SECTION 8-PLUMBING SYSTEMS JAYCO TOWABLE
FRESH WATER HOLDING TANK
The fresh water tank can be filled by pressure filling through the fresh water inlet. There
are plastic overflow tubes plumbed into the fresh water holding tank. They allow water to
flow out of the water tank. Occasionally, you may see water coming from the overflow
tubes when the fresh water holding tank is filled. This is normal, and is caused by external
circumstances, including the motor home being parked on an incline, or the motion caused
by starting or stopping the motor home during travel.
12-VOLT WATER PUMP & SWITCH
When you want to use water in your recreation vehicle and it is not hooked up to city
water, you will need sufficient 12-volt DC power to run the water pump.
Once activated, the water pump (also known as the demand pump) will self-prime, and
provide water. The pump is designed for intermittent use only. Using the pump
continuously or with high pressure will shorten the life of the pump and is not covered in
your warranty.
Periodically check the in-line water pump strainer for accumulated debris. To clean, shut
off the water pump, unscrew the clear cap, remove the re-useable metal strainer and clear
any debris, then reinstall.
For additional information on the care and operation of the pump, read the safety and
operating information in the pump manufacturer’s owner’s manual.
Water Pump Switch (if so equipped):
Most water pump switches illuminate when the water pump is activated. In most models,
the (red) pump switch is located on the monitor panel or the utility center. When the water
pump switch is ON the pump runs until 45 lbs. of pressure has been achieved. The red
light will stay on. The water pump automatically recycles when pressure drops. Some
cycling may occur depending on the volume of water being released. Turn the water pump
switch OFF when it is not in use.
NOTE: In some models the water pump switch will be a black rocker switch located
near the sink cabinet
The water pump switch should be in the OFF position when the RV is left unattended
for any amount of time. If something would happen to the water system, this may
help limit water damage to a smaller area.
CAUTION
Do not cap, block or modify the fresh water tank overflow tubes in any way.
Enough water pressure can build up during the filling process to damage the
plumbing system if the overflow tubes are obstructed.
CAUTION
Be careful not to overfill the fresh water holding tank. It can pressurize the tank,
causing leakage and water damage and void the warranty. DO NOT leave the tank
unattended while filling.
8-3
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