SUMMARY Chiller energy usage audit tool for our 2009/2010 US National survey by Legacy Chiller Systems. Video provides instruction on how to input data into the Chiller Energy Usage Audit Tool for our National chiller survey. If you are interested in participating on our National Survey, that will include a no cost Webinar presentation to […]
Video – Chiller Energy Usage Audit Tool – Full Version
SUMMARY Chiller energy usage audit tool by Legacy Chiller Systems. Video provides instruction on how to input data into the Chiller Energy Usage Audit Tool. To get a free copy of this tool contact Legacy Chiller Systems at 877-988-5464. RESOLUTION Video provides instruction on how to input data into the Chiller Energy Usage Audit Tool.
Micro Processor J10 Alarm Contacts
SUMMARY Article covers basic information on the Legacy Micro Processor J10 alarm relays. RESOLUTION Located on the back of the Legacy chiller micro processor controller (top right), there is a J10 terminal designation that is used for remote alarm connections. This block contains a Common (com), normally open (NO) and normally closed (NC) set of […]
Water Cooled Condenser Design Flow Rate Issues
SUMMARY How to determine design flow rate on a water cooled condenser – By Legacy Chiller Systems. SYMPTOMS Water cooled chiller tripping on hi1 (high head) or running higher than normal head pressures. CAUSE This can be caused by several factors: 1. Low condenser cooling water flow. 2. Higher than normal condenser water inlet temperature. […]
Micro-Processor showing 32 and 32
SUMMARY Micro-Processor showing 32 and 32. SYMPTOMS Micro-processor displays 32 and 32 on both top and bottom temperature displays. While in this condition, these temperatures do not change. CAUSE Possible defective sensor(s). One or both temperature sensors are not working property. RESOLUTION Replace both sensors. Note: Replacement may arrive with plastic molded plugs. Older micro-processor […]
hi1 or hi2 compressor shut down
SUMMARY Chiller trip on high head pressure after 60-90 seconds. Possible issue hang with liquid line solenoid. SYMPTOMS Compressor runs for 60 to 120 seconds then shuts down on micro processor hi1 or hi2 pressure trip. CAUSE Possible issue with liquid line solenoid no fully opening. In rare cases, the Sporlan liquid line solenoid my […]
Remote Micro – Can’t turn chiller on and off
SUMMARY Remote micro-processor use – By Legacy Chiller Systems. SYMPTOMS Using remote micro processor user can’t turn chiller on and off. CAUSE Remote micro processor is in review mode. RESOLUTION Press and hold the PUMP and UP buttons at the same time for 3-5 seconds. Control will as for pass code. Using the UP and […]