National Vacuum Equipment WPT 480/P Manual

Owner’s Manual
&
Operating Instructions
WPT 480/P, WPT 600/P, WPT 720/P
National Vacuum Equipment, Inc.

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© 2011 National Vacuum Equipment, Inc.
Revision: 3 (Release) March 2011
No part of this manual may be reproduced without the written permission of
National Vacuum Equipment, Inc.
WPT 480/P
WPT 600/P
WPT 720/P
Owner’s Record
Date of Purchase: _________________________
Purchased from: __________________________
Serial Number: ____________________________

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Contents
Introduction
About National Vacuum Equipment, Inc. 5
Limited Warranty
Warranty 7
Warranty Procedures 9
The WPT/P Series Pumps
Pump Specifications 11
Performance 12
System requirements 13
Operating Instructions
Installation 15
Automatic oil pump 16
Adjusting the automatic oil pump 16
Recommended lubrication 17
Normal operation for liquid cooled pumps: 18
Maintenance 19
Determining the rotation of the pump 19
WPT Pump Cooling System
WPT Pump Cooling System 20
Troubleshooting
Pump overheats 21
Too much oil use 21
Pump doesn’t turn 22
No vacuum or pressure in tank 22
Pump Rebuilding
Complete rebuild 23
Table of Contents continues on next page.

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Parts List - WPT Series Pumps
Parts Diagram 34
Parts List 35
Four-Way Valve Assembly
Four-Way Valve Diagram and Parts List 37
Lubrication/Cooling Systems
WPT 480/P-WPT 600/P-WPT 720/P 38
WPT 480/PW-WPT 600/PW-WPT 720/PW 39
Lubrication/Cooling System Parts 40
Automatic Oil Pumps3-4 43
Index

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Introduction
General Information
About National Vacuum Equipment, Inc.
Congratulations! You now own a quality vacuum/pressure
pump exclusively distributed in North America by National
Vacuum Equipment, Inc. You have not only acquired a
superior piece of equipment from a qualified dealer, you
have hired a team of vacuum experts. We stand ready to
work with your dealer to answer your questions and
provide you with the information necessary to keep your
equipment in peak working condition.
Thank you for using National Vacuum Equipment.
OUR MISSION:
We are dedicated to the manufacture and wholesale
distribution of quality vacuum system products at a
reasonable price, on a timely basis. We are a “one-stop
shop” for manufacturers and distributors of vacuum
equipment.
NVE
NVE

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OUR HISTORY:
National Vacuum Equipment, Inc. was founded in 1980 by
Bruce Luoma. The Company started as a retailer of vacuum
pumps. Soon after it started, the Company secured the
rights to exclusive distribution of the Battioni vacuum
pumps in North America. This helped the Company to
evolve into its current status as a wholesale supplier.
To reach the goal of becoming a full service supplier of
vacuum system components, the Company began
fabricating its own line of componentry, purchased and
developed its own line of vacuum pumps, and began
purchasing for resale various valves and accessories.
Today, NVE has full service machine and fabrication 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.

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Limited Warranty
WPT 480/P
WPT 600/P
WPT 720/P
National Vacuum Equipment, Inc.
guarantees that the product it provides is free of
manufacturer’s defects, including materials and
workmanship. Properly installed and maintained
product is warranted for a period of one (1) year
subject to the following conditions:
1. A properly completed warranty registration card
must be received by us within 30 days of sale to
end user for pump sales to be considered
warrantable. All pumps received for warranty
consideration must retain the original NVE serial
number tag.
2. The one (1) year 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.
National Vacuum Equipment, Inc.
Guarantees that the product it provides is free of manufacturer’s
defects, including materials and workmanship. Properly installed
and maintained product is warranted for a period of one (1) year
subject to the following conditions:
1. A properly completed warranty registration card must be
received by us within 30 days of sale to end user for pump sales
to be considered warrantable. All pumps received for warranty
consideration must retain the original NVE serial number tag.
2. The one (1) year 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 vane breakage, is not war-
rantable.
5. Damage caused by improper use or lack of proper
maintenance is not warrantable.

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6. Manufacturer’s liability under this or any other warranty,
whether express or implied, is limited to repair of or, at
the manufacturer’s option, replacement of parts which are
shown to have been defective when shipped
7. Manufacturer’s liability shall not be enforceable for any
product until National Vacuum Equipment, Inc. has been
paid in full for such product.
8. Except to the extent expressly stated herein, manufac-
turer’s liability for incidental and consequential damage is
hereby excluded to the full extent permitted by law.
9. Manufacturer’s liability as stated herin cannot be altered
except in writing signed by an ofcer of National Vacuum
Equipment, Inc.
10. Certain products provided by National Vacuum Equipment,
Inc. are covered by their respective manufacturer’s warran-
ties (e.g., engines used in the NVE engine drive packages).
These products are not covered by the National Vacuum
Equipment, Inc. Manufacturer’s Warranty.
11. Final assemblers responsibility. NVE goes to great lengths
to insure the quality and proper functionality of the products
it supplies. Many products we supply are purchased for
resale or are impossible or impractical to test prior to the in-
stallation of the item in a vacuum system. It is therefore the
responsibility of the nal assembler to thoroughly test the
vacuum system and components supplied to the assembler
by NVE prior to the delivery of the nal product to the end
user.
12. Not responsible for pump coupling tightness or alignment.
Customer needs to inspect periodically to ensure proper
alignment and to check tightness of set screws.

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Any items found to be defective after delivery to the end user that
should have been discovered prior to deliver will qualify replace-
ment of the defective part only with absolutely no compensation
for outside labor or travel expenses. Any subsequent damage to
other components caused by the defective part will be the sole
responsibility of the assembler.
____________________________________________________
Warranty Procedures
Should a potential warranty situation arise, the following
procedures must be followed:
• Contact your dealer or NVE immediately upon the occurrence of
the event and within the warranty 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 qualied 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 upon our
inspection, based upon prices at the time of purchase.

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The WPT Series Pumps
Model-Specific Information
for the
WPT 480/P
WPT 600/P
WPT 720/P
WPT Series Pump Specifications
Model Number 480 600 720
RPM Range 600-1250 600-1250 600-1250
Max. Air Flow-CFM 300 385 467
Max. Continuous Vacuum 25 25 25
Max. Intermittent Vacuum 28 28 28
Max. Continuous Pressure 28 25 25
Max. Intermittent Pressure 30 30 30
Pump Drive Rotation CW/CCW CW/CCW CW/CCW
Porting Size 3 inch 3 inch 3 inch
Manifold With Four Way Valve Std Std Std
End Thrust Protection Std Std Std
Bearings Sealed From Pump Interior Std Std Std
Anti-Spin Check Valve Std Std Std
Automatic Lubrication System Std-2 pt Std - 3 pt Std-4pt
Oil Tank Capacity-Quarts 4 5 6
Net Weight 547 lbs 660 lbs 720 lbs
WPT 720

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Performance
WPT 600/P PERFORMANCE
WPT 720/P PERFORMANCE
PRESSURE PSI VACUUM – INCHES OF MERCURY
RPM
1250
1000
800
HP
CFM
HP
CFM
H.P
CFM
25
36
216
28
160
23
116
20
30
225
24
168
19
127
15
25
237
19
182
15
136
10
19
254
14
197
11
150
5
13
274
10
214
7
165
0
8
300
6
237
4
188
3
9
293
7
232
5
184
6
10
286
8
223
5
174
9
11
277
9
214
6
166
12
12
271
10
203
7
160
15
14
260
11
188
8
156
18
15
245
12
174
9
152
21
16
228
13
160
10
146
24
18
185
14
130
11
120
27
19
109
15
80
12
70
WPT 480/P PERFORMANCE
PRESSURE PSI VACUUM – INCHES OF MERCURY
RPM
1250
1000
800
HP
CFM
HP
CFM
H.P
CFM
25
51
312
39
235
31
176
20
42
318
32
246
26
191
15
35
331
27
256
20
200
10
27
346
20
270
16
211
5
19
361
15
285
11
226
0
12
385
9
323
6
247
3
13
380
10
308
7
244
6
15
374
11
297
8
235
9
16
364
12
288
9
226
12
18
355
13
285
10
214
15
19
340
14
267
11
198
18
21
324
16
250
12
182
21
22
303
17
232
13
158
24
24
272
18
203
15
117
27
26
193
20
144
16
85
PRESSURE PSI VACUUM – INCHES OF MERCURY
RPM
1250
1000
800
HP
CFM
HP
CFM
H.P
CFM
25
57
388
47
300
37
225
20
49
400
40
315
31
240
15
40
414
32
330
26
255
10
32
427
24
340
20
270
5
23
448
17
390
14
290
0
15
467
11
380
8
310
3
16
464
12
370
9
305
6
18
459
14
365
10
300
9
20
446
16
360
12
290
12
22
434
18
345
14
280
15
24
427
20
340
15
270
18
26
409
21
320
16
255
21
28
390
22
300
18
235
24
30
351
24
265
19
205
27
31
280
26
210
20
140

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System requirements
High quality components
• The pump body and rotor are constructed of cast
iron with free sliding vanes made of special
nonmetallic, heat resistant material.
• Vanes wear evenly because tips always remain in
contact with the wall surface.
• For maximum life and proper performance we
recommend the use of our compatible
components, Portal Shutoff F-800-LC-8-3 and
Moisture Trap
F-901B.

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Operating Instructions
WPT 480/P
WPT 600/P
WPT 720/P
Installation
• Check pump rotation. Standard rotation is
clockwise unless otherwise marked. See
Determining the Rotation of Pump.
• Recommended operating speed is 850 to 1000
rpm.
• Pump should always be mounted in a level,
horizontal position on a firm, flat surface.
• Grade 5 bolts should be used in installation. It is
important to use flat washers and lock washers.
• We recommend the use of oil resistant hose on
both the inlet and outlet sides of the pump. If
using direct drive system, always use a flexible
coupling. We recommend the use of Woods Sure
Flex Couplers.
• The drive mechanism should be suitable for the
horsepower required to drive the pump.
• Because WPT pumps are fitted with roller bearings
the rotor is able to float from side to side. It is
important during initial setup that no undue
pressure is put on the rotor that would cause the

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• Cooling system: normal operating temperature is
140°F - 175°F. Maximum temperature is 200°F.
• Coolant lines should be assembled as follows:
a. (Cool water) From coolant source to the
circulating pump to the fitting on the top of the
rear endplate back to coolant source.
b. After filling with coolant, run the circulating
pump and recheck the coolant level.
c. After running for several minutes, loosen the
thermometer slightly to allow any air trapped in
the pump to escape. Then retighten the
thermometer.
• A 2” pressure relief valve and a 1½” vacuum relief
valve have been shipped with your pump and need
to be mounted on the top of the pump.
Automatic oil pump
• The automatic oil pumps are set at the factory
during pump testing and should require no further
adjustment during pump installation.
• The pumps are adjusted to one drop every two
seconds per outlet. This oil rate equals 2.7 fluid
oz. per hour.
Adjusting the automatic oil pump
The automatic oil pump is a metered piston-type pump.
If you wish to adjust the pump, please follow these instruc-
tions:
Adjusting the oil rate
Oil flow is changed by adjusting the length of the stroke of
the piston.

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1. To adjust the oil rate, remove cap
#P16. Under this cap you will find a jam
nut #P15 and adjusting screw #P11.
2. To adjust oil rate loosen jam nut
and turn adjusting screw clockwise to
reduce oil flow or counterclockwise to
increase oil flow.
3. When making adjustments do so
one turn of the screw at a time and test
before making further adjustments.
4. Be careful to not turn adjusting
screw too far counterclockwise as you
may disengage the gears and strip them
out.
Testing flow rate after adjustment
1. Observe oil drip rate in oil view meter or oil line to
ensure adequate lubrication.
2. Adjustments should be done gradually so as not to
starve the vacuum pump of oil.
Recommended lubrication
We recommend that turbine grade oil be used in all our pumps.
Turbine oil is more highly refined than motor oil and is much less
likely to create carbon. Turbine oil is available from your local oil
distributor. Below is a list of acceptable oils.
• Penzoil Penzabell 68 T.O.
• Shell Turbo 68
• Mobil D.T.E. Heavy – Medium
Recommended Lubricant
• We recommend that turbine oil be used in our pumps. Turbine
oil is much more resistant to breakdown due to heat than nor-
mal 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 oil per case.

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• Texaco Regal R.N.O. 68
Normal operation for liquid cooled pumps:
1. Check oil reservoir daily and fill as required.
2. When the pump is in operation, check the oiler to
insure flow of oil to the pump.
3. Do not operate the pump faster than recommended
rpm.
4. If an in-line 12 volt circulating pump is used,
make sure it is turned on.
5. Always monitor the water temperature gauge.
6. To operate the suction valve on top of the pump,
move the handle in the appropriate direction for
either vacuum or pressure. Center it for neutral.
7. We recommend periodic cleaning of your pump.
To do this, remove the suction line from the pump.
Move the suction valve to neutral, run the pump at
an idle, and pour into the pump intake one pint of
diesel fuel. Allow the pump to run a short time,
move the suction valve to vacuum, and blow our
the diesel fuel and dirt. Move the suction valve to
neutral and pour in a pint of oil. Allow the pump to
run a short time before reassembling.
8. We recommend checking vane wear every twelve
months. A new vane is nearly flush with the rotor.
Measure the wear and if is over 1/4" we
recommend
recommend replacing vanes. It’s good to always keep
a spare set of vanes on hand for emergencies.

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replacing vanes. It’s good to always keep a spare set of
vanes on hand for emergencies.
Maintenance
• Oil should be supplied to pump at a rate of 1 drop
every 2 seconds.
• Average usage of oil is approximately 1-2 qts. per
40 hours, depending on operation.
• Normal vane life is approximately 2000 hours;
however, this will vary greatly with temperature,
material being pumped, and proper maintenance.
Occasionally, liquid and dirt may enter the pump,
causing vanes to stick in the rotor slots, along with
excessive vane and housing wear. When this
occurs, you must clean the inside of the pump.
Determining the rotation of the pump
As one faces the drive end of the pump:
•If the oiler is on the right, the pump shaft turns
clockwise.

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•If the oiler is on the left, the pump shaft turns
counterclockwise.
WPT Pump Cooling System
• Because vacuum pumps generate large amounts of
heat during operation, consideration of pump
cooling is very important.
• If you are installing a liquid cooled pump, follow
the pump manufacturers recommendations for
pump cooling.
• Make sure all guards are in place.
• With liquid cooled pumps it is a good idea to
install shutoff valves in the water lines.