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PENN Controls Products Catalog

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P28 Series Lube Oil Pressure Cutout Control with Time Delay Description The P28 series provides dependable lube oil protection on pressure of lubricated refrigeration compressors by sensing low lube oil pressure. A built-in time delay switch, accurately compensated for ambient temperature, allows for pressure pick up on start and avoids nuisance shutdowns on pressure drops of short duration during the running cycle. Refer to the P28 and P128 Series Lube Oil Controls with Built-in Time Delay Relay Product Bulletin (LIT-125420) for important product application information. Features • Direct-reading scale indication • Adjustable setpoint • Trip-free manual reset • Replacement timing relays available • Dust-protected switch Applications • Semi-hermetic compressors • P28 Control measures pressure available to circulate oil though the lubrication system (Net oil pressure is the difference between oil gauge and crankcase pressure.) Accessories • All models listed on this page include a universal mounting bracket • Replacement timing relays— refer to Replacement Timing Relays for P28 and P29 Lube Oil Controls Catalog Page (LIT-1927395) 165

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