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WARNING 

  For your own safety, be sure to read these procedures carefully before performing              

maintenance on this product. After reading this document, be sure to keep it handy for future 
reference.

 

These maintenance manuals cover what you should know about maintenance of the Yamada G15 Series 
Diaphragm Pumps. 
This edition is based on the standards for the August 2018 production run. Remember, the specifications are 
always subject to change; therefore, some of the information in this edition may not apply to new 
specifications. 
 

·Warnings and Cautions 

For safe use of this product, be sure to note the following: In this document, warnings and cautions are 
indicated by symbols. These symbols are for those who will operate this product and for those who will be 
nearby, for safe operation and for prevention of personal injury and property damage. The following warning 
and caution symbols have the meanings described below. Be sure to remember their meanings. 

 

 

If you ignore the warning described and operate the product in an   

  manner, there is danger of serious bodily injury or death. 

 
  If you ignore the caution described and operate the product in an   
  improper manner, there is danger of personal injury or property 

damage. 

Furthermore, to indicate the type of danger and damage, the following symbols are also used along with those 
mentioned above: 

This symbol indicates a DON'T, and will be accompanied by an explanation on something you 
must not do. 

 

This symbol indicates a DO, and will be accompanied by instructions on something you must 
do in a certain situation. 

WARNING 

  Before starting maintenance work, cut off the feed air and clean the pump. If air pressure or 

residue remain in the pump, there is danger of explosion, or possible poisoning resulting in 
serious injury or death if chemicals adhere to the skin or are accidentally swallowed. 
(For details on cleaning the pump, refer to Chapter 6 of the Operation Manual.) 

  When replacing parts, be sure to use the recommended genuine parts or Equivalents. Use of other 

parts may cause a malfunction of the product. 
(Refer to Exploded View and Reminder to order correct item on the separate sheets.)

 

 

CAUTION 

   When it is instructed that special tools must be used, be sure to use the specified tools. Otherwise, 

the pump may be damaged. 

  Refer to 10.1 "Specifications" in the Operation Manual. Also, remember that the pump is heavy, 

and extreme care must be taken when lifting it. 

 

              WARNING : 

              CAUTION

   

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Содержание Global Series

Страница 1: ...MAINTENANCE MANUAL G15 Series Doc No NDP 497M 02...

Страница 2: ...bed and operate the product in an improper manner there is danger of personal injury or property damage Furthermore to indicate the type of danger and damage the following symbols are also used along...

Страница 3: ...Ordering Replacement parts 1 4 Balls Valve seats 4 1 Removal 2 4 2 Inspection 4 4 3 Installation 4 5 Diaphragm and Center rod 5 1 Removal 5 5 2 Inspection 7 5 3 Installation 7 6 Guide bush 6 1 Remova...

Страница 4: ...operation material is repeatedly taken in and discharged out 2 Tools etc 2 1 General tools Socket wrenches 10 mm A_ S_ P_ 12 mm P_ 13 mm A_ S_ 17 mm A_ S_ Open end wrenches 10 mm A_ S_ 12 mm P_ 13 mm...

Страница 5: ...ve the manifold Fig 4 1 Remove the O ring valve stopper ball valve seat Fig 4 2 Turn over the main body assembly Fig 4 3 Remove 4 mounting bolts from lower manifold and remove the base and the manifol...

Страница 6: ...d A Fig 4 5 Remove the Ball valve seat A valve seat B O ring Fig 4 6 Turn over the main body assembly Fig 4 7 Remove 4 mounting bolts from lower manifold B and remove the manifold B Fig 4 7 Remove the...

Страница 7: ...e the dimension shown at left and if it is outside the usable range replace the valve seat A Usable range of Valve seat A 0 055 0 071 in 1 4 1 8 mm Valve seat B Fig 4 12 Measure the dimension shown at...

Страница 8: ...from the opposite side of the main body Remove the center disk on both sides of the center rod Fig 5 3 After the center disk on one side have been removed remove the center disk and diaphragm Remove...

Страница 9: ...enter disk on one side have been removed using the spanner 22 mm etc remove the center disk diaphragm and backup diaphragm only PT Type Remove the diaphragm backup diaphragm only PT Type center disk a...

Страница 10: ...o the main body Keep the convex side to the outside for diaphragm For the model with PTFE diaphragm put the O rings into both side of the diaphragms cf Fig 5 9 Fig 5 10 A_ type Tighten the nuts S_ typ...

Страница 11: ...ber Center rod Out chamber PS 177 in lbf 20 N m 105 in lbf 12 N m PT 177 in lbf 20 N m 89 in lbf 10 N m NOTE Make sure there is no dust on the seal surface in order to prevent seal damaged Replace the...

Страница 12: ...e the inside diameter and if it is outside the usable range replace the guide bush stopper guide bush A guide bush B Usable range of guide bush stopper guide bush A guide bush B 0 6299 0 6496 in 16 0...

Страница 13: ...m inside the pump Fig 7 1 Remove the cap A and cap B using the cap and disk remover special tool Part No 771132 Fig 7 2 Remove Spool assembly by pushing it from Cap A side the side without reset butto...

Страница 14: ...body assembly from the main body Fig 7 5 Remove the cap using the Pliers Fig 7 6 Remove the cushion and then push out the spool assembly from opposite side Fig 7 7 Remove the sleeve using the sleeve r...

Страница 15: ...if it is outside the usable range replace the sleeve Usable range of Sleeve A_ S_ Part to measure A 0 6909 0 6937 in 17 55 17 62 mm Part to measure B 0 9862 0 9890 in 25 05 25 12 mm P_ Part to measure...

Страница 16: ...olts that balance should be equal from both side on diagonal line with even torque Retighten the Out chamber and then the manifold in this order Fig 8 1 Fig 8 2 Retain bolts for the out chamber Retain...

Страница 17: ......

Страница 18: ...USA PHONE 1 847 631 9200 or 1 800 990 7867 Toll Free FAX 1 847 631 9273 www yamadapump com Manufactured by YAMADA CORPORATION International Department 1 1 3 CHOME MINAMI MAGOME OHTA KU TOKYO 143 8504...

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