Redring EXPRESSIONS 570 - Manual (Page 3)

the option of reduced water flow. This option
is mainly for summer usage and if this is used
then knob 'B' must be re-adjusted.
8. When you have finished showering turn knob
'B' fully clockwise to the ' • Stop' position.
The motor will switch off and water will stop
flowing. The 'POWER ON' light will also
switch off.
9. Switch off the electricity at the ceiling switch
or local isolator.
10. During normal operation if an overheated
water temperature is sensed by the shower
the thermal cut-out will switch off the power
to the heating elements. The 'overheat' light
will illuminate to provide a visual indication that
this has taken place. Water will continue to
flow and as the water temperature falls the
heating elements will be switched back on. If
the 'overheat' light continues to cycle turn
knob 'B' anti-clockwise to a lower number on
the temperature scale and check that the
handset does not require de-scaling (see
page 4). If the 'overheat' light still continues
to cycle turn knob 'A' to the '
• low power '
setting (knob 'B' will need adjusting).
If the shower is operated after it has recently
been used the 'overheat' light may illuminate
for a few seconds. This indicates there is still
some hot water left in the shower. Either, wait
a few moments for the light to go out or turn
knob 'B' anti-clockwise to a lower number on
the temperature scale.
WARNING! DO NOT SWITCH THE
SHOWER ON IF YOU SUSPECT IT OF
BEING FROZEN. WAIT UNTIL YOU ARE
SURE IT HAS THAWED OUT.
HOW YOUR 'REDRING' SHOWER
WORKS
Your Redring shower is designed for
convenience, economy and safety of use.
1. Water is heated instantaneously as it flows
over the heating elements in the copper
cylinder assembly.
2. The required
water temperature
is achieved
by adjusting the
rate of water
flow. Diagram 3
shows the
principle
involved in
relating
temperature rise to flow rate. The higher the
water flow the lower the temperature rise and
vice versa. The temperature of the water
supplied from the cold water storage cistern
can vary considerably throughout the year
from as low as 5º to as high as 30ºC. This
means that in the winter, the flow rate will be
less than in the summer to achieve the same
outlet temperature. In summer the '
• low
power ' setting may give adequate hot water.
3. Your shower incorporates a pump which
boosts the incoming water pressure to a level
more suitable for showering. The motor is
controlled by a switch connected to knob 'B'.
4. The heaters are only switched on when
sufficient water is flowing. This will happen
when the motor is switched on, and is done
automatically with a switch which works on
water pressure.
5. The water is turned on and off by a tap that is
built into the shower.
6. If the water supply falls below a set limit, the
pressure switch will operate and switch off the
power to the elements.
7. As a further safeguard, a thermal cut-out
switches the power off if the water
3
Diagram 2
Diagram 3