I need some advice and maybe help with the basics:
I have a Budzar (AC-08) 8 ton air cooled water chiller hooked up to my process. 35gpm/40 psi centrifugal pump. Feed/return lines are 2 inch, 32 foot climb up to my cooling line loop. 1" feeds from that to my process.
The chiller maintains a 7 to 10 degree F differential, but the water temp climbs up. The compressor runs, no cycle. Pressure on the exit of the pump jumps between 25 and 35 psi. Even when I shut down my process it take awhile for the water temp to come down. I have used similiar sized chillers in the past that have had no problems.

I have tried opening a cross over valve in my main cooling loop lines to make sure I have good flow through the chiller. Before I did this the compressor would shut off with a low pressure fault.(refrigerant).
The chiller charge has been checked, pump, strainer and other lines checked.

The chiller is not new to the company. Could the heat exchanger be scaled up?

Or is my pump just not big enough?
Past chiller I have used had the same flow but higher pressure capacity. Other plant had only 20 foot high lines.

I was told if there is not enough flow through the chiller it won't cool right.

Any help or pointing to some info to help would be appreciated.