We handle Process Cooling, Process Heating and HVAC for manufacturers and processors in Sonoma and Napa counties. That includes installing and servicing Process Chillers and Boilers, and repairing and maintaining HVAC in production spaces.
Problem: A Rooftop AC would not start cooling.
Repair: We found a burned main Control Board. Testing showed the motors were fine, but the Fan Run Capacitors were below spec. We replaced the Control Board and Run Capacitors and tested the system.
Verified outcome: Cooling back online and working well. Heating was left off for a separate diagnosis.
Problem: The AC was not working.
Repair: The unit was shutting down on its High-Pressure Switch because the Condenser Fans were not running. We traced it to a broken terminal at the Condenser Fan Contactor coil and repaired it.
Verified outcome: Unit cooling properly with no further problems.
A maintenance visit checks the Condenser and its Fans, refrigerant pressures, superheat and subcooling, and the Compressors, Contactors and electrical connections. On the fluid side, we check glycol or water concentration and condition, flow, Pumps, Strainers and filters, and test the safety switches, flow switch, sensors and alarms.
It depends on the equipment and how hard it runs. Most Process Chillers need 2 to 4 visits a year, and we set the schedule in your Maintenance & Service Agreement.
Start with the alarm on the Chiller display. Common causes are low flow (a failed Pump, clogged Strainer or filter, air in the loop or a closed Valve), high-pressure trips from a dirty Condenser or failed Condenser Fan, low-pressure trips from a refrigerant leak, or a failed Compressor, Contactor or Relay. A process load that has grown past the Chiller’s capacity can also cause it.
Check for a tripped breaker or disconnect and any alarm on the display. Common causes are a safety lockout from high or low pressure, a flow switch that sees no flow, a phase monitor fault, a failed control power Transformer or Contactor, or a remote start signal that is not enabled.
We size it from your cooling load, temperatures and flow, and confirm it during the quote.
Yes. We rent Air-Cooled Glycol Chillers, Portable Glycol Chiller / Heaters and Portable Glycol Unit Coolers for planned work and breakdowns, and we deliver and hook them up. Request a rental and we’ll confirm size, power and connections for your site.
We’ll follow up to confirm the details and schedule a visit.
Equipment down or production affected?
After-hours service is for Maintenance & Service Agreement customers. Online requests are reviewed during office hours.
(707) 544-1277