Teledyne Laars 2414632 Pressure SwitchUsed on the following models: CB-M2-150 thru 250 N or L, HW-M2-100L, HW-M2-100N, HW-M2-130L, HW-M2-130P, cb-m2-200wThe Pressure Differential Switch is a normally open singlepole switch which is designed to detect pump operation andwater flow. To replace, turn off electrical power & boiler feedwater. Valve off and drain 1 or 2 gallons of water from the boiler,unplug wires from the switch and remove switch. Install newswitch in reverse order. Refill boiler and bleed air from the coilbleed petcock. Turn on electrical power and recycle system.
