The Rotary P423-2 electrical control component is the direct replacement for the Rotary lift it came off of. Cross-referenced as ALS-7538-56, it is the genuine Rotary part — same part number, same fit, and same working specification as the one already on your lift. Ordering the Rotary electrical control component from us gets you the OEM piece that matches the lift, not an aftermarket knock-off that is close but not the same. Specifications Part number: ALS-7538-56 Brand: Rotary Type: Genuine OEM electrical control component The electrical side of a lift is what turns wall power into lifting motion: the disconnect and breaker feed a switch or push-button, which energizes a contactor, which sends power to the motor that spins the pump. Limit switches and safety cutoffs sit in the circuit to stop the lift at the top or if an overhead bar is hit. When the lift won't run, the fault is somewhere in that chain — and it's often electrical, not hydraulic. A small electrical fault left alone becomes a bigger, more expensive one. A loose lug that arcs will eventually burn the terminal, then the wire, then the component it feeds. A chattering contactor hammers the motor with partial voltage until the windings cook. Chasing down a hot connection or a pitted switch early is a cheap fix; letting it run until it melts something takes out the motor or the whole control box. Related parts for this lift The parts below are commonly ordered alongside this one — cables, sheaves, seals, and hardware wear on similar schedules, and most repairs go faster when the whole set is done in one visit. OH Limit Switch Assy (over 250V) - Rotary N414 Overhead Limit Switch (under 250V) - Rotary N413-1 Microswitch - Rotary - P461-2 Micro Switch - Rotary - P441-2 Replacing your electrical control component Most lift electrical work follows the same order: verify power is off, trace the circuit from source to motor, replace the failed part, then power up and test both operation and the safety stops. Guessing at where in the chain the fault lives wastes time and risks the wrong part. For that reason the full procedure is worth reading first. Not sure on the procedure? Find your lift in our parts lookup or call and we will walk you through it. Find the right part for your lift Landed here but not 100% sure it is your part? Grab the model and serial from the data plate and open our Rotary parts lookup for the visual breakdown — the manufacturer-style drawing with every item numbered so you can match yours exactly. Plate missing? our guide to finding your model number helps, and we identify lifts from photos every week if you would rather ask. Signs of an electrical fault Use your nose and eyes on the control box. A burnt smell — hot varnish or melted plastic — means something has been overheating: a cooked lug, a scorched contactor, or a failing motor winding. Look for browned terminals, melted insulation, black soot around a contact, and discolored wire. The smell of burnt electrical is never nothing; find the source before you put the lift back in service. Parts commonly replaced at the same time Electrical faults often involve more than one component — a failed contactor can take a relay or a switch with it, and worn wiring shows up alongside. While the panel is open, check the companions so you are not back in there next week. Tell us your lift's voltage and phase and we will match the related parts. Safety notes Isolate the lift from power before you touch any electrical component — lock the disconnect out if the shop has one. Lift control circuits mix line voltage with low-voltage safety inputs, and a miswire can defeat an overhead shutoff or a lock. If you are not confident on the control system, stop and call for help before something moves unexpectedly. Before you order Have the data plate in front of you — model, serial, voltage, phase — before ordering electrical parts. These details decide which relay, switch, or motor fits, and getting them wrong means a return. If the markings on the old component are readable, share them and we will match exactly. Confirm this is the right part before you order Lift manufacturers revise parts mid-production without changing the model name, so the same lift bought two years apart can take two different revisions of the same component. Before you order, find the model plate on the lift — on most 2-post lifts it rides on one of the columns at eye level, on 4-post lifts it is usually on a column or the power-unit side runway — and note the full model number and serial. The serial dates the lift to a production run, and that is what decides which revision fits. If the plate is painted over or missing, take a photo of the part you are replacing next to a tape measure and send it to us. Between the dimensions, the mounting pattern, and what lift it came off of, we can almost always identify the exact part before you spend money on the wrong one. Why buy your Rotary electrical control component from Auto Lift Services We install, inspect, and repair Rotary lifts every week — the ALS-7538-56 is a part we handle in the shop, not a random SKU we drop-ship. The phone answers if you have a question mid-install — call 800-674-9302 — and every part ships genuine, no aftermarket substitution unless you ask for it.
