pgmuza
17-05-2007, 11:27 AM
hie guys
I am new to this forum and this is my fisrt posting.I am a qualified ref mech in with four years post appy.been working on an ammonia ice cream manufactufing plant with six Sabroe SMC112 compressors(12 cylinders) .Three are low stage,two are high stage and one is a swing.I have changed all pistons on two of the low stage comps recently.Problem is one of them broke 2 consecutive pistons counting from the pump end some 4 weeks later.I checked for probable causes but could not find any so i replaced the broken pistons putting thicker gaskets below cylinder liners to eliminate posiblity of pistons hiting dischage vales.And it happened again,same pistons,after about six weeks this time.Puzzling! the other comp is perfectly fine.
Anybody experienced something like this before, or did my employer buy fake pistons?
I am new to this forum and this is my fisrt posting.I am a qualified ref mech in with four years post appy.been working on an ammonia ice cream manufactufing plant with six Sabroe SMC112 compressors(12 cylinders) .Three are low stage,two are high stage and one is a swing.I have changed all pistons on two of the low stage comps recently.Problem is one of them broke 2 consecutive pistons counting from the pump end some 4 weeks later.I checked for probable causes but could not find any so i replaced the broken pistons putting thicker gaskets below cylinder liners to eliminate posiblity of pistons hiting dischage vales.And it happened again,same pistons,after about six weeks this time.Puzzling! the other comp is perfectly fine.
Anybody experienced something like this before, or did my employer buy fake pistons?