Safe-Heet Preheater, Model 720 FAA/PMA'd

FAA/PMA'd. Safe-Heet Preheater Model 720 Fits Cont. O-470, IO-470, LIO-470, FSO-470, TSIO-470, GIO-470; IO-520, GTSIO-520, LTSIO-520; IO-550. Fits Lyc. O-540, VO-540, TVO-540, IO-540, HIO-540, AEIO-540, IGO-540, IGSO-540, IVO-540, TIO-540, LITO-540, TIVO-540; IO-720. Also, fits Franklin 6A4-150 and 6A4-165. Permanent installation. Thin, flexible, silicone pad bonds to engine oil sump. Heats the air inside the engine. S.T.C. or Form 337 not required (log book entry only). No engine or airframe modifications required. Uses standard 110 AC. Less than 1 hr. will warm engine oil from subzero to safe starting temperature. External ground wire allows engine and airframe to be grounded to electrical outlet, reducing the risk of electrical shock. Unit maintains temperature less than 160'F. NOTE: Where the oil sump area is limited, Model 700 (Cat. No. M-852-001) may be used. 4" Wide x 7" Long. Code 4



Additional Notes: 1. Engine oil sump configurations may vary for specific engine models. There is insufficient oil sump or oil tank area and clearance as specified in the SAFE-HEET Installation Instructions for use of the SAFE-HEET engine heaters on some engine-airframe installations. 2. For dry sump engines, use SAFE-HEET pads on the oil tank. The installor must evaluate as per the SAFE-HEET Installation Instructions the available oil sump or oil tank area below the oil level for use of SAFE-HEET pads on all engine models. 3. 182RG Aircraft are equipped with an O-540 engine. Eligibility shows to use model 720 SAFE-HEET. We have found that there is a limited area to install the 720 model, and customers with a 182RG should use model 700 SAFE-HEET.