Dober49
08-09-2007, 06:38 PM
First things first hi all,
Now down to business, I've been looking after fridge systems for 25 years, at the moment I look after only one site, which is of a reasonable size consisting of 2 Stal mini screws S24 and a R5 MK2 for the vertical scrape coolers. 1 frigoscania plant with a Sab 163 hf and a CO2 plant with a SMC 116 e and 2 HPC 106s's both suppling cooling for 2 Samifi's plate freezers. A coldstore with 2 bitzer screw on NH3 and A/C for the production area being supplied by 2 Grasso recep's. I took part in the commisioning of the the CO2 plant while working for York and to be honest was never overly impressed with the plant. The oil recovery was always an arse on the CO2 side. I have since modified and has been proven to be ok for the last 8 months, plus other minor problems I've had to sort. The plant is now about 2 1/2 years old and since being employed by the site I've kept on top of all the servicing. First I carried out an inspections on all of the comps, a top end service and an oil change on the NH3 comp after finding 3 broken suction valves and numerous valve spring broken. After completing the oil change and top inspections on the CO2 comps everything looked in order. Well I thought, today after being able to shut the plant down I took the opportunity to carry out a oil filter change and top end service on the No1 CO2 comp. All was going well untill I took the last valve out to find mild pitting in the piston's crown, thinking a suction valve was broke but no, so I pulled the liner out to find the rings shattered, plus the ring grooves on the piston looked like they had melted in a fuuny way. Being curious I pulled out all the other liners to find every single piston ring had shattered. I mean each ring in about 6 or 7 pieces, no valves were broken not even a spring, all the liners are ok except for the melted one. York had previosly replaced a comp due to failure, not this one though. I was just wondering if there was anyone out there that has had much to do with HPC106's comps on CO2 and there experiences of them.
Cheers for looking Dober49.
Now down to business, I've been looking after fridge systems for 25 years, at the moment I look after only one site, which is of a reasonable size consisting of 2 Stal mini screws S24 and a R5 MK2 for the vertical scrape coolers. 1 frigoscania plant with a Sab 163 hf and a CO2 plant with a SMC 116 e and 2 HPC 106s's both suppling cooling for 2 Samifi's plate freezers. A coldstore with 2 bitzer screw on NH3 and A/C for the production area being supplied by 2 Grasso recep's. I took part in the commisioning of the the CO2 plant while working for York and to be honest was never overly impressed with the plant. The oil recovery was always an arse on the CO2 side. I have since modified and has been proven to be ok for the last 8 months, plus other minor problems I've had to sort. The plant is now about 2 1/2 years old and since being employed by the site I've kept on top of all the servicing. First I carried out an inspections on all of the comps, a top end service and an oil change on the NH3 comp after finding 3 broken suction valves and numerous valve spring broken. After completing the oil change and top inspections on the CO2 comps everything looked in order. Well I thought, today after being able to shut the plant down I took the opportunity to carry out a oil filter change and top end service on the No1 CO2 comp. All was going well untill I took the last valve out to find mild pitting in the piston's crown, thinking a suction valve was broke but no, so I pulled the liner out to find the rings shattered, plus the ring grooves on the piston looked like they had melted in a fuuny way. Being curious I pulled out all the other liners to find every single piston ring had shattered. I mean each ring in about 6 or 7 pieces, no valves were broken not even a spring, all the liners are ok except for the melted one. York had previosly replaced a comp due to failure, not this one though. I was just wondering if there was anyone out there that has had much to do with HPC106's comps on CO2 and there experiences of them.
Cheers for looking Dober49.