1. Electrical measurement comparator
Enter an OEM-verified acceptable range and your measured reading. The app checks the numbers, not whether the source is correct. Confirm test conditions, connector pins, isolation and serial applicability first.
2. Parts diagrams and component locations
The available parts catalogs are T-1080S TSA and T-1080R TSA. These are not verified substitutes for T-1080S Spectrum or T-1090 Spectrum parts. Verify the unit serial and catalog applicability before ordering.
3. Multi-alarm and symptom diagnosis
4. Refrigeration flow and measurements
The following is a generic simplified refrigeration flow, not a verified T-1090 multi-temperature valve schematic. Use the correct OEM piping diagram for zone selection, heat/defrost paths, bypasses and valve states.
Compressor → Condenser → Receiver / Liquid Line → Metering Device → Evaporator → Suction Return → Compressor
Superheat and subcooling require saturation temperatures from a valid refrigerant P–T source. No acceptable range is assumed.
5. Offline manuals and complete local backup
Bundled OEM PDFs can be cached for offline use. First open the app online and use the cache button. Browser storage may be cleared or evicted by iOS; keep an original ZIP and exported backup.
Export technician records, reference-workbench notes and indexed imported PDF manuals from this browser as one backup file. Original bundled PDFs remain in the ZIP and are not duplicated in the backup.