Anest Iwata OCX-793B User manual

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.
７ ８
3176 Shinyoshida-cho, Kohoku-ku, Yokohama 223-8501, Japan
Manual No.V074-00
Code No. 08801913
MaintenanceToolsandFixtures
OCX‐793B
ISP‐  250B/250C
ISP‐  500B/500C
InstructionManual

NOTE

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. The operator shall be fully
conversant with the requirements stated within this instruction manual including important
warnings, cautions and operation. Wrong operation (mishandling) can cause serious bodily injury,
death, fire or explosion.
◆About safety
Warnings and cautions are especially important for safe operation. Symbols and marks have the
following meanings.
Examples of warnings and cautions
WARNING Indicates a potentially hazardous situation which, if not avoided,
may result in serious injury or loss of life.
CAUTION Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or property damage.
Examples of symbols
Indicates「you must be careful」. We will briefly explain in or near the symbol.
(The example on the left is [Be careful about electric shock])
Indicates「you must not do」. We will briefly explain in or near the symbol.
(The example on the left is [Never touch])
Indicates「you must do」. We will briefly explain in or near the symbol.
(The example on the left is [Be sure to ground])
＊We shall not be responsible for any injury or damage caused by disregard of
warnings, cautions or instructions.
Supplementary notes
Important Indicates notes which we ask you to observe. They are helpful to achieve
full performance and function of the equipment.
1

Contents
2
Inportant information . . . . . . . . . . . . . 1
Contents . . . . . . . . . . . . . . . . . . . . . . . 2
1. For safe operation . . . . . . . . . . . . . . . 3
2. Name of fixtures and tools . . . . . . . . 4
3. Preparation . . . . . . . . . . . . . . . . . . . . . 5
4. How to use . . . . . . . . . . . . . . . . . . . . . . 5
5. Minor maintenance . . . . . . . . . . . . . . . 8
6. Major maintenance . . . . . . . . . . . . . . 24
7. Fixture combination chart . . . . . . . . 47
8. Parts list . . . . . . . . . . . . . . . . . . . . . . . 48
9. Exploding Drawing . . . . . . . . . . . . . . 50

3
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
Pump clean gas
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.
Cut off electric source
Be sure to cut off electric
source before wiring or
inspection.
※If not, it can cause electric
shock or damage by turning
section(Fan).
Maintenance after
Pump is cool
Do the maintenance
after pump becomes
fully cool.
※If not, it can cause
burns injury.
Install breaker
Prevent short-circuit by
breaker of proper volume.
※If not, it can cause fire or
electric shock.
Be sure to ground
Be sure to ground.
※If not, it can cause
electric shock or fire.
CAUTION
Use ISP exclusive
grease
Be sure to use ISP exclusive
grease
for Bearings .
※Mixing with other oil can
shorten grease lifetime and
damage Bearings.
Conduct periodic
maintenance
Conduct periodic
maintenance and
inspections.
※If not, it can cause
damage or shorter
lifetime.
Never use solvent
Never use solvent when
cleaning inside the pump and
Tip Seal.
※If done, it can shorten
lifetime.

4
2. Names of Fixtures and Tools (OCX-793B)

5
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.
③Check that accessory (instruction manual) is attached.
3.2 Install Pump
Refer to an instruction manual of the pumps.
4. How to use
These are exclusive tools for doing the maintenance and inspection of Oil-Free Scroll
Vacuum Pumps, ISP-250B,-250C,-500B and 500C.
WARNING
Do the maintenance after pump becomes fully cool.
※If not, it can cause burns injury.
Maintenance after Pump is cool
Be sure to cut off electric source before wiring or inspection.
※If not, it can cause electric shock or damage by turning
section(Fan).
Cut off electric source
CAUTION
Conduct periodic maintenance and inspections.
※If not, it can cause damage or shorter lifetime.
Conduct periodic maintenance

6
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.
Parts
No. Where to inspect
Maintenance standards
Remarks
Minor Vapor pumping
Every 8,000hr
Major
Every 16,000hr Every 400 times
18 Needle bearing [FS(2)] grease／△ ○ △
Supply with
Bearing kit
21 Needle bearing [OS] grease／△ ○ △
31 Ball bearing [FS(1)] △ ○ △
37 O ring [Pin crank・Needle
bi]
△ ○ △
38 Needle bearing [Pin crank] grease／△ ○ △
53 Spider △ ○ △
17 G-seal [FS(2)] ○ ○ △
Supply with
Seal kit
19 Shaft seal(2) [FS(2)] ○ ○ △
20 G-seal [OS] ○ ○ △
28 - 1 Shaft seal(1) [FS(1)] ○ ○ △
28 - 2 G-seal [FS(1)] ○ ○ △
75 *1 Seal [Pin crank・Needle
bi]
○ ○ △
107 Exhaust valve set ○ ○ △
23 O ring [FS(2)] ○ ○ △
Supply with
O ring set
25 O ring [Inlet flange] ○ ○ △
202 *2 O ring [Outlet flange] ○ ○ △
101 Tip seal set(1) △ ○ △ Supply with
Tip seal set
103 Tip seal set(2) △ ○ △
104 Pin crank set △ △ △
306 *1 Air flush set ○ ○ ○
○．．．Replace
△．．．Replace if something goes wrong
＊１ ISP-500B/-500C only
＊２ ISP-250B/-250C only
Causes of failure
Shorten maintenance interval if conditions of installation place or operation is inappropriate.
Especially ambient temperature has great influence on failure.
Maintenance interval is based on 5
～ 40℃ ambient temperature and 25℃ average yearly ambient
temperature.
Shorten maintenance interval if temperature is over it. If not, it can cause failure.
Maintenance interval is not a guarantee interval.
あ CAUTION
Be sure to use ISP exclusive grease for Bearings .
※Mixing with other oil can shorten grease lifetime and damage
Bearings.
Use ISP exclusive grease
Important

7
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. Socket head
・for 4mm wrench flat which can measure 3.0N･m (30kgf･cm) torque
・for 5mm wrench flat and 6mm wrench flat which can measure15N･m
(150kgf･cm) torque
6．Rubber mat which can prevent sliding
7．Straight edge screwdriver
8．Cross head screwdriver
・small for M3（tip shape No.1）
・medium for M4（tip shape No.2）
9．Cutter (Sharp knife)
10．LOCTITE 242 or 542 (medium strength)
11．Tweezers（more than 150 mm）
12．Bamboo spatula, Brass brush
13．ISP exclusive grease
14．Stop ring supplier
15．Vernier caliper
16．Ampere meter (Clamp meter)
17．Air compressor etc.
18．Pirani vacuum gauge
19．Leak detector
4.3 Pump structure
This Pump is a scroll type vacuum pump. An orbiting
scroll (OS) rotates between a fixed scroll FS(1) and a
fixed scroll FS(2) and the set of scrolls compresses air.
FS(1) is on Motor side and FS(2) is on Fan Cover side.

8
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
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).
Cut off electric source
5.1.1 Remove Fan Cover
・Remove 4 Hex. Socket head bolts which tighten
Fan Cover, and remove Fan Cover and Cover
Plate.
Rotate Fan by hand and check smooth rotation, and remember the feeling
of rotating resistance.
When reassembling, check the slightly heavier rotating resistance. If rotation is
not smooth, something will go wrong inside the pump. Check each Bearing and
replace it if something goes wrong.
5.1.2 Remove Body set
・Place the pump vertically with Motor downwards.
・Remove Hex. Socket head bolts which hold Motor set
and FS(1), lift Body set and separate it from Motor set.
Rotate Motor Shaft by hand and check the smooth rotation.
If rotation is not smooth with some resistance, check Motor Bearings and Motor,
and replace it if something goes wrong.
Important
Important
Important

9
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.
5.1.3.b ISP-250C／500C Version
①Remove Air Flush Kit from pump.
5.1.4 Disassembly of Body set
①Place Body set with FS(1) downwards on 2
blocks (wood which height is over 55mm).
②Remove Hex. Socket head bolt which fixes Fan(2)
on FS(2) side, and remove Washer, Fan(2) and
Parallel Key. （In the case of ISP-250C,remove
Shim Ring between FS2 and Fan(2) as well.）
③Loosen Hex. Socket head bolts diagonally by
turns which fix FS(2), and remove them.
・Pull FS(2) towards axis and remove it.
・Pull OS towards axis and remove it.
・When pulling FS(2) and OS, pay attention not to damage
Needle Bearing or Shaft Seal with angle of Key groove of
Crank Shaft.
・When you cannot pull OS due to damaged OS Needle
Bearing, first do ④ item , pull Crank Shaft and OS at the
same time, and separate OS and Crank Shaft from FS(2)
side .
・Do not lose the Shim Ring for ISP-250C.
ISP-250B
ISP-250C
ISP-500C
Important
ISP-500B

10
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. 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
・O ring for Outlet Flange (only for ISP-250B/250C)
・O rings for Pin Crank
・Pay attention not to damage O ring groove and sealed O ring surface.
・Pay attention not to leave any thread of cloth in O ring surface and O
ring groove.
5.3 Clean Tip Seal
・Check that top of Tip Seal comes out from the groove
of FS(1),FS(2) and OS
・(by about 0.1mm) at any point.
・If extrusion is less than 0.1mm at
any point, replace all Tip Seals at the same time
(refer to 6.9).
Tip Seal height:
ISP-250B/-250C: 2.23～2.29mm
ISP-500B/-500C: 2.65～2.75mm
If it is not replaced, tip of scroll wrap contacts counter surface (bottom) and
damages it, resulting in failure.
5.3.1 Remove Tip Seal
・Gradually remove old Tip Seal from the end of outer
periphery edge.
・If you feel resistance when removing Tip Seal, dust
will attach to side and groove of Tip Seal. Wipe out
dust from the groove and Tip Seal by using clean
cloth and bamboo spatula.
・Remember each Tip Seal position to return it to
original position.
5.3.2 Clean Tip Seal
・Lightly wipe out both sides of Tip Seal while black sliding material facing upwards.
・If you feel resistance when removing Tip Seal, dust will attach to side and
groove of Tip Seal. Wipe out dust from the groove and Tip Seal by using
clean cloth and bamboo spatula.
・Never use solvent.
・It makes Tip Seal expand to clean too hard, which results in making it difficult to
insert it into the groove.
Important
Important
Important
Important

11
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. 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. Clean it up
before it is assembled later.
5.4.2 Remove G-seal and Shaft Seal(1)
・Insert straight edge screwdriver to G-seal from the scroll side, hit the screwdriver
and remove it.
・Insert Fixture 1 to Shaft Seal(1) from scroll side, fit Fixture 5 to FS(1) from the
opposite side, and screw M10 Hex. Socket head bolt with Washer, and Hex. nut .
・Turn Hex. nut and remove Shaft Seal(1).
・Check direction of Shaft Seal(1).
Side of Shaft Seal(1) where you can see spring faces G-seal.
・Pay attention to direction of Fixture 1.
Check direction of Fixture 1 in the drawing above.
・Remove Shaft Seal(1) toward the Fin side (opposite side of scroll).
5.4.3 Clean FS(1)
①Wipe out dust on the place where Bearing of FS(1) and Shaft Seal(1) enter.
・Wipe out dust on wall and bottom of scroll wrap, inside the Inlet Flange and Inlet
Filter with clean cloth.
Important

12
・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.
・Always use clean cloth.
Mixing with other grease can greatly deteriorate its performance.
・Pay attention not to leave the waste thread in the Bearings.
②Turn 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.
③When replacing Pin Crank set, remove two screws with cross head
screwdriver.
・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.
・Wipe out extruded LOCTITE with clean cloth.
5.4.4 Fit Shaft Seal(1)
①Apply slight amount of LOCTITE 242 or 542 to outer periphery of new Shaft Seal(1).
ＩＳＰ－２５０Ｂ／２５０Ｃ
②Insert Fixture 15 and Shaft Seal(1) to Fixture
1 and fit it to FS(1) from the Fin side .
・Fit Fixtures 2 and 5 in this order to FS(1) from
scroll side, and screw M10 Hex. Socket head
bolt along with Hex. nut and Washer.
ＩＳＰ－５００Ｂ／５００Ｃ
②Insert Fixture 15-2B and Shaft Seal(1) to a set of
Fixtures 1 and 1-2B and fit it to FS(1) from the Fin side.
・Fit Fixtures 2-2 and 5 in this order to FS(1) from scroll side,
and screw M10 Hex. Socket head bolt along with Hex. nut
and Washer.
③Turn Hex. nut and fit Shaft Seal(1) .
④Wipe out extruded LOCTITE with clean cloth.
・Pay attention to direction of Fixtures and Shaft Seal(1).
Side of Shaft Seal (1) where you can see spring faces Fixture.
・Wipe out extruded LOCTITE with clean cloth.
Important
Important
Important

13
5.4.5 Fit G-seal
①Apply slight amount of LOCTITE 242 or 542 to outer periphery of new G-seal.
ＩＳＰ－２５０Ｂ／２５０Ｃ
②Insert G-seal to Fixture 1 and fit it to FS(1)
from the Fin side.
・Fit Fixtures 2 and 5 in this order to FS(1)
from scroll side, and screw M10 Hex. socket
head bolt along with Hex. nut and Washer.
③Turn Hex. nut and fit G-seal.
ＩＳＰ－５００Ｂ／５００Ｃ
②Insert G-seal to a set of Fixtures 1 and 1-2B,
and fit it to FS(1) from the Fin side.
・Fit Fixtures 2-2 and 5 in this order to FS(1) from
scroll side, and screw M10 Hex. socket head
bolt along with Hex. nut and Washer.
③Turn Hex. nut and fit G-seal.
・Pay attention to directions of Fixture and G-seal.
Side of G-seal where you can see spring faces Shaft Seal (1).
・Check that the top of G-seal is lower than bottom
of tapered section of FS(1).
・If not, tighten further with Fixture again in the same
direction
・Wipe out extruded LOCTITE with clean cloth.
④Fill ISP exclusive grease [0.1ml(0.2g)] between 2 lips of Shaft Seal(1) and G-seal with
syringe evenly around whole periphery.
5.4.6 Fit Bearing set(1)
・Wipe out dust and grease attached to Bearing set(1).
・Turn Inner ring by hand and check that it turns lightly and smoothly.
・If you feel some rumble, replace the Bearing according to 6.3.2.
・Put washer between Bearing Set(1) and FS(1).If not, you cannot rotate the
pump.(only for ISP-250B/250C)
・Fit 3 holes of Bearing set(1) to screw holes on FS(1) side, and tighten by
Hex. socket head bolt with slight amount of LOCTITE 242 or 542.
Tightening torque 2.94±0.3 N･m (30±3kgf･cm)
・Use LOCTITE 242 or 542 (medium strength).
・Apply slight amount of LOCTITE to the thread section.
・Wipe out extruded LOCTITE with clean cloth.
Important
Important

14
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.
Grease volume
［／1 pc.］
ISP-250C ISP-500C
0.05 ml (0.1 g) 0.05 ml (0.1 g)
5.4.8 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(1).
・Internally extruded section near the center of wrap
functions as a stopper to hold Tip Seal.
Completely push sliding material side by hand into
the groove.
5.5 Maintenance of FS(2)
5.5.1 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
Needle Bearing section .
5.5.2 Remove Shaft Seal(2)
Remove the Shaft Seal (2) as follows and replace it
with new one.
・Insert straight edge screwdriver from the Fin side of
FS (2) to Shaft Seal(2), lightly tap handle of
screwdriver and remove Shaft Seal(2) while moving
the screwdriver around the whole periphery Shaft
Seal(2).
・Pay attention not to damage Flange surface of FS(2), scroll section
and Needle Bearing section.
Important
Important
Additional space of
Pin Crank

15
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.
・Blow out the whole unit with air.
②Fully wipe out old grease attached to Needle Bearing in the center of FS(2) with clean cloth
while turning roller until no more comes out.
・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 it is
fragile.
・Always use clean cloth.
Mixing with other grease can greatly deteriorate the performance.
・Pay attention not to leave the waste thread in Bearings.
5.5.4 Fit Shaft Seal (2)
①Apply slight amount of LOCTITE 242 or 542 around outer periphery of new Shaft Seal (2).
ＩＳＰ－２５０Ｂ／２５０Ｃ
②Insert Fixture 7 to Fixture 4 and insert them to
FS(2) from the Fin side.
③Horizontally insert Shaft Seal(2) to Fixture 4.
・Fit Fixtures 6 and 5 in this order to Shaft Seal(2)
from the scroll side. Screw M10 Hex. socket head
bolt along with Hex. nut and Washer from the scroll
side.
ＩＳＰ－５００Ｂ／５００Ｃ
②Insert Fixture 7-2 to a set of Fixtures 4 and 4-2,
and insert them to FS(2) from the Fin side.
③Horizontally insert Shaft Seal(2) to Fixture 4-2.
・Fit Fixtures 6-2 and 5 in this order to Shaft Seal(2).
Screw M10 Hex. socket head bolt along with Hex.
nut and Washer from the scroll side.
④Turn Hex. nut and fit Shaft Seal(2).
・Pay attention to directions of Fixture and Shaft Seal(2).
Side of Shaft Seal(2) where you can see spring faces
Needle Bearing.
・Horizontally place Shaft Seal(2) on the Fixture.
・Check that Shaft Seal(2) is lower than the surface
of FS(2) scroll side.
If not, tightly further again with Fixture in the same
direction. Otherwise, Shaft seal(2) can contact OS.
Important
Important

16
5.5.5 Fit G-seal
ＩＳＰ－２５０Ｂ／２５０Ｃ
①Insert Fixture 7 and new G-seal to Fixture 4.
②Insert Fixture 6 and Fixture 5 in this order to
FS(2) from scroll side.
③Insert G-seal and Fixture 4 with Fixture 7 to
FS(2) from the Fin side, and screw M10 Hex.
socket head bolt along with Hex. nut and Washer
from the opposite side.
ＩＳＰ－５００Ｂ／５００Ｃ
①Insert Fixture 7-2 and new G-seal to a set of
Fixture 4 and Fixture 4-2.
②Insert Fixture 6-2 and Fixture 5 in this order to FS(2)
from scroll side.
③Insert G seal and Fixture 4 along with Fixture 7-2 and
fixture 4-2 to FS(2) from the Fin side, and screw M10
Hex. socket head bolt along with Hex. nut and Washer
from the opposite side.
④Turn Hex. nut and fit G-seal.
・Pay attention to directions of Fixtures and G-seal.
Side of G-seal where you can see spring faces Bearing.
・Check that G-seal is lower than FS(2) Fin side and that is parallel to
Fin surface (not curved).
If not, tighten further again with Fixture in the same direction.
5.5.6 Grease Needle Bearing and Shaft Seal, G-seal
・Fill ISP exclusive grease to roller section of Needle Bearing.
・Apply ISP exclusive grease between roller and cage while
turning roller.
Grease volume
［／1 pc.］
ISP-250B/250C ISP-500B/500C
0.8 ml (1.6 g) 0.85 ml (1.7 g)
・Evenly fill ISP exclusive grease [0.1ml (0.2g)] between 2 lips
of Shaft Seal (2), and also between 2 lips of G-seal.
･ Be sure to use ISP exclusive grease.
･ Be sure to use clean rubber gloves when applying grease to Needle
Bearing.
･ Apply grease a bit more to both roller and cages which are somewhat
worn, different from new Bearing.
あ CAUTION
Be sure to use ISP exclusive grease for Bearings .
※Mixing with other oil can shorten grease lifetime and damage
Bearings.
Use ISP exclusive grease
Important
Important

17
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.
5.6 Maintenance of OS
5.6.1 Remove G-seal
Remove G-seal as follows and replace it with
new one.
・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.
Pay attention not to damage scroll top, bottom and side surfaces of OS
5.6.2 Clean OS
①Wipe out dust in the place where G-seals enter OS 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.
・Blow out the whole unit with air.
②Fully wipe out old grease attached to Needle Bearings and Sleeve in the center of OS
with clean cloth while turning roller until no more comes out.
・If you feel some resistance to remove Tip Seal, be sure to wipe out dust.
・Be sure to clean Tip Seal groove by soft bamboo spatula since it is fragile .
・Always use clean cloth.
Mixing with the other grease can greatly deteriorate the performance.
・Pay attention not to leave the waste thread in Bearings.
③Remove screws of Needle Bearing (Pin Crank)
around OS with cross head screwdriver.
④Remove Plate (ISP-500B/-500C only) and push
Needle Bearing and Seal (ISP-500B/-500C only)
from the opposite side and remove them.
⑤Fully wipe out old grease attached to Needle Bearing
with clean cloth while turning roller until no more
comes out.
・If you replace Pin Crank set in 5.3.3, replace Needle
Bearings also.
Pay attention not to damage cross section of screw to fix Needle
Bearing.
Use small cross head screwdriver (for M3).
Important
Important
Important