Table of Contents
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INSTALLATION OPERATION MAINTENANCE
™
RAM
and RCS (400 & 600 RCS Vertical WHISPAIR
Only) - GAS, DVJ, DPJ and VJ Series Blowers
Contents
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . 1 - 12
Information Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety Precautions & Operating Limitations . . . . . . . . . . . . 3
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 9
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Inspection & Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Do These Things To Get The Most From Your ROOTS
J
Check shipment for damage. If found, file claim with
carrier and notify Roots.
J
Unpack shipment carefully, and check contents against
Packing List. Notify Roots if a shortage appears.
J
Store in a clean, dry location until ready for installation.
Lift by methods discussed under INSTALLATION to
avoid straining or distorting the equipment. Keep covers
on all openings. Protect against weather and corrosion if
outdoor storage is necessary. See page 4 for instruc-
tions.
J
Read OPERATING LIMITATIONS and INSTALLATION sec-
tions in this manual and plan the complete installation.
J
Provide for adequate safeguards against accidents to
persons working on or near the equipment during both
installation and operation. See SAFETY PRECAUTIONS.
J
Install all equipment correctly. Foundation design must
be adequate and piping carefully done. Use recommend-
ed accessories for operating protection.
ISRB-2000 rev.0807
GAS BLOWER SECTION . . . . . . . . . . . . . . . . . . . . . . .13 - 14
DVJ BLOWER SECTION . . . . . . . . . . . . . . . . . . . . . . . 15 - 18
Internal Abradable Coating . . . . . . . . . . . . . . . . . . . . .17 - 18
406 RAM DPJ BLOWER SECTION . . . . . . . . . . . . . . . . . . 19
VJ BLOWER SECTION . . . . . . . . . . . . . . . . . . . . . . . .20 - 24
Installation Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 - 24
Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 - 27
™
blower
J
Make sure both driving and driven equipment is cor-
rectly lubricated before start-up. See LUBRICATION.
J
In event of trouble during installation or operation, do
not attempt repairs of Roots furnished equipment. Notify
Roots, giving all nameplate information plus an outline
of operating conditions and a description of the trouble.
Unauthorized attempts at equipment repair may void
Roots warranty.
J
Units out of warranty may be repaired or adjusted by the
owner. Good inspection and maintenance practices
should reduce the need for repairs.
NOTE: Information in this manual is correct as of the date of
publication. Roots reserves the right to make design or
material changes without notice, and without obligation to
make similar changes on equipment of prior manufacture.
For your nearest Roots Office, dial our Customer Service Hot
Line toll free; 1-877-363-ROOT(S) (7668) or direct 832-590-
2600.
US $3.00, Canada $4.50
™
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Summary of Contents for Dresser ROOTS RAM 400 Series
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Page 1: Table Of Contents
INSTALLATION OPERATION MAINTENANCE US $3.00, Canada $4.50 ™ ™ and RCS (400 & 600 RCS Vertical WHISPAIR Only) – GAS, DVJ, DPJ and VJ Series Blowers Contents GENERAL INFORMATION ..... . . 1 - 12 GAS BLOWER SECTION . - Page 2 Roots products are sold subject to the current General Terms of Sale, GTS-5001 and Warranty Policy WP-5020. Copies are available upon request. Contact your local Roots Office or Roots Customer Service Hot Line 1-877-363-ROOT(S) (7668) or direct 832-590-2600.
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Page 3: Safety Precautions & Operating Limitations
Safety Precautions It is important that all personnel observe safety precautions • Stay clear of inlet and discharge openings. to minimize the chances of injury. Among many considera- tions, the following should be particularly noted: • Stay clear of the blast from pressure relief valves and the suction area of vacuum relief valves. -
Page 4: Operation
Operation already provided, and that thermometers be in both inlet and Before operating a blower under power for the first time, discharge lines. Readings from these instruments will show recheck the unit and the installation thoroughly to reduce the whether pressure or temperature ratings of the blower are likelihood of avoidable troubles. -
Page 5: Installation
Installation ROOTS blowers & exhausters are treated after factory of the unit headplates. Test them first for tightness and assembly to protect against normal atmospheric corrosion. fractures by tapping with a hammer. In lifting, keep the The maximum period of internal protection is considered to direction of cable pull on these bolts as nearly vertical as be one year under average conditions, if shipping plugs &... - Page 6 is to be treated as a unit for leveling purposes. Satisfactory mm) total indicator reading, taken on the two coupling hubs. installation can be obtained by setting the baseplate on a con- Maximum deviation from parallel of the inside coupling faces crete slab that is rigid and free of vibration, and leveling the should not exceed .001”...
- Page 7 Acceptable Blower Drive Arrangement Options ACCEPTABLE UNACCEPTABLE For your nearest Roots office contact information, please consult the last page of this document.
- Page 8 CAUTION: Drive couplings and sheaves (pulleys) should have Pipe flanges or male threads must meet the unit connections an interference fit to the shaft of the blower (set screw types accurately and squarely. DO NOT attempt to correct misalign- of attachment generally do not provide reliable service.) It is ment by springing or cramping the pipe.
- Page 9 Blower Orientation Conversion - RAM WHISPAIR™ units For your nearest Roots office contact information, please consult the last page of this document.
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Page 10: Lubrication
Lubrication Due to sludge build-up and seal leakage problems, Roots rec- hours with an oil temperature of about 180°F (82°C). As the ommendation is DO NOT USE Mobil SHC synthetic oils in oil temperature increases by increments of 15-18°F (8°C - Roots blowers. -
Page 11: Inspection & Maintenance
Inspection & Maintenance: RAM & RCS (400 & 600 RCS vertical only) Series - GAS, DVJ, DPJ & VJ becomes excessive or when the blower is disassembled for A good program of consistent inspection and maintenance is the most reliable method of minimizing repairs to a blower. A any reason. -
Page 12: Troubleshooting
Troubleshooting Checklist (See each section for more specific information) Trouble Item Possible Cause Remedy No flow Speed too low Check by tachometer and compare with published performance Wrong rotation Compare actual rotation with Figure 1 Change driver if wrong Obstruction in piping Check piping, valves, silencer to assure open flow path Low capacity Speed too low... -
Page 13: Gas Blower Section
GAS Blowers WHISPAIR ™ Gas Blower The plugged drain connections are provided to allow periodic draining of any fluid which might accumulate in the seal WHISPAIR Gas Blower units are the same general design as chamber. This can be a combination of lubricating oils, liq- the standard WHISPAIR model except that (4) mechanical uids entrained in the process gas, or condensables from the seals are used in place of the (4) inboard lip seals. -
Page 14: Tions
Table 1a RAM-G & RAM-GJ Blower Maximum Allowable Operating Conditions Frame Gear Speed Temp. Rise Delta Pressure Inlet Vacuum Size Diameter (Inch) F° (C°) (mbar) INHG (mbar) 4000 (133) (1241) (539) 4000 (133) (1241) (539) 4000 (133) (1241) (539) 4000 (133) (1034) (539) -
Page 15: Dvj Blower Section
400 - 600 Series DVJ Blowers Information in this section not to conflict with ohter sections Table 1b RAM-DVJ blower of this manual. Maximum Allowable Operating Conditions Operating Limitations Frame Speed Temp. Rise Inlet Vacuum Size F° (C°) INHG (mbar) Normal DVJ applications have a vacuum on the inlet and atmospheric pressure on the discharge jet port connections. -
Page 16: Tions
Figures 3b - DVJ VACUUM SYSTEM SCHEMATIC For DVJ Applications... -
Page 17: Internal Abradable Coating
DVJ & DPJ Blowers are Supplied with Internal Abradable Graphite-Based Coating Coating clearances and timing are involved, this should be done before the new parts are coated. Subsequent cleaning and The coating is basically a fine-grained natural graphite*. It is coating may involve at least partial disassembly for proper applied as several coats. - Page 18 Alternate #2 required. However, the blower may be hard to turn initially as a result. Turn over by hand until the running is free. Do not Where ambient, and coated metal temperatures, are not at try to free up the blower by coupled or belted drive, and do least 70°F, allow each coat to cure at least overnight in shop not try to spin the rotors with shop air.
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Page 19: 406 Ram Dpj Blower Section
406 RAM DPJ Section Information in this section should not conflict with other sec- Figure 2, are recommended. Roots recommends delta/differ- tions of this manual. ential pressure and temperature protection. Operating Limitations Installation The RAM DPJ can be used in vacuum/pressure or combina- Inspect the return air plenum to be sure it is clear of any for- tion applications as long as a portion of the discharge air is eign material before installing the return cooled air piping... -
Page 20: Vj Blower Section
VJ Section ROOTS VJ vacuum blowers are designed to handle a limited Maximum limits for vacuum. temperature and speed, along quantity of liquid without damage. This permits introduction with recommended and maximum water flow rates as speci- of sealing water at the blower inlet to improve operating effi- fied in Table 1d in this section, for various standard sizes of ciency and reduce internal temperature rise. -
Page 21: Tions
B. If no problems have appeared, restart the blower and let temporary protective screen as described under it operate for 5 to 10 minutes under no-load conditions. INSTALLATION is strongly recommended. Adjust spray control valve (B) so that the water flow meter show a rate in gallons per minute equal to the Recheck blower leveling, drive alignment and Recommended Rate in Table 1d in this section. -
Page 22: Tions
which conditions may vary widely. If such variations can put Scale build-up an excessive vacuum on the blower, overloading can often be A basic principle of the ROOTS VJ unit is that there is no avoided by installation of a pilot operated vacuum relief valve internal contact of moving parts. -
Page 23: Installation Options
scale is primarily organic. Where the scale composition is pounds or other corrosion-causing materials should be primarily mineral, or is unknown, samples of the material avoided because of the harm which will result to the should be checked and specific recommendations request- internal surfaces and clearances of the blowers. - Page 24 Figure 3f - Seal Water Control Piping Diagram NOTE: Only if 2-stage exhauster Figure 3g - Installation of Two Stage VJ-2 Vacuum Blower...
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Page 25: Parts Lists
RAM series parts list 4” & 6” gear diameter RCS series parts list 4” & 6” gear diameter Specified Lubricants for Gas, DVJ, DPJ & JV for DVJ, DPJ & JV (Refer to drawing #81881023) (Refer to drawing #65467023) ROOTS Synthetic Oil: ISO-VG-320 Grade Item # Part Name... - Page 27 For your nearest Roots office contact information, please consult the last page of this document.
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Page 28: Tions
Shanghai Factory Service • Phone: +86 21 5858 7638 ISRB-2000 rev.0807 ©2006 Dresser, Inc. all rights reserved. • Printed in the USA • ROOTS, RAM and WHISPAIR are trademarks of Dresser, Inc. • Universal RAI is a registered trademark of Dresser, Inc.
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