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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 G15 Series

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

Страница 2: ...ibed 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 s...

Страница 3: ...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 Removal 8 6 2 Inspection 9 6 3 Installation 9 7 Spool assembly and Sleeve 7 1 Removal 10 7 2 Inspection 12 7 3 Installation 12 8 Retightening of Tie rods 13 ...

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 A_ S_ 17 mm A_ S_ 22 mm P_ Hexagonal box wrenches 5 mm Phillips head screw driver P_ Pliers P_ 2 2 Special tools sold separately Cap and disk remover A_ S_ Sleeve remover Purpose Removing the cap Pur...

Страница 5: ...ove 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 manifold Fig 4 3 Remove the O ring valve seat ball valve stopper Fig 4 4 Fig 4 1 Fig 4 2 Fig 4 3 Fig 4 4 ...

Страница 6: ...ld 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 O ring valve seat B valve seat A ball Fig 4 8 Fig 4 5 Fig 4 6 Fig 4 7 Fig 4 8 ...

Страница 7: ...re 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 left and if it is outside the usable range replace the valve seat B Usable range of Valve seat B 0 177 0 256 in 4 5 6 5 mm 4 3 Installation For installation see Exploded View on the separate sheet a...

Страница 8: ...d 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 the diaphragm center disk and center rod from the opposite side of the main body Put the cloth between the vise and the center rod to prevent the part get scratched Fig 5 4 Fix the center rod and the...

Страница 9: ...center 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 and center rod from the opposite side of the main body Put the cloth between the vise and the center rod to prevent the part get scratched Fix the center rod and remove the center disk Fig 5 7 Remove ...

Страница 10: ...into 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_ type Apply screw glue on the thread of center rod then tighten the center disks Assemble the out chamber Bolts should not be fully tightened at this point Place the pump on flat surface stand the pump...

Страница 11: ...mber 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 PTFE O ring by new one Tighten the bolts that balance should be equal from both side on diagonal line with even torque 6 Guide bush 6 1 Removal A_ S_ Type Remove the diaphragm and center rod etc see...

Страница 12: ...re 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 ø0 6299 ø0 6496 in ø16 0 ø16 5 mm 6 3 Installation For installation see Exploded View on the separate sheet and install in the reverse order of disassembly Tightening torque for tapping screw P_ 9 in lbf 1 0 N m NOTE Make...

Страница 13: ...om 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 button Fig 7 3 Remove the sleeve using the sleeve remover special tool Part number 713148 Fig 7 4 Fig 7 1 Fig 7 2 Fig 7 3 Fig 7 4 ...

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 remover special tool Part number 713148 Fig 7 8 Fig 7 5 Fig 7 6 Fig 7 7 Fig 7 8 ...

Страница 15: ...it is outside the usable range replace the sleeve Usable range of Sleeve A_ S_ Part to measure A ø0 6909 ø0 6937 in ø17 55 ø17 62 mm Part to measure B ø0 9862 ø0 9890 in ø25 05 ø25 12 mm P_ Part to measure A ø0 4984 ø0 5016 in ø12 66 ø12 74 mm Part to measure B ø0 7055 ø0 7087 in ø17 92 ø18 00 mm O ring Packing If the O ring is worn out or cracked replace it NOTE Spool assembly and Sleeve must be ...

Страница 16: ...bolts 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 bolts for the manifold AN AS SN SS 105 in lbf 12 N m AT ST 105 in lbf 12 N m 160 in lbf 18 N m PS 105 in lbf 12 N m 89 in lbf 10 N m PT 89 in lbf 10 N m Fig 8 1 A_ S_ Type Fig 8 2 P_ Type ...

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 JAPAN PHONE 81 0 3 3777 0241 FAX 81 0 3 3777 0584 201807 NDP497M ...

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