Im wondering who has a Emergency Power Unit for their Aerial Device and if they train members to use it? Im more of an Engine guy however being a small combination department I need to know as much as possible.
Our department has a 75 Pierce Heavy Duty Ladder. This truck came with a EPU switch to be used for the outriggers as well as the Aerial device. So some of the questions I have.
This does help..
Douglas B. Watson said:
During our aerial ops class, we explain what the EPU is and demonstrate how to use it. I would suggest following the manufacturer's recommendations on how to use it, I'm sure there are differences between manufacturers.
With only the battery switch on, we demonstrate by lowering the boom. The manufacturer recommends it only run for a maximum of 10-minutes and should be used only for lowering or getting the aerial away from a dangerous area.
We don't require the EPU to be checked as part of daily/weekly/monthly maintenance.
Hope this helps, Doug
Yes the emergency hydraulic pump is included in our Aerial Evolutions that we received from Albuqurque NM. We train to know what it is and how to operate it. We do not operate it because it is not designed to work for a long period of time. I believe it is 10 seconds a minute.
We have a 1993 Pierce aerial platform (tower ladder). The EPU is an electrica motor pump. Pierce states to run it no logner than 7 minutes and when that is reached to allow it to rest for 30 minutes before using again. Any EPU should be able to run without the vehicle's diesel motor running; that's its job - to power the aerial if the PTO fails. Also, on our Pierce it is the same pump used by the EPU that runs the platform leveling switch in our cab.