I would also add you should always set the slow down magnet on a hydro slighty higher on the bottom floor than normal so you eliminate any problems of the lift going thru the overtravel limits when a temp problem occurs.
Never heard of that, thanks!
Before the advent of MRL lifts became prevelent here we installed roped hydro's as a standard lift. We found if you raise the bottom level slow down magnet on the rail by probably 50-100mm it really makes a difference when temp changes occur. The reason why this type of lift over runs, is the lift is not given enough time to slow and close the down valves in cold oil conditions. The passengers really cant tell the difference when slowing down and it seems to eradicate these temp variation overrun faults.
Vic we are doing one now at a hospital parking garage. Ordered a new pump unit from Minnisota Elevator for 2.8K and got it in less than a week. If we had not had to replace pump motors at least 3 times on these 2 units in the last 7 years I would of considered the OEMs fix. But when you can get rid of 2 problems at one time......
Sometimes you replace the entire pump unit, like Dan did with the hospital parking garage from Minnesota Elevator. Their silencer is an upgrade from the cosmetic chamber mufflers too. Save your labor time and replace, everyone's happy.
