Redring 620 User Manual

SHOWER HANDBOOK

IMPORTANT:

Please retain this booklet for future reference

CONTENTS

How to use your shower …………… 2
How your shower works …………… 3
What to do if things go wrong …………… 5

Installation instructions ………….... 6

How to maintain your shower …………… 10
Guarantee …………… 12

Page

How to use your shower

1. Ensure the electricity and water are turned on to the
unit

2. Function of controls : -

KNOB “A” – Power selector. (On/off 600 only)

KNOB “B” – Adjusts the flow / temperature of the water

BUTTON “C”– Starts and ‘Shuts down’ the shower and cools the water automatically for
(620 only) the next shower.

3. Turning the unit on
Model 600 – Rotate knob “A” clockwise a ¼ turn (one click) this will select full power, the

normal setting, further turns change the power setting (see above).

Model 620 – Press button “C”. (Rotating knob “A” selects the power level, full power being

the normal setting - see above).

4. You will now need to adjust the temperature of the water. Rotate knob “B”. If the
temperature is too low rotate knob “B” anti clockwise and allow 20 seconds for the
temperature to settle. Repeat this procedure until the temperature is to your liking.

5. If the temperature is too high then turn knob “B” clockwise allowing 20 seconds between
adjustments. The final adjustment can be anywhere on the scale. See diagram 2 for
relationship of flow to temperature.

6. Clockwise makes the temperature cooler, anti-clockwise makes the temperature warmer.

7. Once a temperature setting to your liking has been achieved knob “B” will rarely need
adjusting, e.g. Adjust for variations of incoming mains water temperature between summer
and winter.

8. The options of Medium or Low, reduces the power used giving a cooler shower or the
option of reduced flow. These options are mainly for summer usage and knob “B” will have
to be re-adjusted. The cold option (620 only) supplies water with no heat.

9. When you have finished showering.

Model 600 - Rotate knob “A” to the 12 o’clock position ( ). The electricity is switched off

and the water will cease to flow immediately.

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Model 620 - Press button “C”. The electricity to the elements is then switched off, water

will continue to flow for approximately 5 seconds before switching off. This
reduces the temperature of the water in the unit.

Switch the electricity off at the ceiling switch or local isolator.

10. Your shower is designed to stabilise temperature changes caused by water pressure
fluctuations. These can result from toilets being flushed or taps being turned on or off.
When this happens your showering temperature will be held within a controlled band,
provided that the minimum pressure required by the shower is maintained.

11. Your shower requires a minimum operating pressure of 100 kPa (1.0 bar, 14.5 p.s.i.). At
pressures above 100 kPa (1.0 bar, 14.5 p.s.i.) it will minimise temperature fluctuations
detailed in note 9. If the water pressure falls below 100 kPa (1.0 bar, 14.5 p.s.i.), it is likely
that the pressure switch will turn off the power to the heating elements, resulting in a cold
shower.

12. During normal operation if the shower senses an overheated water temperature then the
thermal cutout will switch off the heating elements. Water will continue to flow and as the
water temperature falls the heating elements will be turned back on. If the unit continues to
do this then increase the flow rate by turning knob “B” clockwise and check that the handset
does not require de-scaling. If it still continues, then rotate knob “A” to the MEDIUM power
setting, six o’clock position (Knob B will need adjusting).

13. Note that knob “B” IS NOT A TAP and does not turn the water off.

WARNING! DO NOT SWITCH THE SHOWER ON IF YOU SUSPECT IT OF BEING FROZEN.
WAIT UNTIL YOU ARE SURE IT HAS THAWED OUT.

Redring After Sales Service

We offer a technical advisory service on the telephone to contractors and other customers with
problems in the field.

RING 0870 9000 430

Spare parts can be supplied against any debit or credit cards.

RING 0870 0102 829

Remember to quote the exact type of shower, as written on the front of the shower and on this
leaflet. It may also be of use to have a note of the catalogue number and serial number as stated
on the underside of the shower

How your shower works

Your 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 heating tube.

2. The required water temperature is achieved by adjusting
the rate of water flow. Diagram 2 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 mains can vary considerably

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throughout the year from 5 to 20°C. This means that in Winter, the flow rate will be less
than in the Summer to achieve the same outlet temperature. In summer the ‘MED
(medium)’ or ‘LOW’ power setting may give adequate hot water.

The heaters are only switched on when sufficient water is flowing. This is done automatically with
a switch, which works on water pressure.

3. The water is turned on and off by
the solenoid valve built into the
shower. This is switched on by
rotating Knob “A” (pressing button
“C” - model 620 only)

4. The flow of water is automatically
held at the level set by the user
even though the supply pressure
may vary. (See ‘How to use your
shower’ note 9).

5. If the water supply falls below a set
limit, the pressure switch will operate
and switch off the power to the
elements.

6. As a further safeguard, a thermal
cutout switches the power off if the
water temperature climbs above a
set limit. The cutout gives an audible
click when it switches off, but will
reset itself if water is run through the
shower for 10 to 20 seconds.

7. The pressure relief device is to
safeguard against extreme abuse conditions.

8. There are 3 defined spray plate settings adjustable by rotating the spray plate, (see
diagram 4). If desired many combinations between the 3 can be achieved. (Model 600 has
a different shape handset but the modes are the same). The modes have a positive to
identify them.

Diagram 4

IN ORDER TO MAINTAIN THE PERFORMANCE OF YOUR SHOWER YOU MUST CLEAN THE
SHOWERHEAD.

All water contains particles of lime, which build up in the showerhead and unit reducing the
performance. It is therefore important to clean the showerhead by regularly rubbing the rubber
spray nozzles or, in severe cases dipping the spray plate into a suitable de-scaling solution.

The frequency of this will vary from weekly to quarterly depending on the water hardness and

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experience.