Roots Packaged Blower Units

Roots Packaged Blower Units

Standard Blower and Exhaus SRB blower units and SRE exhauster units Each standard packaged blower or exhauster combines a Roots blower unit supplying oil-free air with an electric motor, vee-belt drive, intake filter/silencer, filter restriction indicator, discharge silencer, non return valves and relief valves. The blower is mounted on a rigid baseplate and contained within a practical acoustic enclosure, which reduces radiated noise levels for noise sensitive locations. The SRB range covers pressures from 300 to 1000 mbar (1.5-15kW) with inlet volumes from 50m 3 /h to 300m 3 /h. The SRE range covers 300 mbar to 500 mbar (1.5kW to 7.5kW). Pressure relief and non-return valves are supplied loose for installation into customer s pipework. Both packages have hinged access with security locks. MRB blower units The MRB range of standard package units offer pressures from 300 mbar to 1000 mbar (7.5kW to 30kW) and inlet volumes from 400m 3 /h to 1400m 3 /h. Each MRB package combines a Roots URAI blower unit supplying oil free air with an electric motor, vee-belt drive, intake filter/silencer, discharge silencer, filter restriction indicator, non return valve and pressure relief valve. The blower is mounted on a rigid baseplate with fork-lift slots and contained within a fan vented acoustic enclosure, which reduces radiated noise levels for noise sensitive locations. The pressure relief valve and non-return valve are supplied loose for installation into customer s pipework. The package has hinged access with security locks. MRE exhauster units The MRE offers vacuums from 200 mbar to 500 mbar (5.5kW to 30kW) with all the features of the MRB. All packages comply with the EU machinery directive with regard to CE marking. At the heart of the SRB/E and MRB/E Package Reliability is at the heart of every package in the form of the DRESSER Roots Universal RAI blower/ exhauster. The URAI is designed, precision machined and built using the latest computer aided methods. This ensures close tolerances between the impellers, casing and headplates to minimise back slippage of air and improve both efficiency and reliability. The DRESSER Roots exclusive Figure of 8 gearbox design improves oil distribution and lengthens bearing and gear life. Oversize anti-friction bearings support the shafts. On the drive end, cylindrical roller bearings carry vee-belt side loading and extend service life. dimensions SRB BOWER UNIT W H mm mm mm A Pack 800 600 725 B Pack 1100 950 850 H W Channels for lifting with forklift truck SRE EXHAUSTER UNIT W H mm mm mm A Pack 800 600 725 B Pack 1100 950 850 W H MRB BOWER UNIT W H mm mm mm 1300 1100 1100 H W MRE EXHAUSTER UNIT W H mm mm mm 1300 1100 1100 Channels for lifting with forklift truck Channels for lifting with forklift truck Channels for lifting with forklift truck H W

ter Packages performance data Air volumes at Blower Operating 1013 mbar a Motor Units pressure and 20 C size Weight Pack mbar m 3 /hr cfm kw Kg size SRB 3002 300 20 12 1.5 199 A SRB 3005 300 50 29 1.5 199 A SRB 3010 300 100 59 2.2 201 A SRB 3015 300 150 88 3.0 215 A SRB 3020 300 200 118 3.0 332 B SRB 3025 300 250 147 4.0 361 B SRB 3030 300 300 177 5.5 386 B SRB 4002 400 20 12 1.5 199 A SRB 4005 400 50 29 1.5 199 A SRB 4010 400 100 59 2.2 201 A SRB 4015 400 150 88 4.0 227 A SRB 4020 400 200 118 4.0 344 B SRB 4025 400 250 147 5.5 386 B SRB 4030 400 300 177 7.5 389 B SRB 5002 500 20 12 1.5 199 A SRB 5005 500 50 29 2.2 201 A SRB 5010 500 100 59 3.0 209 A SRB 5015 500 150 88 4.0 242 A SRB 5020 500 200 118 5.5 386 B SRB 5025 500 250 147 7.5 389 B SRB 5030 500 300 177 7.5 396 B SRB 6002 600 20 12 1.5 199 A SRB 6005 600 50 29 2.2 201 A SRB 6010 600 100 59 4.0 221 A SRB 6015 600 150 88 5.5 384 B SRB 6020 600 200 118 7.5 387 B SRB 6025 600 250 147 7.5 389 B SRB 6030 600 300 177 11.0 464 B SRB 7005 700 50 29 3.0 209 A SRB 7010 700 100 59 5.5 384 B SRB 7015 700 150 88 5.5 384 B SRB 7020 700 200 118 7.5 387 B SRB 7025 700 250 147 11.0 457 B SRB 7028 700 280 165 11.0 457 B SRB 8007 800 70 41 4.0 221 A SRB 8010 800 100 59 5.5 384 B SRB 8015 800 150 88 7.5 387 B SRB 8020 800 200 118 11.0 455 B SRB 8025 800 250 147 11.0 457 B SRB 8028 800 280 165 11.0 464 B SRB 9013 900 130 77 7.5 387 B SRB 9015 900 150 88 7.5 387 B SRB 9020 900 200 118 11.0 464 B SRB 9025 900 250 147 11.0 464 B SRB 9028 900 280 165 15.0 466 B SRB 10018 1000 180 106 11.0 455 B SRB 10020 1000 200 118 11.0 464 B SRB 10025 1000 250 147 15.0 466 B SRB 10027 1000 270 159 15.0 466 B Ratings are ± 4% based on inlet air at temperature of 20 deg C, inlet pressure of 1013 mbara and RH of 0%. Air volumes at Blower Operating 1013 mbar a Motor Units pressure and 20 C size Weight Pack mbar m 3 /hr cfm kw Kg size MRB 5080 500 800 471 18.5 590 MRB 5085 500 850 500 18.5 640 MRB 5090 500 900 530 18.5 640 MRB 5100 500 1000 589 22 700 MRB 5105 500 1050 618 30 790 MRB 5120 500 1200 706 30 790 MRB 5130 500 1300 765 30 790 MRB 6040 600 400 235 11 570 MRB 6045 600 450 265 15 570 MRB 6050 600 500 294 15 570 MRB 6055 600 550 324 15 570 MRB 6060 600 600 353 15 620 MRB 6070 600 700 412 18.5 620 MRB 6075 600 750 441 22 620 MRB 6080 600 800 471 22 620 MRB 6085 600 850 500 22 620 MRB 6090 600 900 530 22 620 MRB 7045 700 450 265 15 570 MRB 7060 700 600 353 18.5 590 MRB 7070 700 700 412 22 690 MRB 7085 700 850 500 30 770 MRB 8040 800 400 235 15 580 MRB 8045 800 450 265 18.5 600 MRB 8050 800 500 294 18.5 600 MRB 9040 900 400 235 18.5 600 MRB 9045 900 450 265 18.5 600 MRB 9050 900 500 294 22 650 MRB 10040 1000 400 235 18.5 600 MRB 10045 1000 450 264 22 650 MRB 10050 1000 500 294 22 650 Ratings based on inlet air at temperature of 20 deg C, inlet pressure of 1013 mbara and RH of 0%. Air volumes at Exhauster Vacuum 1013 mbar a Motor Units and 20 C size Weight Pack mbar m 3 /hr cfm kw Kg size SRE 202 200 20 12 1.5 208 A SRE 205 200 50 29 1.5 208 A SRE 210 200 100 59 1.5 208 A SRE 215 200 150 88 2.2 220 A SRE 220 200 200 118 2.2 220 A SRE 225 200 250 147 3.0 364 B SRE 230 200 300 177 3.0 364 B SRE 302 300 20 12 1.5 208 A SRE 305 300 50 29 1.5 208 A SRE 310 300 100 59 2.2 210 A SRE 315 300 150 88 2.2 220 A SRE 320 300 200 118 3.0 228 A SRE 325 300 250 147 4.0 376 B SRE 330 300 300 177 5.5 401 B SRE 403 400 30 18 1.5 208 A SRE 405 400 50 29 1.5 208 A SRE 410 400 100 59 3.0 228 A SRE 415 400 150 88 4.0 240 A SRE 420 400 200 118 4.0 240 A SRE 425 400 250 147 5.5 401 B SRE 513 500 130 77 4.0 240 A SRE 515 500 150 88 4.0 240 A SRE 520 500 200 118 5.5 405 B SRE 525 500 250 147 7.5 405 B Ratings are ± 4% based on inlet air at temperature of 20 deg C, inlet pressure of 1013 mbara and RH of 0%. MRB 3040 300 400 235 7.5 380 MRB 3045 300 450 265 7.5 380 MRB 3050 300 500 294 7.5 380 MRB 3055 300 550 324 7.5 395 MRB 3060 300 600 353 7.5 570 MRB 3065 300 650 383 11 570 MRB 3070 300 700 412 11 570 MRB 3080 300 800 471 11 570 MRB 3090 300 900 530 11 620 MRB 3100 300 1000 589 15 620 MRB 4035 400 350 206 7.5 380 MRB 4040 400 400 235 11 425 MRB 4045 400 450 265 11 425 MRB 4050 400 500 294 11 425 MRB 4055 400 550 324 11 448 MRB 4060 400 600 353 11 570 MRB 4065 400 650 383 15 570 MRB 4075 400 750 441 15 570 MRB 4085 400 850 500 15 620 MRB 4100 400 1000 589 18.5 650 MRB 4110 400 1100 647 18.5 650 MRB 4125 400 1250 736 22 700 MRB 4130 400 1300 765 22 700 MRB 4135 400 1350 793 22 700 MRB 4140 400 1400 823 30 785 MRB 5040 500 400 235 11 570 MRB 5045 500 450 265 11 570 MRB 5050 500 500 294 11 570 MRB 5055 500 550 324 15 570 MRB 5060 500 600 353 15 570 MRB 5065 500 650 383 15 570 MRB 5070 500 700 412 15 570 MRB 5075 500 750 441 18.5 590 MRE 240 200 400 235 5.5 560 MRE 260 200 600 353 5.5 570 MRE 280 200 800 471 7.5 570 MRE 2100 200 1000 589 11 640 MRE 2120 200 1200 706 15 640 MRE 2140 200 1400 824 15 640 MRE 340 300 400 235 7.5 560 MRE 360 300 600 353 11 570 MRE 380 300 800 471 11 570 MRE 3100 300 1000 589 15 640 MRE 3120 300 1200 706 18.5 650 MRE 435 400 350 206 7.5 560 MRE 455 400 550 324 11 570 MRE 470 400 700 412 15 570 MRE 4100 400 1000 589 18.5 650 MRE 4120 400 1200 706 22 700 MRE 4130 400 1300 765 22 700 MRE 530 500 300 176 7.5 510 MRE 550 500 500 294 15 570 MRE 570 500 700 412 18.5 570 MRE 585 500 850 500 22 700 MRE 5100 500 1000 589 30 780 MRE 5115 500 1150 677 30 780 MRE 5130 500 1300 765 30 780 Ratings based on inlet air at temperature of 20 deg C, inlet pressure of 1013 mbara and RH of 0%. Other models available on request

Standard Blower and Exhaus All packages comply with EU machinery directive with regard to CE marking. Extra ow Pulse Units The PRIME package unit range features five different standard designs. All PIME packages can be supplied with easy access enclosures for noise sensitive locations. As a guide, individual package noise levels are between 70 and 85 dba at 1 metre from the package perimeter in free-field conditions, depending on site conditions. Please contact our sales department for noise levels at specific operating conditions or to discuss noise requirements. All PRIME units are supported by a full manufacturer s warranty and sales and service support is available from the DRESSER Roots Huddersfield facility in the UK and from our worldwide after-market support network. All PRIME units are designed to be user friendly and to demonstrate the following key features: Extremely compact design ow installation cost Short installation cycle time ow operation costs Easy maintenance access Due to the increased use of common components and a standardised design concept, the PRIME range of package units are available on short lead times. The Roots XP Advantage The XP Whispair blower is designed to reduce noise and power loss by utilising an exclusive wraparound plenum and proprietary double* jet Whispair feature to control pressure equalisation and increase reliability. The proven design concepts of the 3 lobe impeller profile together with the double jet Whispair feature, combine to produce such low pulsation levels that inlet and discharge silencers are no longer required to control in-pipe noise and pulsation. This in turn allows for an extremely compact and cost competitive package unit design. * XP N08 and N10 have a single jet design. PRIME PACKS dimensions Enclosure Dimensions (mm) Size W1 W2 H1 H2 Z MRN 1300 1100 1100 1100 1100 ift off lid N 1800 1400 1700 1900 1750 800* A 2100 1500 1940 2000 1780 950* B 2600 1700 2200 2700 2450 1200* C 3000 1400 2500 2900 2650 1350* D Refer to factory Removable Panels * 2 doors each side Z W2 W1 Z H2 H1

ter Packages performance data N Pack (XP N10 above 37kW & XP N08) MRN Pack (XP N10 up to 37kW) A Pack (XP 110 & XP 108) B Pack (XP 210 & XP 208) C Pack (XP 310 & XP 308) D Pack (XP 410 & XP 408) MODE XP N10 XP N08 SPEED 2000 2500 3000 3200 3800 4000 4500 5000 5300 2000 2500 3000 3200 3800 4000 4500 5000 5300 Vol (m 3 /hr) 496 658 820 885 1079 1144 1306 1468 1565 699 915 1131 1217 1476 1563 1779 1995 2124 300 t (c) 32 30 30 30 29 32 30 30 30 29 mbar Motor (kw) 7.5 7.5 11 11 15 15 15 18.5 18.5 5.5 7.5 11 11 11 11 15 15 18.5 Vol (m 3 /hr) 473 635 797 861 1056 1121 1283 1445 1542 630 846 1062 1149 1408 1494 1710 1926 2056 400 t (c) 47 43 40 40 39 45 41 40 40 40 mbar Motor (kw) 11 11 15 15 18.5 18.5 18.5 22 30 11 15 18.5 18.5 22 22 30 30 30 Vol (m 3 /hr) 452 614 776 841 1035 1100 1262 1424 1521 603 819 1035 1121 1380 1467 1683 1899 2028 500 t (c) 58 52 50 50 50 57 53 50 49 49 mbar Motor (kw) 11 15 15 18.5 22 22 30 30 30 15 18.5 22 22 30 30 30 37 37 Vol (m 3 /hr) 433 595 757 822 1016 1081 1243 1405 1502 578 794 1010 1096 1355 1442 1658 1874 2003 600 t (c) 75 66 62 61 59 72 63 60 60 58 mbar Motor (kw) 15 18.5 18.5 22 30 30 30 37 37 18.5 22 30 30 30 37 37 45 45 Vol (m 3 /hr) 416 578 740 805 999 1064 1226 1388 1485 554 770 987 1073 1332 1419 1635 1851 1980 700 t (c) 88 75 72 70 68 85 79 70 68 65 mbar Motor (kw) 15 18.5 22 22 30 30 37 37 45 22 30 30 30 37 37 45 55 55 Vol (m 3 /hr) 400 562 724 789 983 1048 1210 1372 1469 533 749 965 1052 1311 1397 1613 1829 1959 800 t (c) 110 92 87 84 82 105 87 73 72 70 mbar Motor (kw) 18.5 22 30 30 37 37 37 45 45 22 30 37 37 45 45 55 55 75 Vol (m 3 /hr) 709 774 968 1033 1195 1357 1454 900 t (c) 105 96 92 90 mbar Motor (kw) 30 30 37 37 45 55 55 Vol (m 3 /hr) 695 760 954 1019 1181 1343 1440 1000 t (c) 113 108 102 100 mbar Motor (kw) 30 37 45 45 45 55 55 MODE XP 110 XP 108 XP 210 XP 208 SPEED 1650 2000 2500 3000 3500 4200 1650 2000 2500 3000 3500 4200 1200 1500 2000 2500 3000 3300 1200 1500 2000 2500 3000 3300 Vol (m 3 /hr) 845 1071 1394 1717 2040 2492 1127 1429 1860 2290 2721 3324 1247 1653 2330 3008 3685 4091 1662 2203 3105 4008 4910 5451 300 t (c) 31 30 30 29 30 31 31 30 29 29 30 31 32 31 30 30 31 32 32 30 30 30 31 32 mbar Motor (kw) 11 15 18.5 22 30 30 15 18.5 22 30 37 45 18.5 22 30 37 45 55 22 30 37 55 55 75 Vol (m 3 /hr) 811 1037 1360 1683 2005 2457 1082 1383 1814 2245 2676 3279 1188 1595 2272 2949 3626 4032 1584 2125 3027 3930 4832 5373 400 t (c) 42 41 39 39 39 40 42 41 39 39 39 40 44 42 40 40 41 41 44 42 40 40 40 41 mbar Motor (kw) 15 18.5 22 30 37 37 18.5 22 30 37 45 55 22 30 37 45 55 75 30 37 55 75 75 90 Vol (m 3 /hr) 781 1007 1330 1653 1975 2427 1042 1343 1774 2205 2636 3239 1137 1543 2220 2897 3575 3981 1515 2056 2959 3861 4763 5305 500 t (c) 55 52 50 49 49 49 55 52 50 49 49 49 57 53 51 50 50 51 57 53 50 50 50 50 mbar Motor (kw) 18.5 22 30 37 45 45 22 30 37 45 55 75 30 37 45 55 75 75 37 45 55 75 90 110 Vol (m 3 /hr) 754 980 1303 1625 1948 2400 1006 1307 1738 2169 2599 3202 1090 1497 2174 2851 3528 3934 1453 1994 2896 3799 4701 5242 600 t (c) 68 64 61 59 59 59 68 64 61 59 59 59 72 66 62 60 60 60 72 66 61 60 60 60 mbar Motor (kw) 22 30 37 45 55 55 30 37 45 55 75 75 30 37 55 75 90 90 45 55 75 90 110 132 Vol (m 3 /hr) 729 955 1278 1600 1923 2375 972 1274 1705 2135 2566 3169 1047 1454 2131 2808 3485 3891 1396 1937 2839 3742 4644 5185 700 t (c) 82 76 72 70 69 6982 76 72 70 69 68 87 79 73 71 70 70 87 79 73 70 69 69 mbar Motor (kw) 22 30 37 45 55 75 37 45 55 75 75 90 37 45 75 75 90 110 55 75 75 110 132 132 Vol (m 3 /hr) 706 932 1254 1577 1900 2352 941 1243 1674 2104 2535 3138 1008 1414 2091 2768 3445 3852 1343 1884 2786 3689 4591 5132 800 t (c) 96 89 83 81 79 78 96 89 83 80 79 78 103 92 84 81 80 80 103 92 84 81 80 79 mbar Motor (kw) 30 37 45 55 75 75 37 45 55 75 75 110 45 55 75 90 110 132 55 75 90 110 132 150 Vol (m 3 /hr) 684 910 1233 1555 1878 2330 970 1376 2054 2731 3408 3814 900 t (c) 112 102 95 92 89 88 120 107 96 92 90 90 mbar Motor (kw) 30 45 45 55 75 75 45 55 75 110 132 132 Vol (m 3 /hr) 889 1212 1535 1858 2310 1341 2018 2695 3372 3779 1000 t (c) 116 107 103 100 98 121 109 103 101 100 mbar Motor (kw) 45 55 75 75 90 75 90 110 132 150 MODE XP 310 XP 308 XP 410 XP 408 SPEED 1000 1500 2000 2600 1000 1500 2000 2600 800 1000 1500 2000 800 1000 1500 2000 Vol (m 3 /hr) 1958 3278 4598 6183 2610 4371 6131 8244 3685 4847 7751 10655 4913 6462 10334 14205 300 t (c) 33 31 31 32 33 31 31 32 31 30 29 31 31 30 29 30 mbar Motor (kw) 30 45 55 75 37 55 75 110 45 55 90 132 75 90 132 185 Vol (m 3 /hr) 1852 3172 4493 6077 2470 4230 5990 8103 3537 4698 7602 10506 4715 6264 10135 14007 400 t (c) 46 42 41 42 46 41 41 41 42 40 39 40 42 40 39 39 mbar Motor (kw) 37 55 75 110 45 75 110 132 55 75 110 150 90 110 150 220 Vol (m 3 /hr) 1759 3079 4400 5984 2345 4106 5866 7979 3406 4567 7471 10375 4540 6089 9961 13832 500 t (c) 60 53 51 51 60 53 51 51 55 52 49 49 55 51 49 49 mbar Motor (kw) 45 75 90 132 55 90 132 150 75 90 150 185 90 132 185 260 Vol (m 3 /hr) 1675 2995 4316 5900 2233 3994 5754 7867 3287 4449 7353 10257 4382 5931 9803 13675 600 t (c) 76 65 62 61 76 65 62 61 68 63 59 59 68 63 59 58 mbar Motor (kw) 75 75 110 132 75 110 132 185 90 110 185 220 132 150 220 300 Vol (m 3 /hr) 1598 2918 4238 5823 2130 3891 5651 7763 3178 4340 7244 10148 4237 5786 9658 13529 700 t (c) 93 77 73 71 93 77 72 71 82 75 69 68 82 75 69 68 mbar Motor (kw) 75 90 132 150 75 132 185 220 110 132 200 260 132 185 260 335 Vol (m 3 /hr) 1526 2846 4166 5751 2034 3795 5555 7667 3077 4238 7142 10046 4102 5651 9523 13394 800 t (c) 111 90 84 82 111 90 84 81 96 88 80 78 96 88 80 78 mbar Motor (kw) 75 110 132 185 90 132 185 260 110 150 220 260 150 185 300 375 Vol (m 3 /hr) 2778 4099 5683 2982 4143 7047 9951 900 t (c) 104 96 92 112 101 91 88 mbar Motor (kw) 110 150 220 132 185 260 335 Vol (m 3 /hr) 2714 4035 5619 4053 6957 9861 1000 t (c) 118 107 103 115 102 98 mbar Motor (kw) 132 185 220 185 260 375 Ratings based on inlet air at temperature of 15 deg C, inlet pressure of 1013 mbara and RH of 0%.

Conventional Packages In addition to the standard package units supplied in the pre-designed enclosures, conventional packages are available for all blower and vacuum pump models. A full range of ancillaries and acoustic enclosures are available. All packages comply with EU machinery directive with regard to CE marking. Acoustic Enclosures A range of acoustic enclosures to match the various sizes of packaged units can be supplied. These are close fitting and are constructed from a range of bolted panels which are manufactured from galvanised sheet steel lined with a layer of sound absorbent material. C u s t o m i s e d U n Assembling the panels is extremely simple enabling the enclosure to be speedily built up on site. Access doors and sound attenuating ducts for ventilating air are incorporated. The enclosure can be made fully weather-proof if required. i t s Ancilliary Equipment Electric Motor: An electric motor of sufficient power to drive the blower/ exhauster at the specified duty is fitted. V-Belt Drive: A wedge belt drive arrangement consisting of pulleys, taper bushes and V-belts is supplied. Guard: A guard designed to cover the drive is fitted. Inlet Filter / Silencer: An inlet filter combined with an absorptive or reactive type silencer is fitted to the intake of the blower. Discharge Silencer: A specially designed silencer is fitted to the discharge of a blower or exhauster. This dissipates pulsation energy and reduces pipeline noise levels. Filter Restriction Indicator: A restriction indicator to give visual indication of blockage of the inlet filter is fitted. Pressure Operated Electrical Switch: A pressure or vacuum operated electrical switch designed to stop the machine in the event of an excessive pressure developing on the outlet of the blower, or vacuum at the inlet of an exhauster, can be fitted as an option. Non-Return Valve: A non-return valve is fitted in the discharge line of a blower or in the suction line of an exhauster to prevent reversal of rotation. Relief Valve: A relief valve is fitted in the discharge line of a blower or the suction line of an exhauster. This is capable of passing the whole of the volume delivered at the operating speed of the blower. Flexible Connection: A flexible connection to prevent vibration and shock from reaching downstream equipment is supplied. Anti-Vibration Mountings: Anti-Vibration mountings capable of isolating both high and low frequencies from foundations can be supplied as an option. Pressure and Vacuum Gauges: Should a visual indication of pressure be required, pressure and vacuum gauges can be supplied as options.

Engineered Packages DRESSER Roots offer fully engineered packaged blower units designed to meet customer requirements. Pre-assembled skid-mounted packages, with all piping, valves and instrumentation in place are produced for pressure or vacuum applications allowing for simple on-site installation. A two-stage DVJ dry vacuum pump package for non-cryogenic air separation by VSA (Vacuum Swing Adsorption). A two-stage XP Oxygen blower package. This two-stage VJ vacuum pump package is employed on VSA (Vacuum Swing Adsorption) duty. RAM 406-G-DPJ high pressure gas blower for digester gas applications.

Customer Services At DRESSER Roots we provide a complete range of services geared to keeping your Roots equipment operating at peak efficiency, and stopping unnecessary downtime. Installation & Commissioning Our comprehensive aftermarket support includes installation and commissioning supervision for all packaged blower and vacuum pump units. Repairs Blower repairs can be carried out in any of the four DRESSER Roots in-house repair facilities in the USA, UK or the Netherlands, or by one of our ten world-wide authorised service and repair facilities. Spare Parts Spares are generally available for blowers & vacuum pumps on an ex-stock basis. The new 20,000 sq. ft. Roots service centre in Houston, Texas. Testing All DRESSER Roots blowers and vacuum pumps are factory tested prior to shipment. Tests can include full package unit performance tests to recognised international standards. Quality The DRESSER Roots manufacturing facilities in the USA and UK are fully ISO 9001 certified and follow Total Quality Management procedures. BS EN ISO 9001 : 1994 APPROVA CERT No. 929559 A new variable speed model XP test rig. Blower repair work. DRESSER, Inc. PO BOX B7, Off St Andrews Road, Huddersfield HD1 6RB England. Tel: +44 (0) 1484 42 22 22 Fax: +44 (0) 1484 42 34 29 E-mail: dmd - roots@dresser.co.uk www.rootsblower.com 2004 Dresser, Inc. Due to continuous development we reserve the right to amend our specification without notice. JET.PKG.3.04