Very interesting and informative, Niksch, thank you. Were there many variants of this model of the late 40's with the same clip and barrel ? One sent me pictures of a 134 from the MB book very similar but with the cap band engraved. These caps were not engraved along the side like many other models ?
131-420 FRONT 131-420 REAR AND SIDE PROFILE. SEA-FIRE FIRE SUPPRESSION SYSTEM MONITOR WITH ENGINE SHUTDOWN CONTROL AND HIGH TEMPERATURE ALARM. Part No. 131-420. ELECTRICAL CONNECTIONS. Connect the plug on the back of the panel to the. corresponding plug on the Sea-Fire ESRS shutdown unit. Connect the blue wire to one of the temperature sensor. wires.
If you wire the T280R temperature probe to your 5821 wireless temperature sensor, you can use it for remote freezer temperature monitoring or refrigerator temperature monitoring. Program the Honeywell 5821 as loop 2 with dip switch SW1 off and SW2 dip switch on for freezer temperature monitoring. When the T280R temperature probe detects temperatures above 10Â° F for more than (30) minutes, The 5821 will trigger an alarm. Program the 5821 sensor as loop 2 with both dip switched on for refrigerator temperature monitoring.