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.