Manual Conrad HD 1688 MRC (page 3 of 8) (English, German, Dutch, French)

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OPERATING INSTRUCTIONS www.conrad.com

Version 05/13

Wireless clock movement

Item no. 43 98 02 wireless step clock movement, 12 mm

Item no. 43 98 03 wireless step clock movement, 14.5 mm

Item no. 43 98 14 wireless step clock movement, 17 mm

Item no. 43 98 15 wireless sweep (non ticking) clock movement, 12 mm

Item no. 43 98 29 wireless sweep (non ticking) clock movement, 14.5 mm

Item no. 43 98 41 wireless sweep (non ticking) clock movement, 17 mm

Intended use

The radio-controlled clock movement is used to display the time.

The time is set automatically using an integrated DCF receiver.

The clock movement is built into a clock-face and equipped with suitable hands.

The product may only be powered by a battery (for the type, refer to "Technical data").

Any other use than the one described above may lead to damage to the product and involves

other risks, such as shorts, ﬁ re, etc.

No part of the product may be modiﬁ ed or rebuilt.

This product complies with the applicable national and European regulations. All names of

The safety instructions have to be followed without fail.

Safety Instructions

The warranty will be void in the event of damage caused by failure to observe

these safety instructions. We do not assume any liability for any resulting

damage.

We shall not accept liability for damage to property or personal injury caused

by incorrect handling or non-compliance with the safety instructions. In such

cases, the warranty will be null and void.

In the operating manual, an exclamation mark inside a triangle indicates im-

portant instructions.

The "Hand" symbol indicates special tips and operating information.

• For safety reasons, any unauthorised conversion and/or modiﬁ cation to the product is not

permitted. Never dismantle the product.

• The product is intended for dry indoor locations only. It must not get damp or wet.

• This product is not a toy and must be kept out of the reach of children. Only use the product

out of reach of children. The product contains small parts and a battery that could be swal-

lowed.

• Condensation may form when the product is brought from a cold room into a warm one.

Therefore, wait until it has reached room temperature before using it.

• Do not leave packaging material carelessly lying around, as it could become a dangerous

plaything for children.

• Do not expose the product to high temperatures, strong vibrations or heavy mechanical

loads.

Batteries and Rechargeable Batteries

Batteries/rechargeable batteries must be kept out of the reach of children.

Do not leave batteries/rechargeable batteries lying around; they could be swallowed by chil-

dren or pets. If they are swallowed, consult a doctor immediately.

• Leaking or damaged normal / rechargeable batteries in contact with the skin can cause acid

burns; therefore, use suitable safety gloves.

• Normal / rechargeable batteries may not be short-circuited, opened or thrown into ﬁ re. There

is a risk of explosion!

• Do not recharge normal, non-rechargeable batteries, risk of explosion! Only charge re-

chargeable batteries that are intended for this purpose; use a suitable battery charger.

• Check that the polarity is correct when inserting the battery/rechargeable battery (pay atten-

tion to plus/+ and minus/-).

Installation

Please proceed in the following order:

1. Attach the suspension bracket onto the hand shaft.

2. Attach the enclosed rubber washer onto the hand shaft.

3. Attach the clock movement from the back through the borehole to the clock-face and align it

horizontally with the suspension bracket facing upwards.

4. Place the washer above the hand shaft and tighten the clock movement with the middle

hexagon nut. In this process, make sure you don't tighten the nut too ﬁ rmly to avoid twisting

and damages.

5. First carefully attach the hour hand to the hand shaft, then the minute hand and at last the

second hand.

6. Adjust all hands to the 12:00 o'clock position.

7. Make sure the hands are aligned parallel to the clock-face so that they don't touch each

other during operation or rub against the clock-face.

8. At last, pull the locking pin out of its borehole. It is located under an adhesive strip on the

casing's rear. This pin locks the clockwork in the 12:00 o'clock position during transport and

storage.

The minute and second hand should not exceed the following dimensions and

weight:

Minute hand: max. 160 mm / 6 g

Second hand: max. 130 mm / 6 g

Location for Use

To ensure correct DCF reception, the clock movement should not be placed next to electronic

devices, cables, metal parts, etc.

Inserting the Battery/Rechargeable Battery

• Insert a battery of type 1.5 V Mignon/AA into the battery compartment on the back of the

casing, observing the correct polarity. The correct polarity is indicated in the battery compart-

ment.

• After inserting the battery, the hands move to the reception position (12:00 noon), and clock

movement starts to search for the DCF signal (see chapter "DCF reception").

• The battery needs to be replaced if the clock stops.

A rechargeable battery may be used, but due to the lower voltage output (recharge-

able battery = 1.2V, standard battery = 1.5V) and the lower capacity, the service life

is shorter.

DCF Reception

Immediately after the battery is inserted, the device makes a ﬁ rst attempt to receive the DCF

signal. The hands of the clock run to the reception position and automatically set themselves to

the current time after successfully receiving the DCF signal.

The recognition and interpretation of the DCF signal can take 3-12 minutes. Do not

move the clockwork, during this time. Do not use any buttons!

Bad reception can occur, for example, by metallised insulated glass, reinforced

concrete buildings, coated special wallpapers, proximity to electronic devices, or

installation in cellars.

If the clock hands do not move to the current time after 12 minutes, change the posi-

tion of the clock movement and press the RESET button on the rear of the housing

using a sharp-pointed object.

This will start a new reception attempt.

The reception attempts for the daily automatic synchronisation with the DCF time is done 12

times a day. One successful reception per day is sufﬁ cient to keep the deviation to less than

one second.

The DCF signal is encoded and transmitted via a DCF trans-

mitter in Mainﬂ ingen (near Frankfurt am Main). Its range is

up to 1500 km and, under ideal reception conditions, even

up to 2000 km.

Among other things, the DCF signal includes the precise

time (theoretical deviation of 1 second in a million years!)

and the date.

Naturally, this also eliminates the hassle of manually setting

summer and winter times.

Starting DCF Signal Detection Manually

Use this function if, for instance, the automatic summer/winter time conversion was not de-

tected or the clockwork has not received the DCF signal for a while.

The previously received DCF data is not deleted and the time resets itself to the time shown

previously, if the signal detection fails.

• To perform a manual search for the DCF signal, press the REC button for 3 seconds.

• The hands run to the reception position (12:00) and the clock movement tries to detect the

DCF signal.

• Wait for about 3-12 minutes, until the current time is indicated.

1500 km

2000 km

My clock does not reset to 12 (it does reset but to a different time). Anything i can do to make it reset to 12 o clock Submitted on 21-7-2023 at 19:44
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Conrad HD 1688 MRC Manual

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