Well guys i installed my shocker 240 kit that comes with the 2 gallon tank and the Viar 400 compressor. WHat i want to know is when i honk the horns and the compressor turns on to fill up the tank and it only pumps it up to about 130 to 135 psi then goes off… I thought is was supposed to fill up to 150 psi. Thanks
I don’t have one, but i would think that it may not run all the way up for 2 reasons. One being pump life, and the other being a switch that cuts it off @ 150.
the 400c max psi rate is 150psi and the 2 gallon tank i think it is 150psi max too you can if you want more pressure buy a new pressure switch from hornblasters and the compressor will turn off at 150psi instead 135psi here: http://www.hornblasters.com/products/details.php?i=viair-110-150-psi-pressure-switch-with-relay
Thanks for the reply. i already have that pressure switch. I just dont know why it wont shut off at 150
Negative ghost rider… a new psi switch will not help…
I don’t know if I’m doing this right… but click here…
http://www.trainhornforums.com/showthread.php?t=2285&referrerid=392
Are you using the Dakota Digital 400psi digital gauge?
what type of pressure gauge are you getting this info from?
I have the viar 110/150 psi pressure switch.
ok, so I made a post about this before… and I’m using the Digital 400psi gauge from hornblasters. Mine won’t go above 132psi, MAYBE 134 on a good day. I have yet to get a manual pressure gauge to see if it is accurate.
This was the email that I got back…
"There is nothing wrong with his pressure switch. These are not instruments, they’re parts. Pressure switches may have up to a 7% swing in either direction from rated pressure. Keep in mind that his gauges also have a certain percentage of margin for error as well. The actual pressure could be higher or lower than he is reading as well.
A pressure switch could shut off as low as 134.5 PSI, or as high as 155.5 PSI. The true test of any pressure switch is whether it turns on and off via pressure. If it does – it’s working. If the customer wants a precision pressure switch, he would need to purchase a pressure sensing instrument, which could run upwards of $150-$200 or more"
most definitely get a manual switch, mount it on the tank and then run the digital one in the cab… if one fails you have the other 