The LM500 maintains oil level on any size engine. As crankcase oil level drops, the LM500 float also drops and opens the Thumb-Valve. This allows oil to flow from the supply tank, through the LM500, and into the crankcase. When proper level is achieved in the crankcase, the LM500 float rises, causing the Thumb-Valve to close off further oil flow. The simple and unique Thumb-Valve is non-clogging and provides a positive, leak-free seal. It also supports installations that require a 3-wire, snap-action switch. The LM500 series maintains the crankcase oil level of an engine, pump or compressor. Adjusted to the correct running-oil-level, it will replenish oil as it is used. The low-level switch will alarm and/or shutdown the equipment if supply oil is lost and the equipment continues to use oil. The LM500 is made of die cast aluminum and features a clear "frog eye" high impact lens which allows the operator to view the oil level and condition without shutting down the equipment.
Crankcase Balance Vent Connection: 1/2 NPTF (top)
Inlet Connection: 1/2 NPTF removable screen (side)
Outlet Connection: One connected, two not used (plugged) 2 x 3/4 NPTF (side) 1 x 3/4 NPTF (bottom)
Thumb Valve Material: Viton
Snap-switch: SPDT rating 10 A, 125 VAC; 0.5 A, 125 VDC; 10 A, 30 VDC
Wire leads: 18 AWG x 14 in. ± 2 in. (355 mm) length
Conduit Connection: 1/2 inch conduit (female, top)
Case: Die cast aluminum
Lens: Clear frog eye non-staining, high impact, high temperature polycarbonate; UV and heat stabilized
Dial: High visibility white background with solid green band for normal level indication
Maximum Inlet Pressure: 9.50 psi/25 ft. oil (head pressure)
Maximum Case Pressure: 15 psi (103 kPa)
Maximum Differential: 2 in. (51 mm) between running and stopped
Maximum Ambient Temperature: 250°F (121°C)
Float: 304 Stainless Steel
Flow Rates: Refer to LM500 Series Flow Rates chart for application data
Dimensions: Overall 6-9/16 inch tall x 6-3/16 inch wide x 3-1/2 inch deep
For exact dimensions, refer to document 00-02-0729 LM500 Installation Instructions
