the oil filter should be replaced during annual maintenance or when the differential pressure across the filter exceeds the technician's setpoint (typically monitored via the chiller control panel)

it fits standard Class R fuse blocks and includes a rejection feature to prevent the installation of lower-rated fuses

This SPDT temperature switch operates within a 70°C to 120°C (158°F to 248°F) range

Helps optimize combustion efficiency by providing a stable spark at the burner head

This 100VA multi-tap transformer features a primary voltage range of 120/208/240/277/480 VAC

Dwyer Instruments DA-7031-153-9 Pressure Switch 321142-301 the oil filter should beThe Dwyer Instruments DA 7031 153 9 Pressure Switch is a heavy duty Bourdon tube pressure switch designed for precision monitoring in industrial HVACR systems, pump control, and compressor applications. This Mercoid DA Series unit features a robust brass tube material and a 1 4" male NPT process connection, making it a reliable choice for liquid or gas service where compatibility is critical. Engineering grade repeatability of + 1% allows for