Teral VFZ Series User manual

Instruction Manual
VACUUM PUMP
VFZ Standard Model Series
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CAUTION
x Read the instruction manual carefully before you install, put into operation and maintain the Vacuum Pump
and handle it properly.
x For the sake of safety, never modify the Vacuum Pump.
We take no responsibility for the troubles caused by repairing or modifying the product.
x Hand over this instruction manual surely to the end users, who actually install, operate and maintain the
Vacuum Pump.
x After having read the instruction manual, keep it at the place, where can be accessed by the persons, who
use it.
x The specification of the product may be changed without prior notification.
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1
Caution
Introduction ---------------------------------------------------------------------
Thank you for your purchasing of the Vacuum Pump.
It is required for the Vacuum Pump for give full play to its performance, for preventing troubles from
occurring and for continuing its satisfactory operation for a long period not only to maintain and inspect
it after putting it into service but also to handle it properly in every stage after its delivery until its actual
operation.
This instruction manual illustrates the essential items for handling the Vacuum Pump.
If you find any question, please inquire of our special agent, dealer or business office about it.
Cautions for safety -----------------------------------------------------------
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x Read this instruction manual and the other attached documents carefully before you use (install,
transport, maintain, inspect etc.) the Vacuum Pump and then use it properly. Acquire first the
machine knowledge, safety information and all caution items and use the machine.
Keep this instruction manual at the place, where can be accessed by the persons, who use it.
x The ranks for safety items are classified into alarms and cautions and described in this instruction
manual.
Alarm 䋺those items, for which the possibility of human 㩷DEATH and
HEAVY INJURY are feared, if they are mishandles.

Caution 䋺those items, for which hazardous condition may occur 㩷and
MEDIUM HAZARD and 㩷SLIGHT INJURY are feared and/or
material damage are feared, if they are mishandles.
Even those items marked with
㩷
may lead to serious results depending upon the
situation.
As every item describes serious contents, be sure to keep it always.
Furthermore, the following symbols are applied according to necessity in this instruction manual, so
that the essential points of indication can be grasped at a glance.
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Symbol Meaning Symbol Meaning
Notification of a general
prohibition
Do not touch!
Always connect a
protective earthing
terminal!
Take care of ignition!
Take care of an electrical
shock!
Take care of a high
temperature!

2
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Alarm
General
x The works of transport, installation, piping, wiring, operation, control, maintenance
and inspection may only be executed by the experts, who are well skilled of
handling the Vacuum Pumps. Otherwise, an ELECTRIC SHOCK, an INJURY or a
FIRE is feared.㩷
x Hot line works are forbidden. Work always with the power supply switched off.
Otherwise, an ELECTRIC SHOCK or a FIRE is feared.
x Do not use the Vacuum Pump in an explosive atmosphere.
Otherwise, an INJURY or a FIRE is feared.㩷
Installation,
Adjustment
x Ground the protective earthing terminal surely. Otherwise, an ELECTRIC SHOCK
or a FIRE is feared.
x In the Vacuum Pump is used as mounted on a ceiling or a wall, its fall is feared
depending on its mounting condition. Observe the catalog or instruction manual for
the details of usable range. An INJURY due to a FIRE is feared.㩷
Piping,
Wiring
x Connect it to the power supply cable according to the wiring diagram within terminal
box and the instruction manual. An ELECTRIC SHOCK or a FIRE due to incorrect
connection is feared.
x Use it always at the voltage and frequency indicated in the nameplate on its main
body. A BURNOUT or a FIRE is feared.
x Do not bend, stretch or pinch the power supply cable and the lead wire for the
Vacuum Pump by force. An ELECTRIC SHOCK or a FIRE is feared.
x Restore the cover for terminal box to the original position after completion of every
work. Otherwise, an ELECTRIC SHOCK is feared.
x Dismount the emblem for middle bracket surely before installing the main body.
Otherwise, a BURN or an INJURY is feared.
Operation
x Never access or touch any rotating body (cooling fan etc.) during running. A
CATCH-IN on an INJURY is feared.
x Switch off the power supply always in case of power failure. An INJURY is feared
due to sudden work of the machine at restoration of power supply.
x Switch off the power supply always when the Vacuum Pump is stopped because the
protection unit belonging to it worked. An INJURY is feared due to sudden work of
Vacuum Pump at recovery of the protection unit.㩷
Caution
General
x Do not use the Vacuum Pump out of the specifications described in the nameplate,
catalog and instruction manual. An ELECTRIC SHOCK, an INJURY or a DAMAGE
is feared.
x Do not use the damaged Vacuum Pump. An ELECTRIC SHOCK, an INJURY or a
FIRE is feared.
x Do not insert any foreign material or finger into the opening (opening in fan cover,
admission and discharge ports) of Vacuum Pump. An ELECTRIC SHOCK an
INJURY or DAMAGE is feared.
x We take no responsibility for modification by the customer, as they are out of the
scope of our responsibility.㩷

3
Caution
Transportation
x Take full care of fall and tumbling down during transportation. An INJURY is feared.
x Lift up the Vacuum Pump equipped with a hanger bolt always after getting rid of
loosening of the hanger bolt. But after mounting the Vacuum Pump on a machine,
do not lift up the entire machine using the mounted hanger bolt.
Verify the mass of motor based in the nameplate, package box, outline drawing,
catalog or the like before lifting it and do not lift any more mass than the rated load
of lifting tool. The gravity center of the Vacuum Pump is located at motor side,
therefore, the Vacuum Pump inclines to one side during lift-up.
Exert tension gradually on the wire and do not lift up suddenly.
This lift-up work may only be executed by the qualified workers. Do not stay under
the Vacuum Pump during the lifting work.
An INJURY or FIRE caused by FALL or TUMBLING DOWN is feared for all of
these cases㪅㩷
x Ambient temperature should be kept –20㷄䌾+60㷄during transportation.
Opening the
Package
x Open the package after verifying the top and bottom of product. An INJURY is
feared.
x Open the wooden frame package taking care of the used nails. Wear glove when
opening the wooden package. An INJURY is feared.
x Verify if the product is just the ordered one. An INJURY,DAMAGE or a FIRE due to
use of the incorrect product is feared.
Installation,
Adjustment
x Never place any inflammable material around the Vacuum Pump. A FIRE is feared.
x Do not place any obstacle against ventilation around the Vacuum Pump. A BURN or
aFIRE caused by abnormal heating due to disturbed cooling is feared.
x Fasten the foundation bolts surely.
Insufficient fastening may cause an INJURY and DAMAGE due to shift of the
Vacuum Pump.
x Never get on or hang on the Vacuum Pump. An INJURY is feared.
x Vacuum Pump shell be always mounted on suitable place in order to see its
nameplate easily and do not put any obstacle in front of it.
Do not dismount the nameplate.
Piping,
Wiring
x Construct the piping and wiring according to the technical standard for electrical
equipment and the internal wiring provisions. A BURNOUT or a FIRE is feared.
x For wiring to the terminal base in terminal box, fasten the terminal screws with a
torque of 1.0 to 1.3 N࡮m. Otherwise, DAMAGE of the terminal box is feared.
x For measuring the insulation resistance, do not touch the terminal. An ELECTRIC
SHOCK is feared.
x No protection unit belongs to the Vacuum Pump except for some models. The
installing of overcurrent protection unit is obliged based upon the technical standard
for electrical equipment. For preventing a FIRE and DAMAGE due to a motor
burnout, we recommend to install the protection unit other then overcurrent
protection units (including a ground fault interrupter) based upon consulting with us.
Operation
x If any abnormality occurs, stop the operation immediately and switch off the power
supply. An ELECTRIC SHOCK an INJURY or a FIRE is feared.
x The Vacuum Pump becomes considerably hot during its operation. Take care not to
touch it by your hand or body. A BURN is feared.
x Do not insert your finger or any others material into the opening of Vacuum Pump.
An ELECTRIC SHOCK an INJURY or FIRE is feared.㩷
x Wear stopples during operation to shut the big noise.㩷

4
Caution
Maintenance,
Inspection
x Do not touch the terminal for measuring the insulation resistance. An ELECTRIC
SHOCK is feared.
x The Vacuum Pump becomes considerably hot during its operation. Take care not to
touch by your finger and body. A BURN is feared.
x Take care, if you use a solvent or the like for cleaning the Vacuum Pump. A
POISONING is feared. Further, the use of thinner or benzene may cause
discoloring or exfoliation of coating on the Vacuum Pump.
Disassembly,
Repair,
Modification
x The repair, disassembling and modification shall be executed only by experts. An
INJURY due to the edge of Impeller or key groove, an ELECTRIC SHOCK or a
FIRE is feared.
Disposal x Handle the Vacuum Pump as a general industrial waste, when it is be disposed.
Package Opening and Product Verification ----------------------------
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When the Vacuum Pump has been delivered, verify the following points.
Caution㩷
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1. Verify the top and the bottom of product and open the package.
Otherwise, an INJURY is feared.
2. Open the wooden frame package taking care of the used nails. Wear glove when
opening the wooden package. An INJURY is feared.
3. Verify if the delivered product is just the ordered one.
䋨Check the output voltage, frequency, model etc. with the description on face plate.䋩
An INJURY,DAMAGE or a FIRE is feared, if an incorrect product is used.
4. Verify if any part is damaged and if any bolt or nut is loosened during the transport.

5
Move hanger bolt
Transport -------------------------------------------------------------------------
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Take care of the following points for transporting the Vacuum Pump.
Caution
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1. Take full care of fall and tumbling down during transportation. An INJURY is feared.
2. Lift up the Vacuum Pump equipped with a hanger bolt always after getting rid of
loosening of the hanger bolt. But after mounting the Vacuum Pump on a machine, do
not lift up the entire machine using the mounted hanger bolt.
Verify the mass of motor based in the nameplate, package box, outline drawing,
catalog or the like before lifting it and do not lift any more mass than the rated load of
lifting tool. The gravity center of the Vacuum Pump is located at motor side, therefore,
the Vacuum Pump inclines to one side during lift-up.
Exert tension gradually on the wire and do not lift up suddenly.
This lift-up work may only be executed by the qualified workers. Do not stay under
the Vacuum Pump during the lifting work.
An INJURY or FIRE caused by FALL or TUMBLING DOWN is feared for all of these
cases.
3. Ambient temperature should be kept –20㷄䌾+60㷄during transportation.
Lifting method of the Vacuum Pump
Safekeeping ---------------------------------------------------------------------
Take care of following points for safekeeping the Vacuum Pump or suspending its operation for a long
period.
1. For safekeeping in the packed.
Keep the Vacuum Pump in an indoor dry place (Ambient temperature: -20㷄~+50㷄). Do not keep
it on such a place, as is exposed to water or dust, or with vibration, or place it on a bare ground
directly.
2. For keeping it in the installed condition.㩷
(a) Cover the entire Vacuum Pump with a sheet for protecting it from invasion of moisture foreign
materials.
(b) Keep the Vacuum Pump with its hanger bolt mounted. If it is kept with the hanger bolt
dismounted, water may sometimes invade into through the screw hole.
(c) Run the Vacuum Pump for some minutes keeping it and every 3 months, for protecting the
bearings from rusting.
(d) If the operation of Vacuum Pump is suspended for a long period, measure the insulation
resistance of its winding every 6 months and verify that it is kept at higher than 1 Mȍ. If the
resistance is not higher then 1 Mȍat normal temperature, such measures are required as to dry
the winding.
(e) Keep the Vacuum Pump in an indoor dry place (Ambient temperature: -20㷄~+50㷄).
1. Use one hanger bolt
(VFZ401䌾VFZ701)
2.Use two hanger bolts
(VFZ801, VFZ901)
㪞㫉㪸㫍㫀㫋㫐㩷㪚㪼㫅㫋㪼㫉
㩷
In case of terminal box is located 45
㫦
(VFZ801, VFZ901)

6
Name of parts -------------------------------------------------------------------
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Installation and Piping --------------------------------------------------------
1㩷Take care of the following points for installing and adjusting the Vacuum Pump.
Alarm
1. Ground the protective earthing terminal surely.
An ELECTRIC SHOCK or a FIRE is feared.
2. In case of using the Vacuum Pump mounted on a ceiling or wall, its fall is feared
depending upon the condition. Follow the catalog or instruction manual for details of
usable range.
INJURY caused by its FALL is feared.
Caution
3. Never place any inflammable object around the Vacuum Pump.
AFIRE is feared.
4. Do not place any obstacle, which disturbs the ventilation, around the Vacuum Pump.
ABURN or a FIRE caused by abnormal heating are feared, due to the disturbed
ventilation.
5. Fasten the foundation bolts surely before starting the operation. An INJURY or
DAMAGE due to shift of the Vacuum Pump is feared, if the fastening is insufficient.
6. Never step on or hang from the Vacuum Pump
An INJURY is feared.
7. Make the nameplate for the Vacuum Pump always easily legible and do not place any
obstacle In front or it. Do not dismount the face plate.
Casin
g
End cover
Gutter
Terminal box Motor
Fan cover
Casing cover
Impeller
Silence
r
Cooling fan
Suction port
Delivery port
䋨Cross section of VFZ601A䋩
Middle bracket

7
2㩷Take care of the following ranges for the installation site and the gas to be transported.
Caution
1. Outdoor/indoor䋺Install at an indoor site, which is exposed to no wind and rain
Otherwise, an ELECTRIC SHOCK or a FAULT is feared.
2. Ambient temp./
transport gas䋺
Use it in the range from -10 to 40㷄. Otherwise, shortening of life
and a FAULT is feared. (No freezing is allowed.)
3. Relative humidity /
altitude䋺
Use relative humidity in 80% or less and 1000m above sea level
or less. Shortening of life or FAULT is feared.
4. Atmosphere /
gas to be
transported䋺
If can neither be used in a place, where any such corrosive liquid
or gas as an acid or an alkali or any inflammable or explosive gas
exists, nor trans port such material. A FIRE, a FAULT or a
INJURY is feared.
5. Dusts䋺Evade a place, where a lot of dusts, wastes or thread chips exist.
If inevitable, clean the dusts and wastes adhered in the blower
regularly.
AFIRE or a FAULT is feared
6. Ventilation䋺Select a well ventilated place. It shell not be used in a closed
room or in a case. A FIRE
, aBURN or a FAULT is feared.
7. Ambient air䋺Evade a narrow place, for the convenience of maintenance and
inspection.
8. Vibration䋺Select a place, where no external vibration is added to the
blower. If inevitable, take anti-vibration measures for protecting
from addition of vibration the blower. A FAULT,DAMAGE or an
INJURY is feared. The value in Figure 1 is recommended as the
tolerable vibration value.
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㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷
9. Install the Vacuum Pump so as to be used in horizontal shaft condition. For installing it in vertical or
slant shaft condition, install it so that its blower side lies under its motor side (Figure 2).
㶎VFZ701䌾VFZ901: Horizontal shaft condition only
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㪘㫅㪺㪿㫆㫉㩷㪿㫆㫃㪼㩷
㫄㫄㩷
㪙㫆㫃㫋㩷㫊㫀㫑㪼㩷
㫄㫄㩷
㪫㫀㪾㪿㫋㪼㫅㫀㫅㪾㩷㫋㫆㫉㫈㫌㪼㩷
㪥䊶㫄㩷
㱢㪈㪇㩷 㪤㪏 㪈㪈㪅㪎
㱢㪈㪉㩷 㪤㪈㪇 㪉㪊㪅㪋
㱢㪈㪌㩷 㪤㪈㪉 㪋㪈㪅㪊
㱢㪈㪐㩷 㪤㪈㪍㩷 㪈㪇㪌㩷
<No good!><Good!>
(Figure 1)
㽲㽳㽴㽵㽶
Size and 㫋㫀㪾㪿㫋㪼㫅㫀㫅㪾㩷㫋㫆㫉㫈㫌㪼 (recommendation value) of the anchor bolt
㶎㩷 㪙㫆㫃㫋㩷㫄㪸㫋㪼㫉㫀㪸㫃㫊㩷㪸㫉㪼㩷㫉㪼㪺㫆㫄㫄㪼㫅㪻㪼㪻㩷
㫍㪸㫃㫌㪼㫊㩷㫀㫅㩷㪺㪸㫊㪼㩷㫆㪽㩷㪪㪪㪃㩷㪪㪮㪩㪤
(Figure 2)

8
10. For using VFZ501 or VFZ601 in fully closed suction
operation, dismount the emblem at the top of middle
bracket before installation. Dismount the emblem on
the middle bracket surely before installation of the
body.
11. The tone quality of blower noise in this product
changes depending on the Air flow rate, pressure and
fully closed suction operation.
12. Use such pipes as PVC-pipes, gas pipes, flexible hoses etc., which can hold the Vacuum Pump
pressure and hoses other then metallic one for discharge side, use those once, which have a
sufficient high-temperature resistance.
Lay piping so surely as to have no leakage (Figure 3).
Kind of piping for suction port and delivery port.
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Piping for Vacuum Pump
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Ideally, use pipes having the same
diameter as standard pipes.
Caution 䋺Arrange pipe-supports properly, so that no sel
f
weight and external load concentrate on pipe
connections.
Economical for high pressure
and small Air flow, as small
pipes may be used.
Use large diameter pipes for long
piping having many bends
Pipe joint
Pipe support
Construct piping surely with no leakage.
Pressure and Air flow will be reduced by
leaka
g
e.
䋨Figure 3䋩
Emblem
Screw
Type exclusively used for house
䋨T
yp
e from VFZ101A toVFZ301A䋩
Type for house and screwed pipes㩷䋨Type from VFZ401A to VFZ601A䋩
In case of flexible house㩷㩷㩷㩷㩷 In case of screwed pipes
Flexible house
Commercial pipe
Plastic or steel pipe
Fasten surely using
a hose band
Fasten surely using
a hose band
Flexible house
䋨Figure 3䋩
Plastic or steel pipe
Type for companion flanges
䋨Type from VFZ101AF to VFZ601AF䋩
Type exclusively used for screw pipes
䋨Type from VFZ701 to VFZ901䋩
Companion
flange
Flange
㶎In case of piping to companion flanges,
companion flanges must be remove form the
Vacuum Pump before piping, it should be
assembled after piping. Take care of the
breakage by tighten pipes too much.

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13. Do not allow any foreign material to intrude into the blower.
14. The rotation direction shall be the arrow direction on the casing. The rotation direction can be seen
at the shaft end at counter-blower side and it is also correct, if the wind direction coincides with the
IN and OUT indicated at the pipe connection port. Reverse rotation is allowed, although the
performance is reduced.
15. Connect the power cables by using gland or electrical conduit at wiring hole of the terminal box to
protect dust, foreign objects, water and etc. into the terminal box inside. Do not remove the unused
rubber bushes of VFZ501䌾VFZ901. Do not use the rubber bushes to wiring.
16. Take care of edge of wiring holes at the terminal box. An INJURY is feared.
Operation-------------------------------------------------------------------------
Verify the following points for operating the Vacuum Pump.
Alarm
㩷
1. Never access or touch the rotating body (cooling fan etc.) during running.
CATCH-IN or INJURY is feared.
2. Turn the power supply switch off in case of power failure.
INJURY is feared, when the machine runs suddenly at the power restoration.
3. Be sure to turn the power supply switch off, in the Vacuum Pump has been stopped
because the attached protection unit has been activated. An INJURY is feared, as the
machine may run suddenly at the power restoration.㩷
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Alarm
㩷
4. If any abnormality occurs, stop the operation immediately and turn the power supply
switch off. An ELECTRIC SHOCK, an INJURY or a FIRE is feared.
5. During operation the Vacuum Pump, it becomes considerably hot. Take care not to
touch by your hand or body. A BURN is feared.
6. During its operation, do not insert your finger or any other object into the opening (fan
cover, admission and discharge ports etc.) of the Vacuum Pump.
An ELECTRIC SHOCK, an INJURY or a FIRE is feared.
7. If the Vacuum Pump (VFZ401A and larger) is operated with the discharge side closed,
the motor and blower temperature rises drastically and its distortion or damage after
long time operation is feared.
8. If the Vacuum Pump is operated at a wind flow rate not more then continuous
operation range, the motor and blower temperature rises drastically and its distortion
or damage is feared, if the operation is continued for along time.
9. The temperature of the air passing through the Vacuum Pump rises. Especially it
reaches a high temperature at a nearly closed condition. Take care not to touch it by
your hand or body. A BURN is feared. Figure 6 shows the temperature rise.
10. During its operation, the Vacuum Pump and discharged air will reach a considerably
high temperature. Do not use it in a narrow closed room. A BURN, a FIRE or
DAMAGE is feared. (Inquire of us, if you use it in closed operation.)㩷
㩷
Recommended gland VFZ101~VFZ701䋺Multi hole type seal connector
VFZ801
,
VFZ901䋺Seal connecto
r

10
11. The Vacuum Pump will be continuously at within the operation range shown on the wind flow rate
to static pressure curve (shown in the catalog). This operation range is so wide that the machine
can be operated at nearly closed pressure but, if you operate it at high pressure, especially take
care not to exceed the operation range. If you must operate it at closed condition, arrange a
bypass hole on the way, so that a more wind than required range flows through the blower even if
the suction port is closes (Figure 4).
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12. For using air intermittently, the switching by means of a valve is recommended rather than the
switching on and off of the motor (Figure 5). The standard for start and stop frequency of Vacuum
Pump shall be not higher than the values in table below.
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Tolerable start/stop frequency for Vacuum Pump䌛Sw/Hr䌝
Model Value for frequency of 50/60Hz
VFZ101 – VFZ301 30/20
VFZ401 – VFZ601 20/15
VFZ701 – VFZ901 15/10
*1 switch䋺one cycle of ON and OFF
13. The characteristics differ a little when the machine is used at suction side and when used at
discharge side, as shown in the characteristics curve. As the air specific weight becomes larger,
when the discharge side is throttled, the static pressure becomes also larger.
14. Remove any solid object, dust, thread chip, water drop or the like before entering into the Vacuum
Pump. Even if make no dust be sucked directly, take measures not to suck any dust staying
around by mistake. Use of the dust staying around by mistake. Use of the dust collection sack in a
vacuum cleaner or the like is recommended.
Also, it is recommended to use a filter having considerably large space. Remove sometimes the
dust collected in the filter. It may also be possible to make the dust blow off by reversing the
Vacuum Pump, if it is possible.
15. If dusts adhered inside and outside of the blower (especially in the cooling air path for cooling fan
cover), remove them. If adhered dusts increase, it causes such troubles as a temperature rise, a
sink of wind flow rate and an increase vibration.
16. As the motor load (current) changes depending upon the air flow used by the Vacuum Pump, refer
to the characteristics curve for setting the wiring capacity and protection relay.
䋨࿑䋭䋴䋩
䋨Figure 5䋩
㪝㫆㫉㩷㫌㫊㫀㫅㪾㩷㪭㪝㪱㪋㪇㪈㪘㪄㪭㪝㪱㪍㪇㪈㪘㩷㫎㫀㫋㪿㩷㫋㪿㪼㩷㪻㫀㫊㪺㪿㪸㫉㪾㪼㩷㫊㫀㪻㪼㩷㪺㫃㫆㫊㪼㪻
Bypass hole
Valve
Piping
Valve Release
Switch suction and blow using the valve.
(Suction)
(Blow)
Product䋨Load䋩
Suction
Blow
䋨Fi
g
ure 4䋩
Valve

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17. The bearing, oil seal and silencer are consumables and need to be changed when their lives are
arrived. Depending on the environment, in which the machine was used, the Impeller, casing,
casing cover, and wire net are also included in consumables. (Please notice delivery and suction
material is different from VFZ50’s and VFZ60’s silencers when you exchange them.)㩷
Intervals for inspection and exchange of consumables
Part name Inspection/exchange interval
Bearing 2 years
Oil seal At the same time as bearings
Silencer 2 years
Table of bearing and oil seal
Bearing Oil seal
Model
Load side No-load side
Grease
Model Material
VFZ081PN 6201ZZ 6201ZZ Urea - -
VFZ101PN 6202ZZ 6202ZZ Urea VCH20-30-5 Nitrile rubber
VFZ201PN 6202ZZ 6202ZZ Urea SC20-30-7 Nitrile rubber
VFZ301PN 6202ZZ 6202ZZ Urea SC20-30-7 Nitrile rubber
VFZ401PN 6204ZZ 6203ZZ Urea - -
VFZ081A 6201ZZ 6201ZZ Urea - -
VFZ101A 6202ZZ 6202ZZ Urea VCH20-30-5 Nitrile rubber
VFZ201A 6202ZZ 6202ZZ Urea SC20-30-7 Nitrile rubber
VFZ301A 6202ZZ 6202ZZ Urea SC20-30-7 Nitrile rubber
VFZ401A 6204ZZ 6203ZZ Urea - -
VFZ501A 6206ZZC3 6303ZZ Urea - -
VFZ601A 6206ZZC3 6205ZZ Urea - -
VFZ701A 6306ZZC3 6260ZZ Urea - -
VFZ801A 6308ZZC3 6207ZZ Urea - -
VFZ901A 6308ZZC3 6306ZZ Urea - -
㶎Common to VFZ-A, VFZ-AF, VFZ-AN, VFZ-A-4Z
*Standard for use in a standard environment.
They may be shorter depending on the environment.㩷

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18. Wire the power cables with motor terminals surely according to wiring figure in the terminal box or
Figure 7.
(㶎Wiring type of VFZ801 and VFZ901 is direct start type at shipping, therefore, change wiring type
from direct start type to star-delta start type in case of using star-delta start type.)
(Figure 7) Wiring diagram
19. Confirm below items at test running, if inverter is applied for the Vacuum Pump operarion.㩷
䊶Resonance is feared by install condition of the Vacuum Pump. Avoid the frequency of the
resonance
䊶Vibration and noise become bigger by using inverter. Stop the operation immediately, if abnormal
temperature rise or vibration occurs.
䊶Do not use over 60Hz to protect motor burning.
(Maximum frequency of the 50Hz exclusive model is 50Hz.)
Model VFZ101PN䌾VFZ401PN VFZ101䌾VFZ701 VFZ801, VFZ901
Wires 2 wires 3 wires 6 wires
Direct start type
(At shipping)
Star-delta start type
Connecting
method
(Figure 6) Discharged air-temperature rise curve
Air flow rate ( m3/min ) Air flow rate ( m3/min )
Temperature㩷RISE K (㷄)
Power supply
UV
RS
Motor terminal
UVW
RST
Power supply
Motor terminal
V2 W2 U2
U1 V1 W1
RST
Power supply
Motor terminal
U1
V2 V1
U1V2 V1
W2 W1U2
W2 W1U2
Power supply
Motor terminal

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Faults and Countermeasures -----------------------------------------------
In case of occurrence of any fault in the Vacuum Pump, handle it properly referring to Table 1 㵰Fault
States of Vacuum Pump and Countermeasures” (page 12) and taking care of the following points.
Caution㩷
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1. Always only the expert shall investigate, repair, disassemble and modify the fault. An
INJURY due to the Impeller edge or key groove, an ELCTRIC SHOCK or a FIRE is
feared.
2. If the Vacuum Pump must be abandoned as the result of investigation in a rare
possibility, dispose it as a general industrial waste.㩷
3. If the investigation result shows that the machine cannot be easily repaired, if you will
request any spare part or you have any trouble, contact our agent, dealer or business
office at any time. In case of contacting us, please verify following items in advance:
(a) Model indicated in the nameplate,
(b) SER. No.,
(c) Details of the fault,
(d) Name of faulty part, name of spare parts,
(e) Required quantity and
(f) Kind of gas to be transported 䋨e.g.Air䋩
㩷

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Table - 1 Fault States of Vacuum Pump and Countermeasures
States of Fault Causes Countermeasures
Switch-contact fault Repair switch-contact.
Fuse blown Replace it.
One phase of power supply
connection wires disconnected.
Replace it.
One phase of stator coils
disconnected.
Request factory to repair it.
Stator and rotor come into contact
due to bearing fault.
Replace bearing.
Whining sound
Foreign material involved in blades. Remove it.
Power failure Consult with utility company.
2 phases of power supply connection
wires disconnected.
Replace them.
2 phases of stator coils disconnected. Request factory to repair them.
Does not
rotate
No sound
Switch fault Replace or replace it.
Insufficient fuse capacity Replace it with lager capacity.
Fuse blown
Short-circuit in circuit Repair or replace it.
Power supply voltage fell Consult with utility company.
Single phase operation Request factory to repair it.
Motor overheated
Impeller rubbing Adjust wheel.
1 phase short circuit in stator coils. Request factory to repair it.
Whining sound Uneven space between stator and
rotor.
Request factory to repair it.
Blade wheel rubbing Adjust it.
Blade damaged due to foreign
material.
Request factory to repair it.
Abnormal noise
Bearing fault Replace it.
Leakage in piping. Fasten tightly.
Piping blocked Ventilate sufficiently.
Reverse rotation direction Correct connection (2 out of 3
wires).
Rotates
Motor rotates but
fan works
improperly.
Closure equipment fault Replace it.

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Parts List and Disassembled Drawings ----------------------------------
The Parts List of Vacuum Pump is shown below.
The Parts No. in Parts List corresponds to those in Disassembled Drawings.
Caution: Some parts are not used for some machine models.
㩷
Part No. Name of Part Part No. Name of Part Part No. Name of Part
1-1 Casing cover 3-6 Spacer 4-17 Bolt 䋨Middle bracket, frame䋩
1-2 Bolt 䋨for Casing cover䋩3-7 Press ring 4-18 Spring washer
1-3 Impeller 3-8
Bolt 䋨for fastening Fan wheel䋩4-28 Cap
2-1 Casing 3-9 Claw washer 5-1 Terminal box
2-2 Bolt 䋨for Casing䋩3-11 Key 䋨for Fan Wheel䋩5-2 Packing 䋨for Terminal box䋩
2-3 Spring washer 3-12 Motor cooler fan 5-3 Terminal box cover
2-4 End cover 3-13
Bolt 䋨for Motor cooler fan䋩5-4 Bolt 䋨for Terminal box 䋩
2-5 Bolt 䋨for End cover䋩3-15 Collar 5-5 Bolt 䋨for Terminal box conduction䋩
2-6 Spring washer 3-22 Emblem 5-6 Packing 䋨for Terminal box cover䋩
2-7 Silencer (1 set)㩷3-23
Bolt 䋨for Emblem䋩5-7 Bolt 䋨for Terminal box cover䋩
2-7-1㩷Silencer (Suction side)㩷4-1 Frame/Stator assembly 5-8
Bush 䋨for Terminal box䋩
2-7-2 Silencer (Delivery side)㩷4-4 Shield at counter-driving side 5-9 Bolt 䋨for Protective earthing
terminal䋩
2-8 Flange 4-5 Waved washer 5-10 Terminal base
2-9 Bolt 䋨for Flange䋩4-7 Bolt 䋨for Shield䋩5-11 Bolt (for Terminal base)
2-14 Oil seal 4-8 Cooler fan cover 5-12 Spring washer
2-15 Silencer Retaining Net 4-9 Bolt 䋨for Cooler fan cover䋩5-18 Base plate 䋨for Terminal base䋩
2-18 Hanger bolt 4-13
Bolt 䋨Shield, frame䋩5-20 Bush 䋨for Leader mouth for Terminal
box䋩
3-1 Shaft/Rotor assembly 4-14
Nut 䋨Shield, frame䋩9-1 Nameplate 䋨Rating䋩
3-4 Bearing at counter-driving
side 4-15 Spring washer 䋨Shield,
frame䋩9-2 Nameplate 䋨Caution䋩
3-5 Bearing at driving side 4-16 Middle bracket 9-3 Nameplate 䋨PSE mark䋩

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Disassembled VFZ101A – VFZ301A
䋪㩷 For terminal box parts for VFZ301A, 䋪㩷 See disassembled drawings of VFZ401A㩷
Motor part of VFZ101A

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Disassembled VFZ401A

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Disassembled VFZ501A
䌾
VFZ601A

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Disassembled VFZ701A
䌾
VFZ901A
Motor part of VFZ801A, VFZ901A