LiftMaster TDC LiftMaster MAXUM Commercial Door Operator Overview - English - Page 32

Step 2 Select required install components Accessories and install kits are essential in ensuring both seamless and efficient operation of your MAXUM operator. The Partner Portal will automatically select the required installation components based on your selected operator and application, providing a smooth operation that prioritizes safety. JHDC units come standard with 25 feet of hoist chain, which is enough for 16 feet of total height. For doors above 16 feet of total height, additional 25-feet chain packs can be ordered. Additional hoist chain for JHDC units on oversized doors Determine total hoist chain needed by adding any extra high lift to door height. Doors over 16ft in height will need extra hoist chain, as well as sectional doors with high lift that when added exceed 16 ft of total height. Required sprocket for JDC and JHDC operators A sprocket is required for installation of each JDC and JHDC operator. See sprocket table below for suggested sprocket selection to safely achieve recommended door speed. Amount of additional hoist chain needed for JHDC units on taller doors. Model 1910929FT25 Total Height (ft.) Chain packs now come in 25ft, additional chain packs needed: 0 - 16 0 17 - 29 1 30 - 41 2 42 - 50 3 NOTE: Additional Hoist Chain will be auto-calculated in the Partner Portal based on door height and any extra high lift or vertical lift provided. Bore and Keyway Description Keyway Tooth Count: Sprocket tooth count is recommended to optimize the speed of the doors at 12" per second (on sectional doors). Keyway: Slot machined in the bore and shaft that holds the key, ensuring proper torque transmission. Teeth Key Keyseat Bore: Center hole of sprocket-must match in diameter with shaft. Bore REQUIRED Sprocket selection for JDC or JHDC operators only Weight Characteristic of Door 700 Door Type Sectional Sprocket with Key Kits (For #50 Chain), needed for JDC and JHDC Tooth Count 1 in. Bore, 1/4 in. Keyway 1.25 in. Bore, 1/4 in. Keyway 1 in. Bore, 3/8 in. Keyway 16 71-1550B16LGH 71-1550B16QGH 1200 Sectional 22 71-1550B22LGH 71-1550B22QGH 2200 Sectional 32 700 Rolling, Uninsulated 50 700 Rolling, Insulated 60 1200 Rolling, Insulated and Uninsulated 72 2200 Rolling, Insulated and Uninsulated 82 71-1550B32LGH 71-1550B50LGH 71-1550B60LGH 71-1550B72LGH 71-1550B82LGH NOTE: 3/8 in. keyway options are only available for rolling door applications. 71-1550B32QGH 71-1550B50QGH 71-1550B60QGH 71-1550B72QGH 71-1550B82QGH 71-1550B50LKH 71-1550B60LKH 71-1550B72LKH 71-1550B82LKH 1.25 in. Bore, 3/8 in. Keyway 71-1550B50QKH 71-1550B60QKH 71-1550B72QKH 71-1550B82QKH 30