Basic RV water system....'city water' & on-board pump supply the same hot/cold plumbing system.
When hooked up to 'city water' no need to use on-board pump/fresh water tank and vice versa.......use pump no need for city water.
Pump is an 'on demand' pump.....when turned ON should only run when a demand for water occurs (opening a faucet). Then when done using water pump will shut off when pressure reaches stop set point (45-55#)
If pump turned ON and connected to city water source, pump will run IF city water pressure is lower than pump start set point (30-40#)
Other campers having LOW pressure issues also???
LOW city water pressure could be campground problem (lack of system pressure etc.) OR could be clogged inlet strainer.
Remove hose from city water connection.......check gasket/strainer for debris....clean if needed.
If strainer is clean..low pressure could be caused by faulty inlet check valve (part of city water connection). Replace inlet assembly.
Waste holding tanks.......
Your 5th wheel should have one (1) black tank (toilet) and one (1) grey tank (shower/sinks).
Both dump valves should drain thru a common dump line.
One dump valve for each tank.
Get a clear 45* or 90* sewer adapter......goes on end of dump line then sewer hose connects to it.
Open a valve and you will know which tank it is coming from. Then label which valve is for which tank....black or grey.
When camping.........let black tank get as full as possible before dumping (add water via toilet or flush system if needed). High volume/weight of liquids carries the solids out better.
Never leave black tank drain valve open........leave closed until time to dump.
After dumping black tank. Rinse and flush then close valve.
Then dump grey tank......soapy water helps flush/rinse drain line/sewer hose.
After dumping completed...add a few gallons of water back into black tank.
Keeps black tank bottom wet (stuff won't stick) and tank is ready to use again.
Is it time for your medication or mine?
2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31