Anest Iwata ISP-250C Series User manual

.
Instruction Manual (Original Instructions)
Oil-free Scroll Vacuum Pump
ISP-250C
ISP-500C
※ Before use, be sure to fill in the blank spaces below for future repair an after-service.
Serial No.
Who sol it to you
Purchase ate
When you began
operation
This instruction manual inclu es very important warnings, cautions an
operating
proce ure in or er to operate this pump safely an efficiently.
Be sure to rea this instruction manual thoroughly an fully un erstan before
operation.
After rea ing it, store it in a convenient place for imme iate an future rea ing.
LR104996
Our product have got CSA approval.
(Cana ian Stan ar s Association)

-1-
Important information
Be sure to rea this instruction manual to un erstan how to operate equipment
correctly. Only operators, who fully un erstan warnings, cautions an instructions,
are to operate the equipment. Improper operation (mishan ling) can cause serious
bo ily injury, eath, fire or explosion.
Store this manual in a convenient place for imme iate an future reference.
◆ Regar ing safety
・ The safety instructions given in this manual are the minimum operating requirements.
Follow all national or municipal laws an regulations pertaining to fire, electricity, an
other safety regulations, as well as corporate regulations.
・ Pay special attention to items which are shown by the below marks an symbols.
・ Symbols an marks have the following meanings.
Examples of marks
WARNING
In icates a potentially hazar ous situation which, if not
avoi e , may result in serious injury or loss of life.
CAUTION
In icates a potentially hazar ous situation which, if not
avoi e , may result in minor or mo erate injury or property
amage.
Examples of symbols
In icates [Beware]. We will explain briefly in or near the symbol.
(The example on the left is [Beware of electric shock]).
In icates [Prohibite action]. We will explain briefly in or near the symbol.
(The example on the left is [Do not touch]).
In icates [Require action]. We will explain briefly in or near the symbol.
(The example on the left is [Be sure to groun ]).
＊ We shall not be responsible for any injury or amage cause by isregar of
warnings, cautions or instructions.
Supplementary notes
Important
In icates notes which we ask you to observe. They are helpful to
achieve full performance an functionality of the equipment.

-2-
or safe operation
Below is very important information about how to safely operate the equipment.
Before operation, be sure to rea an fully un erstan the contents.
WARNING
Be careful about
lifting
Danger of cargo collapse
Be careful to install vacuum pump using
motor han le (ISP-250C mass
25kgs/1-phase, 23kgs/3-phase), or using
motor eyebolt an crane with sufficient
allowable loa capacity (ISP-500C mass
44kgs/1-phase, 38kgs/3-phase) while
paying attention to stability of suspen e
loa . If not, it can cause amage, failure
or bo ily injury from falling cargo ue to
hoisting failure, or by being caught
between suspen e cargo an other
material.
Avoid moisture
Danger of electric shock
Install in an area which is not expose to
moisture such as rain or steam. If moisture
comes into an tact with the electric
source connection, it can cause fire or
bo ily injury ue to short-circuit or electric
shock.
Install at a safe
site
Danger of explosion, fire and
accident
Install in an area free from explosive,
flammable or corrosive substances.
If not, it can cause explosion, fire or
acci ent.
Ask qualified
electrician
Danger of short-circuit and
electric shock
Ask a qualifie electrician to perform
electric wiring.
If not, short-circuit or electric shock can
cause fire or bo ily injury.
Turn off electric
source
Danger of electric shock and
entanglement
Be sure to turn off electric source on
buil ing site before wiring. If not, it can
cause electric shock or bo ily injury ue to
turning objects.
Install
overcurrent
protective device
Danger of accident, fire and
failure
Be sure to install protective evice to
protect circuitry.
We recommen overcurrent protective
evice (rate 15A for ISP-250C an rate
15A for ISP-500C (rate 20A
100/115V/1phase)) to protect branch
circuit.
If equipment is not stoppe in an
emergency, it can cause acci ent, fire or
failure.
Install
emergency stop
switch
Danger of accident, fire or failure
Be sure to install an electric source
emergency stop switch (or protective
evice that can urgently stop).
If equipment is not stoppe in an
emergency, it can cause acci ent, fire or
failure.
Install short
circuit protective
device
Danger of fire and electric shock
Install short circuit protective evice.
If not, it can cause bo ily injury ue to fire
or electric shock.
Install motor
protective circuit
breaker to
protect motor
Danger of electric fire and electric
shock
Install motor protective circuit breaker to
protect motor.
If not, it can cause bo ily injury ue to
electric fire or electric shock.
If you have any questions about the
selection of protective evices, contact
either the ealer who sol it to you or us.
Be careful about
wiring
Danger of short-circuit and
electric shock
We recommen an electric source cable
of more than 2mm
2
(more than rate
10A/1phase, 7A/3phase for ISP-250C an
more than rate 18A/1phase, 15A/3phase
for ISP-500C) cross section area for
electric source cable an groun cable. Be
careful to avoi voltage rop consi ering
local situation.
If not, it can cause a short-circuit fire an
may result in bo ily injury from electric
shock.

-3-
or safe operation
WARNING
Use crimp-style
terminal
Danger of short-circuit and
electric shock
Fit firmly proper roun type crimp-style
terminal to electric source cable using
crimp tool an connect to motor terminal
section.
If not, it can cause short-circuit fire or
bo ily injury from electric shock ue to
looseness or isconnection.
Protect cable
from being
pulled
Danger of short-circuit and
electric shock
Be sure to fit cable-glan to hole of
φ 20mm at motor terminal box.
If not, it can cause short-circuit fire or
bo ily injury from electric shock.
Be sure to
ground
Danger of electric shock
Connect groun cable to groun terminal
in motor terminal box.
If not, it can cause bo ily injury from
electric shock.
Never evacuate
hazardous gas
Danger of explosion and ignition
Do not evacuate gas which is hazar ous
to humans or explosive, flammable, or
corrosive. Do not evacuate with
substances containing chemicals,
solvents, an pow ers.
If one, it can cause failure or bo ily
injury by gas, explosion or ignition.
Avoid foreign
matter
Danger of entanglement and
foreign matter dispersal
Never put finger or foreign matter into air
hole of fan cover, air hole of motor or
clearance between FS(1) an FS(2)
cooling fins.
If one, it can cause bo ily injury from
entanglement with turning section, or
foreign matter ispersal
.
Never alter
Danger of electric shock and
entanglement
Do not remove or alter safeguar s or
insulation parts.
If one, it can cause bo ily injury from
electric shock or turning section an it
can cause eteriorate performance an
operating lifetime, an invali ate
guarantee.
Change after
vacuum pump is
stopped
Danger of failure and bodily injury
Change air-flush port only after vacuum
pump is stoppe . If you change it uring
vacuum pump operation, it can cause
vacuum pump failure an bo ily injury.
Conduct
periodical
maintenance and
inspection
Danger of failure and bodily injury
Con uct perio ical maintenance an
inspection.
If not, it can cause insufficient
performance, failure of vacuum pump, an
bo ily injury.
Be careful about
high temperature
Danger of burns
Con uct maintenance an inspection only
after vacuum pump becomes cool enough.
Maintenance an inspection soon after
vacuum pump stops can cause burn injury.
Turn off electric
source
Danger of electric shock
Be sure to con uct maintenance an
inspection after you turn off electric
source. If not, it can cause bo ily injury
from electric shock or turning object.
Ask specialist to
perform repairs
Danger of accident, failure and
shorter operating lifetime
Ask specialist to perform repairs.
Defective repairs can cause acci ent,
failure or shorter operating lifetime.
With a thermal
protector
[Only
single-phase
motor]
Danger of restart
Be sure to switch off electric source before
maintenance or inspection.
Single-phase motor has a thermal
protector.
Vacuum pump restarts become cool
without warning after vacuum pump.

-4-
or safe operation
CAUTION
Use at
designated
temperature
Danger of overheating
Operate at ambient temperature of 5 ℃～
40 ℃ .
Operating at a temperature range other
than that esignate can cause acci ent,
failure or bo ily injury such as burns ue to
overheating.
Pay at te nti on
to
ve nti l a tion
Danger of overheating
Install in a well-ventilate area. Poor ventilation
can isrupt cooling an cause acci ent, failure or
bo ily injury such as burns since this vacuum
pump is an air-coole type.
Avo i d du s t
Danger of dust
Be sure site is free from ust.
Sucking in of ust can cause failure.
Ins t a l l o n a
sol i d , le ve l
floo r
Danger of unbalance
Be sure to install on soli an level floor (less than
5° inclination).
Uneven installation can cause failure an
movement of vacuum pump. If installation floor is
unstable, fix pump base with 4-φ11 holes of pump
leg (ISP-250C) or 4-M10 tap section pump base
(ISP-500C).
Avo i d di r e c t
sun l i g ht
Danger of overheating
Install where equipment is not expose to
irect sunlight.
Vacuum pump expose to irect sunlight
can overheat, resulting in failure.
Check voltage
Motor burnout
Before oing any wiring, check electric source an
voltage. Single-phase is a multi voltage type of
AC100V/AC200V. Three-phase is a multi voltage
type of AC200V/AC400V. Voltage can be change
at terminal block. This pump is wire to 200V
when elivere to you. Check your electric source,
voltage, an wire correctly to terminal block.
Improper wiring an incorrect voltage can cause
motor burnout.
Inspect cause of
problem
Danger of problem recurrence
and failure
If protective evice or thermal protector
activates, be sure to turn off electric
source an inspect causes to solve the
problem. Do not operate until problem is
solve . Operation while problem is left
unsolve can cause problem recurrence
an failure.
Remove blank
flange
Danger of exhaust disruption
Remove blank flange from inlet an outlet.
Operation with blank flange being fitte can isrupt
exhaust or cause blank flange to fly by exhaust
impetus, resulting in acci ent, failure, or bo ily
injury from contact with flying objects.
Prevent foreign
matter from
entering
Danger of foreign matter entering
inlet
When checking turning irection, be
careful not to enter foreign matter into an
inlet. Foreign matter entering inlet can
cause failure.
Pay attention to
exhaust
resistance
Danger of exhaust disruption
When connecting exhaust piping to vacuum pump
an when combining piping with another vacuum
pump, pay attention to piping size an length so
that it oes not cause exhaust resistance. Exhaust
resistance can isrupt air flow, resulting in failure
an over-current.
Start or stop
after closing
isolation valve
Danger of vacuum break and
pollution
Be sure to close isolation valve between
vacuum pump an vacuum system
(chamber) uring startup an stop.
Start-up or stop with isolation valve in the
open position can raw back gas an
ebris attache to insi e of pump to
vacuum chamber ue to pressure
ifferential, resulting in vacuum break an
pollution on vacuum chamber si e.
Open a i r
inl e t
Danger of abnormal sound and failure
Open inlet to atmosphere for about 5 secon s
before restarting vacuum pump.
If not, it can unbalance temperature insi e vacuum
pump, resulting in failure.

-5-
or safe operation
CAUTION
Bew are
tem p e r a ture
of i n t a ke g a s
Danger of exceeding permissible
temperature of intake gas
If intake gas temperature is over 50 ℃ , be
sure to install a chiller or trap between
vacuum pump an vacuum chamber so
that gas intake temperature of vacuum
pump keeps below 50 ℃ . If not, vacuum
pump temperature can increase, resulting
in failure.
Caution after
exhausting vapor
Danger of insufficient vapor
exhaust
After evacuating vapor, o air-flush
operation for at least one hour. If you close
air-flush port or stop vacuum pump soon
after evacuating vapor, con ense water
will remain insi e vacuum pump which will
cause failure.
Beware of intake
gas volume
Danger of exceeding permissible
intake gas volume
When sen ing N
2
gas or ry air into
air-flush port, pressure shoul be the
same as atmospheric pressure an flow
rate shoul be less than 10NL/min. If not,
it can increase pressure insi e vacuum
pump, resulting in failure.
Operate while
opening air-flush
port
Danger of remaining moisture
When evacuating moisture, be sure to
open air-flush port (air-flush operation). If
you evacuate vapor while air-flush port is
close , con ense moisture will remain
insi e vacuum pump an cause failure.

-6-
Where to attach warning stickers
Where to attach warning stickers
Always keep warning stickers clean an legible. If they become irty or etache ,
replace them with new ones. If you nee replacement stickers, contact the ealer
who sol the vacuum pump to you.
Hour Counter cover
Beware of electric shock
Protection cover
Con enser cover
Protection cover
Beware of electric shock
Hour Counter cover
Protection cover
Beware of electric shock
Hour Counter cover
Con enser cover
Hour Counter cover
Protection cover
Beware of electric shock
ISP-250C
Single-phase
ISP-250C
Three-phase
ISP-500C
Single-phase
ISP-500C
Three-phase

-7-
Contents
Important information .............................................................................................................1
or safe operation ...................................................................................................................2
Contents .......................................................................................................................................7
1. Before use................................................................................................................................8
1.1 Check the product.............................................................................................................8
2. Name and structure of each section...................................................................................11
3. Installation..............................................................................................................................12
3.1 Wiring................................................................................................................................13
3.2 Test operation..................................................................................................................17
3.3 Connection to vacuum system (chamber) ...................................................................18
4. Operation................................................................................................................................19
4.1 Standard operation..........................................................................................................21
4.1.1 Start-up ......................................................................................................................21
4.1.2 Shut-down .................................................................................................................21
4.2 Air-flush operation...........................................................................................................22
4.2.1 Preparation ................................................................................................................22
4.2.2 Startup and shut-down ............................................................................................23
4.2.3 When returning to standard operation...................................................................23
5. Maintenance and inspection................................................................................................25
5.1 Daily maintenance and inspection ................................................................................25
5.2 Maintenance.....................................................................................................................26
6. Problems and remedies .......................................................................................................27
7. Disposal..................................................................................................................................27
8. Specifications ........................................................................................................................28
8.1 Specifications ..................................................................................................................28
8.1.1 ISP-250C.....................................................................................................................28
8.1.2 ISP-500C.....................................................................................................................29
8.2 Dimensions ......................................................................................................................30
8.2.1 ISP-250C.....................................................................................................................30
8.2.2 ISP-500C.....................................................................................................................30
8.3 Performance data ............................................................................................................31

-8-
ＩＳＰ－５００Ｃ－ＴＨ ＩＳＰ－５００Ｃ－ＴＶ ＩＳＰ－２５０Ｃ－ＴＶ
ＩＳＰ－５００Ｃ－ＳＨ ＩＳＰ－５００Ｃ－ＳＶ ＩＳＰ－２５０Ｃ－ＳＶ
1. Before use
1.1 Check the product
・
・・
・ Check that the package is right-side-up before opening.
・
・・
・ Check that the model of the product is the same as the one you ordered.
How to read model name
I S P – 2 5 0 C – S V
I S P – 5 0 0 C – T H
・
・・
・ Check that there is no damage.
If there is any amage, contact either the ealer who sol it to you or us.
・
・・
・ Check the following accessories.
Instruction manual (this one)
Air-muffler for air-flush
(ISP-250C is attache to han le of motor. ISP-500C is attache to eyebolt of
motor.)
Inlet irection
H
： horizontal
V
： vertical
ISP ： mo el
Motor
S
： Single phase
T
： Three phase
Displacement (swept volume)
250C
： 250 L/min at 50Hz Motor
500C
： 500 L/min at 50Hz Motor

-9-
Vinyl bag
(Air muffler is containe insi e)
・ ISP-250C
・ ISP-500C
※ Please prepare electric source cor s, crimp-style terminal, protective evices,
piping to inlet, an piping from outlet on customer si e.
Year of manufacture
Serial number
○○ ○○○
Alphabetic Numeric
Serial number
○○ ○○○
Alphabetic Numeric
Vinyl bag
(Air muffler is containe insi e)
Year of manufacture

-10-
Open package
WARNING
Danger of cargo collapse
Be careful to install vacuum pump using motor handle (ISP-250C mass
25kgs/1-phase, 23kgs/3-phase), or using motor eyebolt and crane with sufficient
allowable load capacity (ISP-500C mass 44kgs/1-phase, 38kgs/3-phase) while
paying attention to stability of suspended load.
If not, it can cause amage, failure or bo ily injury from falling cargo ue to hoisting
failure, or by being caught between suspen e cargo an other material.
Be careful about
lifting
Box
Base
Oil-free Scroll Vacuum Pump
Upper Cover
Instruction Manual

-11-
Hour Counter
Fan Cover
Motor
Turning Direction Plate
Inlet
NW25
Outlet NW
16
Air Flush Port
(Rc 1/8)
Han le
Hour Counter
Fan Cover
Motor Base
Motor
Turning Direction Plate
Air Flush Port
(Rc 1/8)
IN Plate
OUT Plate
Outlet NW
25
Eye
bol
t
Inlet
NW40
2. Name and structure of each section
・
ISP-250C
・
ISP-500C

-12-
Structure of vacuum pump
3. Installation
WARNING
Danger of electric shock
Install in an area which is not exposed to moisture such as rain or steam.
If moisture comes into an tact with the electric source connection, it can cause fire or
bo ily injury ue to short-circuit or electric shock.
Avoid moisture
Danger of explosion, fire or accident
Install in an area free from explosive, flammable or corrosive substances.
If not, it can cause explosion, fire or acci ent.
Install at a safe site
CAUTION
Danger of overheating
Operate at ambient temperature of 5
℃
℃℃
℃～
～～
～ 40 ℃
℃℃
℃ .
Operating at a temperature range other than that esignate can cause acci ent, failure
or bo ily injury such as burns ue to overheating.
Use at designated
temperature
Danger of overheating
Install in a well-ventilated area (refer to below chart).
Poor ventilation can isrupt cooling an cause acci ent, failure or bo ily injury such as
burns since this vacuum pump is an air-coole type.
Necessary ventilated air volume
ISP-250C ISP-500C
Over 4 m
3
/min Over 8 m
3
/min
Pay att e n t ion t o
ve nti l a tion
Fixe Scroll FS(1)
Fixe Scroll FS(2)
Orbiting Scroll OS
Cooling Fan Cooling Fan

-13-
Danger of dust
Be sure site is free from dust.
Sucking in of ust can cause failure.
Avo i d du s t
Danger of unbalance
Be sure to install on solid and level floor (less than 5° inclination).
Uneven installation can cause failure an movement of vacuum pump. If installation
floor is unstable, fix pump base with 4-
φ 11 holes of pump leg (ISP-250C) or 4-M10 tap
section pump base (ISP-500C).
Ins t a l l o n a
sol i d , le ve l flo o r
Danger of overheating
Install where equipment is not exposed to direct sunlight.
Vacuum pump expose to irect sunlight can overheat, resulting in failure.
Avo i d di r e c t
sun l i g ht
Important
When buil ing vacuum pump into vacuum system, pay attention to space for maintenance,
ambient temperature an piping.
If you have any questions, contact the ealer who sol it to you or us.
3.1 Wiring
WARNING
Danger of short-circuit and electric shock
Ask a qualified electrician to perform electric wiring.
If not, short-circuit or electric shock can cause fire or bo ily injury.
Ask qualified
electrician
Danger of electric shock and entanglement
Be sure to turn off electric source on building site before wiring.
If not, it can cause electric shock or bo ily injury ue to turning objects.
Turn off electric
source
Danger of accident, fire and failure
Be sure to install protective device to protect circuitry. We recommend
overcurrent protective device (rated 15A for ISP-250C and rated 15A for ISP-500C
(rated 20A 100/115V/1phase)) to protect branch circuit.
If equipment is not stoppe in an emergency, it can cause acci ent, fire or failure.
Install overcurrent
protective device
Danger of accident, fire or failure
Be sure to install an electric source emergency stop switch (or protective device
that can urgently stop).
If equipment is not stoppe in an emergency, it can cause acci ent, fire or failure.
Install emergency
stop switch
Danger of fire and electric shock
Install short circuit protective device.
If not, it can cause bo ily injury ue to fire or electric shock.
Install short circuit
protective device
less than 5°
inclination
M10 tap section

-14-
Danger of electric fire and electric shock (refer to chart 1 on page 15)
Install motor protective circuit breaker to protect motor.
If not, bo ily injury ue to electric fire or electric shock can result.
If you have any questions about the selection of protective evices, contact either the
ealer who sol it to you or us.
Install motor
protective circuit
breaker to protect
motor
Danger of short-circuit and electric shock
We recommend an electric source cable of more than 2mm
2
(more than rated
10A/1phase, 7A/3phase for ISP-250C and more than rated 18A/1phase,
15A/3phase for ISP-500C) cross section area for electric source cable and ground
cable.
Be careful to avoid voltage drop considering local situation.
If not, it can cause a short-circuit fire an may result in bo ily injury from electric shock.
Be careful about
wiring
Danger of short-circuit and electric shock
it firmly proper round type crimp-style terminal to electric source cable using
crimp tool and connect to motor terminal section.
If not, it can cause short-circuit fire or bo ily injury from electric shock ue to looseness
or isconnection.
Use crimp-style
terminal
Danger of short-circuit and electric shock
Be sure to fit cable-gland to hole of φ
φφ
φ 20mm at motor terminal box.
If not, it can cause short-circuit fire or bo ily injury from electric shock.
Protect cable from
being pulled
Danger of electric shock
Connect ground cable to ground terminal in motor terminal box.
If not, it can cause bo ily injury from electric shock.
Be sure to ground
Danger of restart
Be sure to switch off electric source before maintenance or inspection.
Single-phase motor has a thermal protector. .
Vacuum pump restarts become cool without warning after vacuum pump.
With a thermal
protector
[Only single-phase
motor]
CSA Requirement
3 phase motor not protecte － external protection in accor ance with CE co e, part 1, must be provi e .
Min. circuit ampacity of con uctor is
ISP-250C － 1phase 10A /3phase 7A 、 ISP-500C － 1phase 18A /3phase 15A
Max. branch circuit breaker is
ISP-250C
－ 15A 、 ISP-500C － 15A (1phase 100/115V is 20A)
When you used this pump in Europe.
This vacuum pump must be equippe with a main isconnect evice in accor ance with requirements of
EN60204-1, clause 5.3.2. It is recommen e to use a circuit breaker as main breaker which is suitable for
isolation accor ing to EN60947-2 an is equippe with an operating han le which is lockable in OFF position
an complies with the other requirements of EN60204-1, clause 5.3.
CAUTION
Motor burnout
Before doing any wiring, check electric source and voltage.
Single-phase is a multi voltage type of AC100V/AC200V. Three-phase is a multi
voltage type of AC200V/AC400V.
Voltage can be changed at terminal block.
This pump is wired to 200V when delivered to you.
Check your electric source, voltage, and wire correctly to terminal block.
Improper wiring an incorrect voltage can cause motor burnout.
Check voltage

-15-
Use roun type terminal.
Activate the emergency stop by electric source
switch or protective evice.
Avoi motor burnout by protective evice (chart 1).
Use rate electric source cable an groun cable.
over rate 10A/1-phase, 7A/3-phase for ISP-250C
over rate 18A/1-phase, 15A/3-phase for ISP-500C
Fit cable-glan .
Connect groun cor to groun terminal.
Danger of problem recurrence and failure
If protective device or thermal protector activates, be sure to turn off electric
source and inspect causes to solve the problem.
Do not operate until problem is solved.
Operation while problem is left unsolve can cause problem recurrence an failure.
Inspect cause of
problem
This shows three-phase 200V connection for ISP-500C.
Chart-1
Single-phase specifications Three-phase specifications
Recommen e
protective evice (or
breaker) capacity
A
Recommen e
protective evice (or
breaker) capacity
A
Voltage
V
Frequency
Hz
ISP-250C ISP-500C
Voltage
V
Frequency
Hz
ISP-250C ISP-500C
100 50 6.0 10.7 200 50 1.8 3.1
100 60 6.0 12.5 200 60 2.2 3.2
115 60 5.4 10.8 208 60 2.2 3.0
200 50 3.0 5.4 230 60 2.2 2.9
200 60 3.2 6.0 380 50 1.1 1.8
230 50 2.7 4.9 400 50 1.1 1.8
230 60 2.7 5.0 415 50 1.2 1.9
460 60 1.2 1.7
Cable-glan
Groun Terminal
M5 Bolt
Electric Source
M4 Nut

-16-
Terminal plate (2pcs)
Terminal Block
Electric Source
Terminal M4 Nut
Groun Terminal
M5 Bolt
200V Connection
(When elivere to you)
100V Connection
How to wire
① Remove 4pcs. of M5 bolt at motor terminal box an remove protection cover.
※ Be careful not to lose remove M5 bolts an washer.
② Wiring iagram is shown insi e protection cover.
Single-phase specifications
You can change to a 100V or 200V connection by changing terminal plate (2pcs.).
※
※※
※ It is wired to 200V when delivered to you.
If you want to change to a 100V connection, remove M4 nut of electric source
terminal an change terminal plate as illustrate below.
Insert electric source cor through cable-glan on the right si e of terminal box.
Three-phase specifications
You can change to a 200V or 400V connection by changing terminal plate (3pcs.).
※
※※
※ It is wired to 200V when delivered to you.
If you want to change to a 400V connection, remove M4 nut of electric source
terminal an change terminal plate as illustrate below.
Insert electric source cor through cable-glan on the bottom si e of terminal box.
Connect each phase L1-L2-L3 to each electric source terminal respectively in
accor ance with the below wiring iagram.
Terminal plate
Terminal Block
Electric Source
Terminal M4 Nut
Groun Terminal
M5 Bolt
200V Connection
(When elivere to you)
400V Connection

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3.2 Test operation
CAUTION
Danger of exhaust disruption
Remove blank flange from inlet and outlet.
Operation with blank flange being fitte can isrupt air flow or cause blank flange to fly
by exhaust impetus, resulting in acci ent, failure, or bo ily injury from contact with flying
objects.
Remove blank
flange
Danger of foreign matter entering inlet
When checking turning direction, be careful not to enter foreign matter into an
inlet. oreign matter entering inlet can cause failure.
Prevent foreign
matter from entering
Test operation
① Open inlet an outlet
Remove blank flanges (2 places)
from inlet an outlet of
vacuum pump.
② Check turning irection
Open inlet, turn on electrical source
to start operating vacuum pump.
Vacuum pump turns clockwise
when viewe from motor si e.
Check that comes out of air outlet.
If air oes not come out from outlet, vacuum pump of three-phase motor may turn
in reverse.
In that case, stop vacuum pump, turn off main electrical source an change 2 out
of 3 wires of electric source connection an change turning irection to correct one.
If you fit pump to vacuum system an control operation of vacuum pump by
O-ring
Clamp
Blank Flange
Turning
Turning Direction plate

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remote control, first check pump itself for turning direction an then fit it to
vacuum system.
Important
Vacuum pump turns clockwise when viewed from motor side.
If pump turns counter-clockwise, stop vacuum pump, turn off electrical source an change 2 out of 3 wires of
electrical source connection.
3.3 Connection to vacuum system (chamber)
・ Inlet of ISP-250C is NW25 an outlet is NW16.
・ Inlet of ISP-500C is NW40 an outlet is NW25.
CAUTION
Danger of exhaust disruption
When connecting exhaust piping to vacuum pump and when combining piping
with another vacuum pump, pay attention to piping size and length so that it does
not cause exhaust resistance.
Exhaust resistance can isrupt air flow, resulting in failure an over-current.
Pay attention to
exhaust resistance
Important
Use isolation valve between vacuum system and inlet.
Isolation valve is necessary to prevent the rawback of ebris attache to the insi e of vacuum pump into the
vacuum chamber uring start-up an shut- own. (We recommen the use of leak valve also). We recommen
the use of an
automatic valve as the isolation valve which closes during power failure in order to prevent
the drawback of debris inside pump into the vacuum chamber during power failure.
Use the clean connecting pipe between vacuum chamber and vacuum pump.
We recommen the use of a flexible tube between inlet of vacuum pump an vacuum chamber so that vibration
of pump oes not transmit to vacuum chamber.
When connecting exhaust piping to outlet of vacuum pump, refer to the following size and length.
・ It is recommen e in the case of ISP-250C, max. 5m irect pipe length for exhaust pipe size NW16 (inner dia.16)
・ It is recommen e in the case of ISP-500C, max. 15m irect pipe length for exhaust pipe size NW25 (inner
dia.25)
But if pipe length becomes longer, use a larger size exhaust pipe.
Make sure that exhaust piping is not clogged during pump operation.
Make sure that pressure at outlet oes not excee atmospheric pressure at any con itions.
Chamber
Isolation valve
(Automatic valve)
Leak
valve
Vacuum pump
Outlet duct
Inlet Outlet
ISP-250C
ISP-500C