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Anest Iwata OCX-793B Instruction Manual

Maintenance tools and fixtures
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Instruction Manual 
Maintenance Tools and Fixtures 
OCX‐793B
ISP‐ 250B/250C 
ISP‐ 500B/500C 
This instruction manual includes important warnings, cautions, and instructions
for safe and effective use of the scroll vacuum pump.
manual thoroughly and understand it fully before use.
place for immediate reference.
７ ８
3176
Shinyoshida-cho,
Kohoku-ku,
Yokohama 223-8501,
Be sure to read this
Keep it an appropriate
Japan
Manual No.V074-00
Code No. 08801913

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  • Page 1 Instruction Manual  Maintenance Tools and Fixtures  OCX‐793B ISP‐ 250B/250C  ISP‐ 500B/500C  This instruction manual includes important warnings, cautions, and instructions for safe and effective use of the scroll vacuum pump. Be sure to read this manual thoroughly and understand it fully before use. Keep it an appropriate place for immediate reference.
  • Page 3 NOTE...

  • Page 4: Inportant Information

    Important information This is the instruction manual of exclusive tools (OCX-793B) which are used when you maintain and inspect oil-free scroll vacuum pumps ISP-250B,-250C,-500B and 500C. Be sure to read this instruction manual as well as instruction manual for the related scroll vacuum pumps in order to correctly understand its operation, functions and maintenance.

  • Page 5: Table Of Contents

    Contents Inportant information ... . . 1 Contents ..... . . 2 1.

  • Page 6: For Safe Operation

    1. For safe operation As the points below are very important for safe operation, be sure to fully read and understand before inspection and maintenance, and operate correctly. WARNING Never pump toxic, explosive, flammable, corrosive gases, chemicals, solvents or powders. ※When you inspect the pumps, flowing substances, explosion or fire can cause bodily injury.

  • Page 7: Name Of Fixtures And Tools

    2. Names of Fixtures and Tools (OCX-793B)

  • Page 8: Preparation

    3. Preparation 3.1 Check the product (OCX-793B) ①Check that model name is as you ordered (Model name is attached to side of package). ②Check that there is no shortage or damage. If so, contact the distributor who sold it to you.
  • Page 9 4.1 Maintenance standards Do the maintenance according to maintenance standards which are shown in time and period, whichever comes first. Maintenance items at each point include all items up to the time before. Do the maintenance carefully without missing any points. Maintenance standards Parts Major...
  • Page 10 4.2 Necessary items for maintenance Prepare the following items before maintenance. 1．Block（large） 2pcs. (55mm×55mm×length 250mm wood which does not damage pump) 2．Block（small） 1pc. (20mm×10mm×length 250mm wood which does not damage pump) 3．Clean cloth 4．Spanners (･17mm wrench flat ･19mm wrench flat ･24mm wrench flat) 5．Torque wrench for bolt with Hex.

  • Page 11: Minor Maintenance

    5. Minor Maintenance - Every 8,000 hours 5.1 Disassembly Before disassembly, open Inlet to atmospheric pressure, repeat close-open operation for a couple of times in order to clean inside the pump, and cut off Important electric source. あ WARNING Be sure to cut off electric source before wiring or inspection. ※If not, it can cause electric shock or damage by turning section(Fan).
  • Page 12 5.1.3 Remove Air Flush Port or Air Flush Kit 5.1.3.a ISP-250B／500B Version ①Loosen nuts while keeping Air Flush Port and pipes by spanner. ②After taking FS(2) away, remove Air Flush Port. ISP-250B ISP-500B 5.1.3.b ISP-250C／500C Version ①Remove Air Flush Kit from pump. ISP-250C ISP-500C 5.1.4 Disassembly of Body set...
  • Page 13 ④Remove Hex. Socket head bolts which holds Fan(1) on FS(1) side, and remove a Washer and Fan(1). ・Remove Parallel Key and pull Crank Shaft. 5.2 Replace O ring When replacing o-rings, clean up the ditch for O rings by clean cloths and put new O rings. Refer to 4.1 Maintenance standards for maintenance intervals and 9.
  • Page 14 あ CAUTION Never use solvent when cleaning inside the pump and Tip Seal. ※If done, it can shorten lifetime. Never use solvent 5.4 Maintenance of FS(1) 5.4.1 Remove Bearing set(1) ①Remove Hex. Socket head bolts which hold Bearing set(1). ②Insert 2 straight edge screwdrivers under outer dia.
  • Page 15 ・Wipe out dust on side and bottom of Tip Seal groove by using clean cloth and bamboo spatula. ・Wipe out dust which remains at Pin Crank and inner wall of FS(1). ・Blow out the whole unit with air. ・If you feel some resistance to remove Tip Seal , be sure to wipe out dust. ・Be sure to clean Tip Seal groove with soft bamboo spatula since groove is fragile.
  • Page 16 5.4.5 Fit G-seal ①Apply slight amount of LOCTITE 242 or 542 to outer periphery of new G-seal. ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ②Insert G-seal to Fixture 1 and fit it to FS(1) ②Insert G-seal to a set of Fixtures 1 and 1-2B, from the Fin side. and fit it to FS(1) from the Fin side.
  • Page 17 5.4.7 Grease additional space of Pin Crank (ISP-250C/500C) ①Clean old grease in the additional space of Pin Crank. ②Put new exclusive grease in with the amount below. ISP-250C ISP-500C Grease volume ［／1 pc.］ 0.05 ml (0.1 g) 0.05 ml (0.1 g) Additional space of Pin Crank 5.4.8 Fit Tip Seal...
  • Page 18 5.5.3 Clean FS(2) ①Wipe out dust on the place where Shaft Seal(2) of FS(2) and G-seal enter, with clean cloth. ・Wipe out dust on wall and bottom of scroll wrap with clean cloth. ・Wipe out dust attached to side and bottom of Tip Seal groove by using bamboo spatula covered with clean cloth so as not to damage the groove.
  • Page 19 5.5.5 Fit G-seal ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ①Insert Fixture 7 and new G-seal to Fixture 4. ①Insert Fixture 7-2 and new G-seal to a set of Fixture 4 and Fixture 4-2. ②Insert Fixture 6 and Fixture 5 in this order to ②Insert Fixture 6-2 and Fixture 5 in this order to FS(2) FS(2) from scroll side.
  • Page 20 5.5.7 Fit Tip Seal ・Place white soft back-up part facing downwards and black hard sliding material facing upwards. ・Fit Tip Seal from the center of FS(2). ・Internally extruded section near the center of wrap functions as a stopper to hold Tip Seal. Completely push sliding material side with hand into the groove.
  • Page 21 5.6.3 Fit G-seal ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ①Insert Fixture 14 and new G-seal to Fixture 13, ① Insert Fixture 14-2B and new G-seal to and then to OS. Insert Fixture 10 from the Fixture 13-2B, and then to OS. Insert Fixture opposite side. 10-2 from the opposite side.
  • Page 22 5.6.5 Fit Needle Bearing of Pin Crank ・Insert straight (not askew) Seal (ISP-500B/-500C only) and Needle Bearing (Pin Crank) in this order into holes on the outer periphery of OS ・ Fit Plate (ISP-500B/-500C only), apply slight amount of LOCTITE 242 or 542 to screws and tighten them.
  • Page 23 ③ Clean Outlet Flange and sealing surface where Clean Outlet Flange sealing surface where Outlet ③ Outlet hole and Exhaust Valve contact by using hole and Exhaust valve contact by using bamboo clean cloth and brass brush so as not to spatula covered with clean cloth so as not to damage, and blow out with air.
  • Page 24 5.9.2 ISP-250C/500C version ①Remove Air Flush Kit from pump. ②Put slight amount of LOCTITE 242 or 542 and tighten Air Flush Kit to pump. ISP-250C ISP-500C 5.10 Assembly Assemble in reverse order of disassembly. 5.10.1 Assemble Body set ①Place 2 blocks (wood which height is over 55mm) on horizontal workbench and FS(1) on the top of them.
  • Page 25 ・Check that there is no dust or damage on the surface of O ring for FS(1), FS(2) and O ring surface. ・Apply slight amount of ISP exclusive grease to the O ring surface. ・Check that O ring does not come off from mating side and Tip Seal does not Important come off from the groove.
  • Page 26 5.10.2 Fit Body set ①Stand Motor set and Body set vertically and fit new Spider to Coupling, with central dent on Motor side. ②Match nail of Fan with nail of Spider, Parallel Pin with hole position, and fit Body to Motor set. ・Check that Fan(2) turns smoothly and tighten Hex.

  • Page 27: Major Maintenance

    6. . Major Maintenence - Every 16,000 hours 6.1 Disassembly of Pump Body Before disassembly, open Inlet to atmospheric pressure, repeat close-open operation for a couple of times in order to clean inside the pump, and cut off Important electric source. あ...
  • Page 28 6.1.3 Remove Air Flush Port or Air Flush Kit ISP-250B／500B Version ①Loosen nuts while keeping Air Flush Port and pipes by spanner. ②After taking FS(2) away, remove Air Flush Port. ISP-250B ISP-500B ISP-250C／500C Version ①Remove Air Flush Kit from pump. ISP-250C ISP-500C 6.1.4 Disassembly of Body set...
  • Page 29 ④Remove Hex. Socket head bolts which holds Fan(1) on FS(1) side, and remove a Washer and Fan(1). ・Remove Parallel Key and pull Crank Shaft. 6.1.5 Remove O-ring Refer to 4.1 Maintenance standards for maintenance intervals and 9. Extended Drawing for the positions of O rings, the list of O rings is: ・O ring between FS(1) and FS(2) ・O ring for Inlet Flange...
  • Page 30 6.2 Disassembly of FS(1) 6.2.1 Remove Bearing set(1) ①Remove Hex. Socket head bolts which hold Bearing set(1). ②Insert 2 straight edge screwdrivers under outer dia. of Bearing set(1), lift it up and remove it. * Do not lose Washer between Bearing Set(1) and FS(1) only for ISP-250B/250C.
  • Page 31 6.2.4 Remove Pin Crank Bearing (if necessary) ①Turn Pin Crank by hand and check that it turns lightly and smoothly. ・If you feel rumble when turning by hand, replace all Pin Crank with new one. ② When replacing Pin Crank set, remove two screws with cross head screwdriver. ・Wipe out adhesives and dust around screws.
  • Page 32 6.3 Reassembly of FS(1) 6.3.1 Fit Ball Bearing ①Fit Fixture 17 to Bearing case from Flange side (pay attention to direction) . ②Fit Fixture 9B to Bearing case from the opposite side and insert new Bearing horizontally. ③ Fit Fixture 18 (pay attention to direction) to Bearing and screw M12 Hex.
  • Page 33 6.3.3 Fit G-seal ①Apply slight amount of LOCTITE 242 or 542 to outer periphery of new G-seal. ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ②Insert G-seal to Fixture 1 and fit it to FS(1) ②Insert G-seal to a set of Fixtures 1 and 1-2B, from the Fin side. and fit it to FS(1) from the Fin side.
  • Page 34 6.3.5 Fit New Pin Crank Bearing (if necessary) ・Wipe out adhesives and dust around screws. ・Fit new Pin Crank set and tighten by screws with slight amount of LOCTITE 242 or 542. ・Use LOCTITE 242 or 542 (medium strength). ・Apply slight amount of LOCTITE to thread section. Important ・Wipe out extruded LOCTITE with clean cloth.
  • Page 35 6.4 Disassembly of FS (2) 6.4.1 Remove G-seal Remove the G-seal as follows and replace it with new one. ・Insert straight edge screwdriver to G-seal from the Fin side of FS(2) and remove it. ・ Pay attention not to damage Flange surface of FS(2), scroll section, and Important Needle Bearing section .
  • Page 36 6.4.4 Clean FS(2) ①Wipe out dust on the place where Shaft Seal(2) of FS(2) and G-seal enter, with clean cloth. ・Wipe out dust on wall and bottom of scroll wrap with clean cloth. ・Wipe out dust attached to side and bottom of Tip Seal groove by using bamboo spatula covered with clean cloth so as not to damage the groove.
  • Page 37 6.5.2 Fit Shaft Seal (2) Apply slight amount of LOCTITE 242 or 542 around outer periphery of new Shaft Seal (2). ① ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ②Insert Fixture 7 to Fixture 4 and insert them to ②Insert Fixture 7-2 to a set of Fixtures 4 and 4-2, FS(2) from the Fin side.
  • Page 38 6.5.3 Fit G-seal ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ①Insert Fixture 7 and new G-seal to Fixture 4. ①Insert Fixture 7-2 and new G-seal to a set of Fixture 4 and Fixture 4-2. ②Insert Fixture 6 and Fixture 5 in this order to FS(2) from scroll side. ②Insert Fixture 6-2 and Fixture 5 in this order to FS(2) from scroll side.
  • Page 39 6.6 Disassembly of OS 6.6.1 Remove G-seal Remove G-seal as follows. ・Place OS on horizontal stand with rubber. ・Place batten on OS and remove G-seal with straight edge screwdriver. ・Remove G-seal on the opposite side in the same way. Important Pay attention not to damage scroll top, bottom and side surfaces of OS 6.6.2 Remove Main Needle Bearing ①Remove 2 Tip Seals attached to the both sides of OS from the end of outer periphery.
  • Page 40 6.6.3 Remove Mini Needle Bearing ③ Remove screws of Needle Bearing (Pin Crank) around OS with cross head screwdriver. ④ Remove Plate (ISP-500B/-500C only) and push Needle Bearing and Seal (ISP-500B/-500C only) from the opposite side and remove them. ⑤ Fully wipe out old grease attached to Needle Bearing with clean cloth while turning roller until no more comes out.
  • Page 41 6.7 Reassembly of OS 6.7.1 Fit Needle Bearing ＩＳＰ－２５０Ｂ／２５０Ｃ ＩＳＰ－５００Ｂ／５００Ｃ ①Insert new Needle Bearing to Fixture 13 and fit ①Insert new Needle Bearing to Fixture 13-2B and fit to one side of OS. Fit Fixture 10 from the opposite to one side of OS. Fit Fixture 10-2 from the opposite side.
  • Page 42 ・Pay attention to direction of Fixtures. ・Needle Bearing consists of 2 pcs. Do not combine with other set of Bearing. Important ・Pay attention not to damage top, bottom and side of scroll of OS. ・Wipe out dust on Fixtures with clean cloth. 6.7.2 Fit G-seal ＩＳＰ－２５０Ｂ／２５０Ｃ...
  • Page 43 6.7.3 Fit Tip Seal ・Place white soft back-up part facing downwards and black hard sliding material facing upwards. ・Fit Tip Seal in accordance with shape at the center of OS and insert gradually further towards outside. 6.8 Replace Exhaust valve ＩＳＰ－２５０Ｂ／２５０Ｃ...
  • Page 44 6.10 Maintenance of Air Flush Port 6.10.1 ISP-250B/500B version ①Loosen nuts while keeping Air Flush Port and pipes by spanner. ②After taking FS(2) away remove Air Flush Port. ③Blow out inside the Air Flush Port. ④Blow out inside pipes attached to FS(1) and FS(2). ⑤Put slight amount of LOCTITE 242 or 542 and tighten Air Flush kit.
  • Page 45 6.11 Replace Tip Seal ①Place white soft back-up part facing downwards and black hard sliding material side facing upwards and push it into the groove by hand so that protruded portion of black sliding material is minimal. ②First insert Tip Seal in accordance with the shape at the center on FS(2) side of OS and insert gradually further towards outside.
  • Page 46 ③ Put the FS(2) Insert Guide (Black one for ISP-250B/-250C, White one for ISP-500B/-500C) on the Crank Shaft. Fit new O ring to FS(2), fit it to FS(1) and tighten the Hex. socket head bolts. Tightening torque ISP-250B/-250C 7.8±0.7 N･m（80±7kgf･cm) ISP-500B/-500C 14.7±0.7 N･m（150±7kgf･cm) ・Check that there is no dust or damage on the surface of O ring for FS(1),...
  • Page 47 ⑤ Stand Body set vertically, fit Parallel Key and Fan(1). Apply slight amount of LOCTITE 242 or 542 to Hex. socket head bolts and fully tighten along with Washer. Tightening torque 14.7±0.7N･m(150±7kgf･cm) ・Turn Fan(2) by hand and check that it turns smoothly (a little bit heavier than rotating resistance checked in Disassembly ５.１.１.) If rotation is heavy, disassemble again and check that Tip Seal does not come off.
  • Page 48 6.13 Break-in operation あ WARNING Never pump toxic, explosive, flammable, corrosive gases, chemicals, solvents or powders. ※When you inspect the pumps, flowing substances, explosion or Pump clean gas fire can cause bodily injury. Prevent short-circuit by breaker of proper volume. ※If not, it can cause fire or electric shock.
  • Page 49 ⑪Evenly fill ISP exclusive grease [0.1ml(0.2g)] between OS G-seal and Needle Bearings; FS(2) G-seal and Needle Bearings; and between 2 lips of FS(2) Shaft Seal(2) and G-seals of OS around the whole periphery with syringe. ⑫Assemble in reverse order of disassembling. あ...

  • Page 53: Exploding Drawing

    9. Exploding Drawing ISP-250B...
  • Page 54 ISP-500B...
  • Page 55 ISP-250C...
  • Page 56 ISP-500C...
  • Page 57 NOTE...

This manual is also suitable for:

Isp-250bIsp-250cIsp-500bIsp-500c

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