Printed in Thailand
For Maintenance Operators
LA type Medo Compressor for Septic Tank (blower),
Spare Parts Replacement Manual
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CAUTION
Please read this manual carefully and fully understand the contents
before maintenance and management.
Manufacturer : NITTO KOHKI CO., LTD.
9-4, Nakaikegami 2-Chome, Ohta-ku,
Tokyo, 146-8555, Japan
Tel : 81-3-3755-1111
Fax : 81-3-3753-8791
URL : http://www.nitto-kohki.co.jp/e/
Distributor :
U.S.A :
NITTO KOHKI U.S.A., INC.
46 CHANCELLOR DRIVE,
ROSELLE, ILLINOIS 60172, U.S.A.
Tel : +1-630-924-8811
Fax : +1-630-924-0808
www.nittokohki.com
Europe :
NITTO KOHKI EUROPE GMBH
GOTTLIEB-DAIMLER-STR. 10,
71144 STEINENBRONN,
GERMANY
Tel : +49-7157-989555-0
Fax : +49-7157-989555-40
www.nitto-kohki.eu/
NITTO KOHKI EUROPE GMBH UK Branch
UNIT A5, LANGHAM PARK
INDUSTRIAL ESTATE, MAPLE ROAD,
CASTLE DONINGTON,
DERBYSHIRE, DE74 2UT,
UNITED KINGDOM
Tel : +44-1332-653800
Fax : +44-1332-987273
www.nitto-kohki.eu/
Safety Caution
Be sure to observe the following
Description of pictorial indication (term and indications)
Be aware that the term (caution) used in this manual indicates danger as follows:
Term
Level of danger indicated by the term
CAUTION
This term indicates the supposed possibility of injury or property damage
if an operation is performed in disregard of this caution or a wrong
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Be aware that the symbols used in this manual are described as follows:
Symbol
Indication of symbol
This symbol informs you that there is a description to call attention to a hazard (danger /
warning included). The detailed contents (general caution in the case at left) are described
in or near this symbol with a picture, a term, a directive statement, or the like.
This symbol informs you of (prohibited) acts to avoid danger. The detailed prohibited
acts (general prohibited act in the case at left) are described in or near this symbol with a
picture, a directive statement, or the like.
This symbol informs you of (compulsory) acts to be surely required to avoid danger.
The detailed acts to be surely required (general compulsory act in the case at left) are
described in or near this symbol with a picture, a directive statement, or the like.
Items requiring extra attention
CAUTION
Prevention of electrical shock and ignition accident
①
Do not install the blower where there is a risk that the blower is submerged or covered
with snow.
②
For the blower power supply, use a waterproof electric outlet.
③
For the power supply, use 100 VAC with a ground fault interrupter and an overcurrent
circuit breaker equipped.
④
The electric work must always be conducted by an expert engineer.
⑤
Do not place anything within approximately 50 cm from the blower.
⑥
Do not put anything on the power cord.
⑦
Be sure to disconnect the power plug from the electric outlet before disassembling the
blower.
⑧
Be sure to put the removed top cover back after inspecting the blower.
⑨
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⑩
Be sure to wear working gloves or the like at disassembly or repair.
Failure to observe this may cause a burn.
Be sure to observe the following to prevent a malfunction or an accident with the blower.
Structure of spare
Model
Part No.
Part name
Q’ty
Model
Part No.
Part name
Q’ty
LA-60A
LA-60B
LA-60E
LA-80A
LA-80B
LA-80E
HEMLA-80B
LB03132
Piston ASSY
2
LA-60A
LA-60B
LA-80E
LP30585
Spring 18.1×49
2
LP12155
Spring seat
2
LQ02730
Filter element
1
LA-60E
LP30620
Spring 18.1×48
2
LQ01043
Gasket A
2
LA-80A
LA-80B
LQ02743
Spring 18×49.7
2
LQ01042
Gasket B
2
<60Hz ONLY>
LA-80A
LA-80B
HEMLA-80B
LQ05425
Spring 18.1×49.7
2
Piston cross-sectional view
Sliding part (black)
Grease
Spring Seat
Spring
Piston Boss
CAUTION
●
Fix the spring into the piston by rotating
it clockwise.
●
Check that grease is present on the
convex face of the spring seat.
(If no grease is present, please contact
your supplier)
●
Never use standard grease as it may
cause a malfunction.
●
Keep the Sliding part away from dust,
swarf, water, oil or grease.
1. Precautions
(1) Our blower is an oil-free type; therefore, never lubricate the blower.
(2) The main unit of the blower is precisely adjusted; therefore, never disassemble the unit.
(Never loosen the eight hexagonal-head bolts on the rear of the main unit.)
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(1)
Be sure to perform cleaning or replacement after disconnecting the power plug from the electric
outlet.
(2) Loosen
the
①
Bind screw, and remove the
③
Filter cover.
(3)
Take out the
④
Filter element from the
⑤
Upper Case, replace the element with new one or
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port of the
⑤
Upper Case with a cloth or the like.
(4) Clean
the
④
Filter element as follows
(a) Beat the
④
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(b) If the element is severely dirty, use a neutral detergent to wash it, rinse it well, and dry it in the
shade.
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②
Filter Cover Gasket is attached to the
③
Filter cover.
(6)
Be sure to mount the
③
Filter cover, and secure it with the
①
Bind screw.
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this may cause a malfunction.
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(1)
Be sure to perform replacement after disconnecting the power plug from the electric outlet.
(2) Remove
the
⑤
Upper Case, loosen the
⑧
Hexagonal-head bolts using a box wrench, and
remove the
⑨
Head Cover. If the gasket is glued too tightly to remove the cylinder cover, insert
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⑨
Head Cover and
gently separate them.
(3)
Pull out the
⑮
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(4) Replace
the
⑮
Piston set,
⑩
Gasket A, and
⑪
Gasket B with new ones. Be absolutely careful
not to let dirt, oil, or other foreign matter attach to the sliding part (black part) of the
⑫
Piston
assembly. Do not touch the moving parts as much as possible. (For the
⑮
Piston set re-
placement, be sure to replace two sets of the assemblies at the same time.)
(5) Insert
the
⑮
Piston set into the
⑯
Blower main unit, mount the
⑩
Gasket A on the
⑨
Head
Cover, mount the
⑪
Gasket B on the
⑯
Blower main unit without displacement, and tighten
the
⑨
Head Cover with the
⑧
Hexagonal-head bolts. When tightening the
⑧
Hexagonal-head
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(6)
For LA-60A and 80A, lightly press the
⑨
Head Cover of the
⑯
Blower main unit.
(This operation is performed to ensure the
⑰
Nozzle seal and discharge port peripheral seal.)
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that there is no air leakage from the
⑨
Head Cover,
⑰
Nozzle seal, and other areas while
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⑧
Hexagonal-
head bolts uniformly again, or check to see whether the
⑩
Gasket A and
⑪
Gasket B are
appro-priately placed.
(8)
If there is no problem, put the
⑤
Upper Case on the
⑯
Blower main unit and tighten six pieces
of the
⑥
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⑦
Gasket C is securely placed.
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⑯
Blower
Main Unit
Never loosen these eight(8) Hex.
Bolts on the Endcap.
Air Outlet
Bottom Case
Slot for screwdriver
Outlet Port
⑰
Nozzle Seal
⑫
Piston ASSY
⑬
Spring
⑭
Spring Seat
⑮
Piston Set
⑩
Gasket A
⑪
Gasket B
⑦
Gasket C
⑧
Hexagonal-Head Bolts
⑨
Head Cover
②
Filter Cover Gasket
④
Filter Element
⑤
Upper Case
①
Bind Screw
⑥
Bind Screws
③
Filter Cover
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①
Bind Screw
③
Filter Cover
④
Filter Element
⑥
Bind Screws
⑦
Gasket C
⑧
Hexagonal-Head Bolts
⑩
Gasket A
⑪
Gasket B
⑫
Piston ASSY
⑬
Spring
⑭
Spring Seat
⑮
Piston Set
⑯
Blower
Main Unit
Never loosen these eight(8) Hex.
Bolts on the Endcap.
Air Outlet
Slot for screwdriver
Bottom Case
⑨
Head Cover
②
Filter Cover Gasket
⑤
Upper Case
Outlet Port
