Accumulator Tank - Winnebago Sunflyer Manual

first). Leave hot water faucets on until they
also deliver a steady stream of water. This
will ensure that the water heater is filled with
water.
7. Check to be sure pump stops soon after all
faucets have been closed.
8. Pump is now ready for automatic operation.
Pump will start when a faucet is opened and
stop when the faucet is closed.

ACCUMULATOR TANK

A pressurized accumulator tank is installed in
the water line directly upstream from the water
pump located in the rear compartment on the
driver or passenger side of the coach.
Water Pressure
Accumulator Tank
The accumulator tank holds a small amount
of water under pressure of 20 psi to reduce water
line pulsation noise and pressure variations
when using the water pump system. This also
contributes to longer pump life, less pump
cycling, and less amperage draw by the water
pump from the coach batteries.
NOTE: The accumulator tank has a precharge
pressure which must be checked monthly
and maintained at 20 psi for the system
to work properly.
Adjusting Precharge Pressure
A tire-type valve stem is provided on the end
or top of the accumulator tank to check or add
air pressure.
PLUMBING SYSTEMS
When adding air, do not exceed 20 psi tank
precharge pressure because you may risk ruptur-
ing the pressure bladder inside the accumulator
tank. Before checking precharge pressure, drain
the accumulator tank by turning off the water
pump and opening a faucet to drain off water
line pressure. Because of the relatively small
capacity of the bladder, check pressure with a
standard tire pressure gauge before adding air,
then if necessary, add air in small bursts, check-
ing pressure between each burst until 20 psi is
attained.
Overfilling will also push the bladder too far
and reduce the volume of water held in the
accumulator tank, making the system inefficient.
The precharge valve stem cap must be tight
to prevent pressure leak-down.
Further Information
See manufacturer's information supplied in
your InfoCase for complete maintenance instruc-
tions and precautions.
EXTERNAL WATER
SUPPLY ("City Water")
To connect to an external source:
1. Turn the demand pump switch to Off. Also
be sure fill valve is turned to "City Water" as
shown
2. Attach a hose from the external water source
to the city water connection in the utility
compartment on the left side of your vehicle.
3. Turn on the city water faucet.
SECTION 7
7-3