Pearl Rotary Joint Instruction Manual（Common）
This instruction manual applies to products with type designations that begin
with the following characters．
AC KC NC NX OC OKC ONC OPM ORC OSC OSM RC RX SKC SM SX

１．For Safety（１）Be sure to read this manual before use． Store this manual carefully sothat it can be referred to at any time．
（２）Transport，storage，installation，piping，operation，or maintenance of thisproduct should be carried out by an experienced expert．
（３）In order to prevent product malfunction resulting in bodily accidents ordamage to peripheral equipment， be sure to follow the warnings，cautions，and instructions described in this manual．
（４）Never disassemble or modify this product because doing so is dangerous．
（５）
Instruction manuals for respective series are available on our website．
Seethem while reading this manual．If the instruction manual for your series
is not available on our website， contact our sales representative forassistance．

No．： SE２００１
６−１
Issued on ： Oct．
４２０２１（２）Remove any foreign objects in such flow passages as a pipe or a rollbefore product installation．If the fluid contains foreign objects， install astrainer at the flow passages．
（３）
When inserting an internal pipe into the rotor，do not allow the pipe to hit
inner parts．
（４）Install so that no center misalignment or inclination occurs between therotation axes of the rotor and a roll．
（５）Use a flexible metal tube or a rubber hose with adequate flexibility toconnect to the product．Steel pipes should not be used for pipe laying．
（６）Avoid such pipe laying where heavy items such as valves are suspended
from the product．
（７）When installing a flexible metal tube， slightly bend it in the rotation
direction of roll．Furthermore，carry out pipe laying work so that excessive
tension ， compression ， torsion ，or bending is not caused．
（See thefigure below．）
Rotation Direction of Roll

２．Precautions on Transport and Storage

３．Precautions on Installation and Pipe Laying
Product adjustment is not required before installation．

WARNING

Flexible
Metal Tube
Slightly bend the tube
in the rotation direction．

OKTension Compression

TorsionBending

Unacceptable（８）Do not secure the rotation stopper to an anti−rotation plate or a round bar．
An example of a measure using a round bar is shown below．
（ Only forproducts with rotation stoppers）

In order to prevent bodily accidents or damage to peripheral equipment，
１．If your product has an inspection hole，be sure to install it so that thehole faces downward．Also，do not block the hole．
２． Use a hose for product connection suitable for characteristics of fluid
used and operating conditions（pressure，temperature）．

（The periphery of a round bar that comes in contact with therotation stopper must be smooth．）

４６４５０−０−００５
９Ｄ ２０２１．
１０．表In order to prevent injury to workers， product damage， or fluid leakage，follow the following instructions．
（１）To transport a product that weighs over ２５kg， use appropriate lifting
equipment．
（２）Do not drop or subject the product to undue impact while it is beingtransported．
（３）Wrap the product before storing it to prevent the entry of foreign objects．
（４）Store this product in a dry environment at １０℃ to ４０℃．
（５）The storage period should be within a maximum of two years．

In order to prevent injury to workers， product damage， or fluid leakage，follow the following instructions．
（１）Take the product weight into consideration before installing the product．
Use equipment such as a crane as necessary． This work should be
performed by two or more persons．

＜Pearl is a trade name of Showa Giken Industrial Co．
，Ltd．＞

Be sure to read the reverse side．

４．Precautions for Use

６．Product Warranty（１）Perform operation within the service conditions． Moreover，do not operate
under conditions where both pressure and rotation speed are close to themax．values．
Doing so significantly reduces product lifetime．
（２）When starting operation， check for abnormal rotation （center runout，abnormal noise，etc．）or fluid leakage from the product while gradually
increasing fluid pressure and roll rotational velocity．
（３）During rotation or high−temperature／pressure fluid flow，keep well away fromthe product to prevent injuries or burns．Do not directly touch rotating or hotparts during operation．
（４）If operation is continued under a center runout condition，product damage or
fluid leakage may result．
（５）The occurrence of surging or water hammer can cause product damage or
fluid leakage．Avoid such occurrence．
（６）Do not perform dry operation（operation without fluid flow）for a long time．
The product lifetime becomes shortened．
（７）If the product is left as is for a long time during operation shutdown，rust
may occur，causing fluid leakage after operation restart．Clean flow passages
for the product，pipes，and roll before restarting operation．

If a malfunction occurs during the warranty period，contact us or the distributor and send
the product to us．Be sure to carefully pack the product for protection before sending it．
After receiving the product，we will confirm the malfunction．If the malfunction was clearlycaused by the materials of product components or the manufacturing method， we willrepair the product in question or replace it with a new one free of charge．

●Daily inspection
Visually check pipe connections，product connections，and the product for
fluid leakage．If fluid leakage is detected，stop operation and immediatelyrepair the product or replace it with a new one．

WARNING

１．If operation is continued with fluid leakage not being repaired，
bodily accidents or damage to peripheral equipment may result．
２．In order to prevent bodily accidents due to residual fluid in theproduct or pipes，remove the product after fluid has been
completely drained from the product or pipes and temperature
has dropped to room temperature．

●Greasing（１）Periodic greasing is required for grease−type products with greasenipples．Be sure to remove the grease outlet plug before greasing．
Then fill the grease through the grease nipple．Continue to fill until new
grease comes out from the grease outlet．
（２）See our catalog or website for the greasing frequency．
（３）Use the same brand of grease as the one filled in the product before
shipment from our company．
●Repair and replacement of consumables
Contact our sales representative to request consumable repair orreplacement．

１．Warranty period＜New products＞
One（１）year and six（６）months after shipment（from the manufacturing date）orone（１）year after installation，whichever comes first．
＜Repaired products＞
Six（６）months after shipment（from the manufacturing date）．
２．We charge a fee for repairs in any of the following cases．
①Failure after the warranty period has expired②Failure caused by use of the product deviating from the service conditions③Failure caused by misuse（improper storage，installation，pipe laying，operation ormaintenance，etc．）④Failure caused by fluid contaminants or foreign objects in the fluid⑤Failure caused by relocation，transport，or falling of the product after delivery⑥Failure caused by disassembly，repair，or modification done by personnel other than ourservice personnel⑦Failure of the product attributed to using materials or according to standards specified by
the customer⑧Failure of the product attributed to using materials provided by the customer⑨Failure caused due to unavoidable acts of nature such as fires or other natural disasters３．Scope of responsibility
Our responsibility shall be limited to repairs，replacements，or transport expenses covered bythis product warranty provision．Expenses or damages caused by said failures above shallnot be covered．
４．Applicable regions
This product warranty provision shall be applicable to products installed in Japan．
Contact our sales representative if you install and use our products outside Japan．
５．Another agreement
If another product warranty agreement is made separately with us and clearly states that said
agreement shall have priority over this product warranty provision，this provision shall not beapplicable．
６．This product warranty provision shall not restrict the customer s legal rights．

URL https：／／www．
sgk−p．co．jp
Export Department Phone：＋８１−３−３５９８−１４００ Fax．
：＋８１−３−３５９８−２７００（Tokyo Office） E−mail：sgk−tk＠sgk−p．co．jp
３６２−０８１１ Japan
Headquarters ７−２４，Nishi−Kobari，Ina−Machi，Saitama，Phone：＋８１−４８−７２８−９４６０ Fax．
：＋８１−４８−７２８−９４６１
Sales Office Tokyo Office，Osaka Office，Nagoya Office

４６４５０−０−００５９Ｄ ２０２１．
１０．うら

５．Inspection and Maintenance

Product Warranty Provision