SPF Depot stocks replacement TSU (Temperature Sensing Unit) sensors used on Graco, PMC, BOSS, Gusmer and other spray foam proportioners. The TSU monitors heated hose temperature and provides critical feedback to the machine's control system. A faulty TSU can cause hose heat problems, temperature fluctuations, inaccurate readings and E04 thermocouple-related fault codes.
Common symptoms of a failed TSU include:
Browse our TSU temperature sensors below for Graco Reactor, PMC Polymac, BOSS and other spray foam equipment.
SPF Depot Replacement for Graco 117484 Thermocouple for Heater Block
The Graco 117484 Thermocouple is used to monitor heater block temperature on Graco Reactor proportioners. Accurate temperature feedback is critical for maintaining proper material temperature and system performance during spray foam and polyurea applications.
A failed thermocouple may cause temperature faults, inaccurate heater readings, heater shutdowns or difficulty maintaining set temperature.
