 18: Diagram with discharge connection at bottom NBE O & M Document No. NES/NBE/O&M Page 42 of 43...
- Page 43 Figure 19: Connection with self-regulating operating-liquid circuit NBE O & M Document No. NES/NBE/O&M Page 43 of 43...