Citizen C52 User Manual

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display) diver’s watch with a depth

(present depth/diving time/maxi-

. Apart from the log data memory from four dives, there is also a ascend-

ing speed alarm function which warns the diver with an alarm sound if the ascending speed is too fast.

Highly Reliable “200m Diving Water-resistant Performance”

The highly reliable water-resistant performance conforms to ISO diver’s watch standards.

* ISO diver’s watch standards have been set by the International Organization for Standardization.

< ISO/6425, May 15th, 1984 >

All repairs on this product, including battery replacement, should be done at a Citizen Service Center. Request repairs or an inspection by Citizen at the place of purchase or send directly to a Citizen Service Center.

English

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Before using the watch, read this instruction

CAUTION manual carefully for safe and correct use. After reading this manual, keep it for your

further reference.

Safety precautions - Instructions to be followed at all times.

In order to prevent injury to yourself or other persons and damage to property, this manual describes the instructions which you should strictly follow:

■Injury and/or damage which might be caused by using the watch improperly, neglecting any of the instructions or precautions in this manual, are classified with the following symbols.

This symbol is followed by instructions the

WARNING negligence of which might result in death or serious injury.

This symbol is followed by instructions the CAUTION negligence of which might result in injury or

damage to property.

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■The instructions for safe operation are classified with the following symbols.

Warning (caution) symbol followed by instructions for safe operation and/or precautions that you should take

Prohibition symbol followed by "don'ts" (what you should not do)

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WARNING

Diving is a fundamentally dangerous sport. When diving with this watch, make sure you fully understand and follow the instructions on handling described in this manual.

The depth measurement function of this watch is not approved as a measuring instrument for official organizations. Use it as an auxiliary or backup instrument.

Diving with this watch is limited to recreational diving (non-decompression diving). Do not use it for decompression diving, saturation diving or diving at high altitude. It can be used in seawater in a temperature range of 10˚C - 40˚C (50˚F - 104˚F), but it does not indicate correct depths in water other than seawater (specific gravity 1.025). The watch’s display and performance are also affected by sudden changes in atmospheric pressure or changes in the water temperature. It must be used in combination with other instruments. Always use this watch’s display as an approximate guide.

Recreational diving involves risks. Use this watch for diving after you have undergone scuba diving training from a qualified instructor, obtained the necessary experience and skills for safe diving, and fully understood the watch’s handling operation.

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CONTENTS
WARNING ..........................................................................................................	6
A. DIVING WITH THIS WATCH .......................................................................	10
DIVING WITH THIS WATCH .......................................................................	10
DEPTH METER FUNCTION .......................................................................	10
FOR SAFE DIVING.....................................................................................	11
PROHIBITION WHEN DIVING....................................................................	12
PRECAUTIONS FOR DIVING ....................................................................	13
DIVING AT HIGH ALTITUDE AND IN FRESHWATER................................	15
B. NAMES AND FUNCTIONS OF PARTS......................................................	16
C. SWITCHING MODES..................................................................................	20
1. TIME MODES [\ DIVING MODES......................................................	21
2. SWITCHING TIME MODES ....................................................................	22
3. SWITCHING DIVING MODES ................................................................	23
D. HOW TO SET THE DIGITAL TIME..............................................................	24
E. HOW TO SET THE ANALOG TIME ............................................................	26
F. HOW TO USE THE ALARM........................................................................	27
G. HOW TO USE THE CHRONOGRAPH........................................................	29

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H. HOW TO USE THE LOG MODE .................................................................	32
I. HOW TO USE THE DEPTH/DIVING TIME ALARM....................................	36
1. HOW TO SET THE DEPTH ALARM .......................................................	37
2. HOW TO SET THE DIVING TIME ALARM .............................................	38
J. HOW TO USE THE DIVE MODE ................................................................	39
1. DEPTH METER DISPLAY.......................................................................	42
2. DIVING TIME MEASUREMENT..............................................................	43
K. THIS WATCH’s WARNING FUNCTIONS....................................................	44
1. ASCENDING SPEED WARNING FUNCTION ........................................	44
2. ABNORMAL DEPTH WARNING FUNCTION .........................................	45
L. IN CASE OF THE FOLLOWING.................................................................	46
M. ALL RESET ................................................................................................	49
N. BATTERY ....................................................................................................	50
O. OTHER FUNCTIONS ..................................................................................	52
1. REGISTER RING ....................................................................................	52
2. NO DECOMPRESSION LIMITS .............................................................	53
P. CARE OF YOUR WATCH............................................................................	54
Q. SPECIFICATIONS.......................................................................................	60
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A. DIVING WITH THIS WATCH

CAUTION DIVING WITH THIS WATCH

•Only use this diving watch after undergoing correct instruction and training in diving and always obey the accompanying rules.

•Make sure you fully understand the handling of the watch and the caution items in order to use it correctly. Please note that the watch may not function correctly if you handle it other than as indicated in this instruction manual.

WARNING DEPTH METER FUNCTION

•This watch’s depth meter function is not approved as a depth meter for official organizations. Use it as an auxiliary or backup instrument.

•Only use this watch’s depth meter values as a guideline.

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CAUTION FOR SAFE DIVING

•Always use the ‘buddy system’ when diving.

•This product is recommended for sports diving to depths of about 15-20m (50-65ft).

•Early battery replacement is recommended. A new battery will last approximately 2 years. (This will vary according to the frequency of use of the depth meter function.)

•Rest fully after diving as specified by safety rules. Riding in an airplane or moving to a high altitude too soon after diving can bring about decompression sickness.

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PROHIBITION PROHIBITION WHEN DIVING

Do not use this watch for diving in the following cases.

• When the low battery warning function is activated.

... When the life of the battery is nearing its end, the second hand moves in 2 second intervals.

•When the watch stops or exhibits any abnormal functioning.

•The depth measurement is outside the assured temperature range.

... The temperature range in which the accuracy of this watch’s depth meter is guaranteed is +10˚C - +40˚C (50˚F - 104˚F).

• In potentially dangerous activities or conditions.

... This watch is not designed for use in maritime emergencies or to prevent sea disasters, etc.

• When using a helium enriched environment.

... This might cause breakdown or damage.

CAUTION PRECAUTIONS FOR DIVING

< Before diving >

•Make sure that the crown is pushed firmly in and locked in place.

•Make sure that the band is firmly attached to the watch body.

•Make sure that there are no cracks, flaws or chips on the watch band or glass.

•Make sure that the register ring will rotate correctly.

•Make sure that the time and calendar are set correctly.

•Make sure that the depth alarm and diving time alarm are set correctly.

•Make sure that the second hand is moving correctly.

*If the second hand is moving in 2 second increments, then the battery is low. Request battery replacement by Citizen at the place of purchase or send directly to a Citizen Service Center.

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< During diving >

•Avoid ascending very quickly to prevent your body from being affected by the bends, etc. Surface at a safe speed of within 9m/30ft. per minute.

This ascending speed is in accordance with the U.S. Navy Diving Manual (1993 edition).

•Never operate the crown or any buttons except button A when underwater. Doing so may result in a fault such as poor water resistance.

•Be careful because the alarm may be hard to hear underwater because of the sound of your breathing.

< After diving >

•After making sure that the crown is locked in place, wash the watch free of seawater, mud and sand using fresh water, then wipe the water off with a dry cloth.

•Do not attempt to remove the sensor cover and remove any dirt or debris clogging the sensor with a sharp instrument. If there is any debris, flush it out with fresh water. If you cannot do so, consult a Citizen Service Center.

CAUTION DIVING AT HIGH ALTITUDE AND IN FRESHWATER

•Be sure to complete special safety training before diving in fresh water or at high altitude.

•Do not use this watch at altitudes over 4,000 meters (13,124ft), because accurate measurement is not possible.

•This watch displays change in depth based on a standard of seawater (density 1.025), so the actual depth in fresh water will be 2.5% greater than the depth displayed.

Example: 20m/66ft (indicated depth) X 1.025 = 20.5m/68ft (actual depth)

The pressure sensor is calibrated to the surrounding pressure at a depth of 0m (0ft) when the watch is switched to Diving Modes. Sealevel is also set to 0m (0ft) when the watch is switched to Diving Modes in a lake at high altitude. However, do not use at an altitude of over 4,000m (13,124ft) because accurate measurement is not possible.

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B. NAMES AND FUNCTIONS OF PARTS

- Read in conjunction with the watch diagram at the beginning of this

manual.			Time Modes		Time Modes
		Name	Time/Calendar	Alarm		Chronograph
A : Button A	Press once		Switches between hours, minutes/seconds/date, day	ON/OFF		Start/Stop
		Press for 2 seconds or more	—	—		—
B : Button B		Press once	—	—		Split time/Reset
		Press for 2 seconds or more	To time/calendar adjustment status	To alarm set time adjustment		—
M : Button M		Press once	To Alarm Mode	To Chronograph Mode		To Time/Calendar Mode
		Press for 2 seconds or more	To Diving Modes	To Diving Modes		To Diving Modes
1: Digital display			A/P, hours, minutes/seconds/date, day	A/P, hours, minutes or OFF		Minutes, seconds, 1/100 seconds
2: Crown			Use to adjust the analog time	Use to adjust the analog time
3: Hour hand			Normally shows “hours”	Normally shows “hours”
4: Minute hand			Normally shows “minutes”	Normally shows “minutes”
5: Second hand			Normally shows “seconds”	Normally shows “seconds”

6: Rotating bezel ... You can use this rotating bezel to approximately measure the diving time and remaining time.

7: Pressure sensor ... Senses water pressure to measure the depth.

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		Diving Modes			Diving Modes
	Name	Log Mode	Depth Alarm Mode		Dive Time Alarm Mode	Dive Mode
A : Button A	Press once	Memo (logged) recall	Depth Alarm correction		Dive time alarm correction	Dive time/max. depth recall
	Press for 2 seconds or more	—	Depth Alarm quick correction		Dive time alarm quick correction	—
B : Button B	Press once	To Dive Mode	To Dive Mode		To Dive Mode	—
	Press for 2 seconds or more	—	—		—	To Log Mode *3
M : Button M	Press once	Shows the following log No. *1	To Dive Time Alarm Mode		To Log Mode	—
	Press for 2 seconds or more	To Time Modes	To Time Modes		To Time Modes	To Time Modes *3
1: Digital display		*2	Set depth		Set dive time (minutes)	Current depth/Dive time/max. depth
2: Crown		Use to adjust the analog time		Use to adjust the analog time
3: Hour hand		Normally shows “hours”			Normally shows “hours”
4: Minute hand		Normally shows “minutes”		Normally shows “minutes”
5: Second hand		Normally shows “seconds”		Normally shows “seconds”
*1 To Depth Alarm Mode when log no. 4 is shown			*3 Pushing the button does not switch the mode during diving (when a depth of
*2 Log No./Dive date/Dive start time/Max. depth/Diving time			1m/4ft or more is shown).
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