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Defender 500  |  

9

www.natvac.com  |  800.253.5500

•  The pump must be installed so that it is easily accessible for  

inspection and maintenance�

•  The vacuum pump must be installed on a rigid base or stand� The 

drive can be by shaft, belts and pulley, or hydraulic motor�

•  The drive shaft must be mounted so that it does not create any 

axial thrust; the inclination of the shaft must not exceed 15 degrees 

(see fig. 2) 

 

 

 

 

 

 

 

 

 

 

 

•  When using belts and pulley, the pulley can be mounted directly on 

the rotor shaft on the larger diameter inboard portion of the shaft� 

The alignment between the pulley of the pump and the driving  

pulley must be thoroughly checked�  The tension must be adjusted 

so the belts flex for about 1/16

th

 between pulleys� 

 

 

 

 

•  The direction of rotation and RPM are marked on the front of the 

pump�

•  The direction of rotation required by your drive system should be 

determined prior to ordering the pump�  

Drive System ______________________________________________________

Direction of Rotation ___________________________________________

7

4. Installation

4.1 Checking at arrival

- upon receipt check that the pump and related accessories are

not damaged.

4.2 Pump mounting / Drive connection

- The pump must be installed so that it is easely accessible for

inspection and maintenance.

- The vacuum pump must be installed on a rigid base or stand.

The drive can be by cardan shaft, belts and pulley or by hydraulic

motor.

- The cardan shaft must be mounted so that it does not create any

axial thrust; the inclination of the shaft must not exceed 15

°

 (see

fig. 2).

- When using the belts and pulley, the pulley can be mounted

directly on the rotor shaft eccept for R 430 .

For model R 430 pumps the pulley must be mounted with the

suitable support, supplied by JUROP.

The alignment between the pulley of the pump and the driving

pulley must be thoroughly checked.

The V-belts tension must be normal, that means the belts must

flex for about 2 cm. under the thumb pressure.

- With the hydraulic transmission the motor must be connected by

means of a support and a flexible joint.

The transmission must be protected according

to current safety standards (for Europe 89/

392 CEE standards).

Check that the actual shaft rotation

direction matches that of the arrow on

the label fixed on the front of the pump.

Fig. 2

15

°

Transmission drive

Vacuum pump axle

axles must be parallel

16 - 20 mm

Flange must be

perfectly parallel

V-belts must be

exactly in line

- Check that the rotor/shaft is not blocked.

Figure 2

Summary of Contents for Defender 500

Page 1: ...1 www natvac com 800 253 5500 Defender 500 Owner s Record Date of Purchase _________________________ Purchased from __________________________ Serial Number ____________________________ National Vacuum Equipment Inc ...

Page 2: ... Pump Specifications 8 Drive System 9 Factory Settings 9 Operating Instructions 11 Recommended Lubricant 11 Maintenance 12 Check Vane Wear 12 Cold Weather Operation 12 Troubleshooting 13 Pump overheats 13 Pump doesn t turn 13 No vacuum 14 Vacuum Pressure Changeover Valve 15 Pump Layout 16 Vacuum Lines 16 Technical Dimensions 17 Parts Diagram 18 Parts List 19 ...

Page 3: ...period shall begin the day the product is shipped from our warehouse unless we are provided with an authentic copy of the original resale invoice in which case the one 1 year period shall begin at such invoice date 3 The covered product must be used in an application for which it was intended We do not recommend our product for particular uses or applications 4 Vane breakage or damage caused by va...

Page 4: ...sibility NVE goes to great lengths to ensure the quality and proper functionality of the products it sup plies Many products we supply are purchased for resale or are impossible or impractical to test prior to the installation of the item in a vacuum system It is therefore the responsibility of the final assembler to thoroughly test the vacuum system and components supplied to the assembler by NVE...

Page 5: ...period Customer must receive a return goods authorization RGA before returning product All serial numbered products must retain the NVE serial number tag to be qualified for warranty 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...

Page 6: ..._______ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ ________...

Page 7: ...d for extended operation Ordinary and extraordinary maintenance has to be done while the unit is stopped and the drive disconnected Repairs on plumbing have to be done after disconnecting pressure vacuum from the same Never start the pump if adequate safety devices are not installed Damaged safety equipment must be immediately replaced Be aware that the pump s body can reach temperature of over 28...

Page 8: ...stem pumps used to pressurize are for non continuous duty Overheating the pump will cause serious damage to the pump and or rotor seizure In order to maximize efficiency of the ballast air cooling system the filters must be kept clean Air Flow CFM free air 310 Air Flow CFM 60 vacuum 257 Max vacuum 92 Max absolute pressure PSI 21 8 Weight LBS 397 Oil consumption g h drops min total 135 80 Remote Oi...

Page 9: ...mined prior to ordering the pump Drive System ______________________________________________________ Direction of Rotation ___________________________________________ 7 The drive can be by cardan shaft belts and pulley or by hydraulic motor The cardan shaft must be mounted so that it does not create any axial thrust the inclination of the shaft must not exceed 15 see fig 2 The alignment between th...

Page 10: ...age Checking ______________________________________________ The automatic lubrication pumps are set at the factory during pump testing and should require no further adjustment during pump installation The pump should consume 12oz 15oz of oil per hour Please contact us if oil usage is outside of these parameters It is the responsibility of the installer to ensure proper vacuum relief settings press...

Page 11: ...normal motor oil thereby avoiding the problems associated with motor oil such as lacquering and excessive wear Acceptable oils include 1 NVE ISO 68 Oil 2 Penzoil Penzabell 68 T O 3 Shell Turbo 68 4 Mobil D T E Heavy Medium 5 Texaco Regal R O 68 NVE ISO 68 Oil is our recommended pump oil for the Challenger series vacuum pumps Challenger Vacuum Pump Oil is sold by the case six 1 gallon containers of...

Page 12: ...be Continue turning the shaft until the checking rod falls inside a vane groove touching the vane Mark the rod a second time If the distance between the two marks exceeds 3 16 the vanes must be replaced Once finished the checking procedure replace the plug of fig 3 Vanes should be replaced in sets and it is always a good idea to have an extra set of vanes on hand for emergencies Figure 3 Maintenan...

Page 13: ... pump is frozen thaw it If the pump is frozen thaw it out by heating the bottom of the pump with a torch or move the truck into a heated building Avoid freezing problems You can avoid freezing problems by putting a small amount of diesel fuel into the pump at the end of the day Cold Weather Operation ________________________________________ ...

Page 14: ...stment as described Oiler s pin not sealing Clean the related seat Cause Correction Broken vanes due to suction of Dismount the pump and replace damaged parts foreign objects damaged parts Check primary or bad lubrication shut off and lubrication system Frozen pump Unfreeze the vacuum pump Damaged drive system Check and replace damaged parts Flange bolts too tight Loosen the bolts TROUBLESHOOTING ...

Page 15: ...e valve Worn lip seals Replace the seals Blocked vacuum pump See previous instructions Leaking of the gate valves on the tank Tighten the valves Leaking of the seals on the tank Repair or replace the seals Primary shut off blocked Dismount and clean the parts Clogged connecting pipeline Clean the metal pipelines or replace the rubber ones No vacuum _________________________________________________...

Page 16: ...ndary Shutoff 4 Silencer and Oil Catch Muffler 5 Vacuum Pump 6 Safety Relief Valve The mounting of a secondary shutoff pos 3 is suggested in between the pump and the tank for protecting the vacuum pump A silencer pos 4 is suggested in order to reduce sound level 6 5 3 6 1 2 6 6 4 P U M P L AY O U T ...

Page 17: ...ender 500 17 www natvac com 800 253 5500 F F G G 6 890 11 170 11 417 5 275 31 617 8 751 3 000 3 150 16 879 8 195 21 726 SECTION F F SECTION G G 1 499 1 375 1 289 375 SQ 3125 SQ 1 201 9 815 4 908 752 13 000 ...

Page 18: ... M8 x 40 Flat Point 1 307 SHCS 1_4 20 UNC X 0 75 SHCS 1_4 20 UNC X 0 75 2 308 ACCESSORIES LIST PACKAGE SEPARATELY SEE NOTE 11 DESCRIPTION PART NUMBER UOM QTY ITEM PIN T HANDLE 250 X 4 120 0T5 EA 2 201 FITTING 1 4 TUBE X 1 8 NPTF WORLD 320 005 EA 1 202 OIL LINE 1 4 OD X 3 16 ID PFA 320 407 002 FT 5 203 FILTER OIL TANK PLASTIC 320 083 001 EA 1 204 OIL TANK 5QT W LOGO 320 082 001 EA 1 205 50 49 51 52...

Page 19: ...231 941 TOLERANCES UNLESS OTHER WISE SPECIFIED One place X 1 Two places XX 01 Three places XXX 005 Angles 1 All machined surfaces 125 RMS max Remove all burrs and sharp edges CAD drawing NO manual changes All dimensions in inches unless specified This document may contain confidential trade secret information which is the exclusive property of National Vacuum Equipment Any information on this draw...

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