Quote:
quote:Originally posted by dieselguy
I'm a bit confused why an accredited / certified / hydraulic guru would recommend holding your slide switch in for several seconds after the first change in tone of the pump usually indicating the slides are fully deployed / retracted?? That's kinda like butting your car up against the inside wall of your garage and spinning the tires a bit just to be sure it's all the way in. Once the slides are all the way in / out, continuing to lay on the slide switch waiting on the pump relief poppet to open (usually a few hundred pounds above what it normally takes to operate the slides) doesn't seem like something this "field tech" would want to openly recommend to others.
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Hi
You need to go back and research your training material. If the bypass opens on more than 50 psi and less than 25 psi above the working pressure it needs some attention.
Now you tell me how else to tell the slides have reached their limit and have sealed against the side of the trailer?
If the pump and bypass valve are set up properly the change in the sound of the pump is the bypass valve opening.
The normal reaction time is between 2 and 4 tents of a second so if you are hearing the change of the sound of the pump your bypass valve is opening regardless of how fast you think you are releasing the switch.
Also if you are moving all the slides at the same time they move normally in relation to their weight but sometimes one of them will not be tight against the trailer and moves again once the last slide reaches it extended or retract position.
If you’re not hearing you pleasure relief valve open then you have no way of knowing all sides are at their fully extended or retracted positions.
The amperage spike when they reach their limit is less than 1 amp.
If you are tripping your circuit breaker before or when your bypass valve open (sound of pump changes) you have a problem with the system somewhere maybe the bypass valve is set several 100 lbs higher than the working pressure then that needs attention but more than likely it is a week circuit breaker.
Just arbitrarily changing the breaker to larger sizes without determining the wire sizes of wires is not recommended by any inelegant technician.
Phil P