Lunar Caravans 2016 Ariva, Руководство пользователя

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SERVICES
42
2. Leave the power supply turned on.
3. Tighten the adjusting screw (clockwise).
The pump should now be running.
4. Partly open one cold tap to allow water to
flow at about 1 pint per 15 seconds.
5. Now slowly loosen the adjusting screw
until the switch starts to click. The switch
will then be properly adjusted.
Helpful Hints
a) If the pump will not run:
• Pump could be faulty or a wire
disconnected.
• Check that the pump isolating switch is
turned on.
b) If the pump cycles on/off:
• Battery voltage may be too low (at or
below 10.5 Volts). Adjust switch (see text)
and/or recharge battery.
• Check for air or water leaks in taps and
piping. Re-adjust pressure switch.
• Non-return valve may be held open by
grit.
Study the exploded drawing and remove the
three assembly screws to gain access to the
non-return valve.
c) If a pump motor runs steadily and will not
stop:
• Battery voltage may be too low (at or
below 10.5 volts)
• Check all connections in the pipe-work.
• Remove the adjusting screw, if motor still
runs, pump is probably air locked. Turn
off the isolator switch and reprime the
pump (see text).
PRESSURE SWITCH
Operation
The pressure switch detects the opening or
closing of any tap in the system and switches
the pump on or off accordingly. It is located
near the water heater.
To prime if fitted with a submersible
pump:
1. Trapped air in the submersible pump will
not allow the pump to prime. Air can be
released by gently shaking the pump
under water while the pump is in the
water tank but is switched off.
2. If an external submersible pump is used,
place the pump in the water before
connecting to the side of the
van.
At normal flow rates the pump should
operate continuously — but at low rates the
pressure switch will cycle on and off to
maintain back pressure in the pipework.
Adjusting the pressure switch:
If the battery voltage is not constant, cycling
may occur. This can be minimised by
adjusting the switch’s diaphragm sensitivity
as follows:
1. With the system properly primed, close
all taps and showers.
Pressure switch