Sentek SK40 User manual

SINGLE STATION PHOTOELETRIC

SMOKE ALARM SK40

SENTEK ' s single station photoelectric smoke alarm is designed to sense

smoke that comes into the alarm chamber. It does not sense gas, heat or

flame.This smoke alarm is designed to give early warning of developing

fires by giving off the alarm sounds from its built-in buzzer.It can provide

precious time for you and your family to escape before a fire spreads.

However, the smoke alarm makes such pre-warning of fire accident

possible, only if the alarm is located, installed, and maintained properly

as described in this User's Manual.

•Install a minimum of two alarms in any household.

•Install a smoke alarm inside every bedroom.

•Install smoke alarms at both ends of a bedroom hallway if the hallway

is more than 40 feet (12 meters) long.

•Install a smoke alarm inside every room where one sleeps with the door

partly or completely closed, since smoke could be blocked by the closed

door and a hallway alarm may not wakeup the sleeper if the door is closed

•Install basement alarms at the bottom of the basement stairwell.

• Install second-floor alarms at the top of the first-to-second floor stairwell.

Figure 1: LOCATIONS FOR PLACING SMOKE ALARMS FOR

SINGLE RESIDENCE WITH ONLY ONE SLEEPING AREA

Figure 2: LOCATIONS FOR PLACING SMOKE ALARMS FOR

SINGLE-FLOOR RESIDENCE WITH MORE THAN ONE

SLEEPING AREA

WARNING: This smoke alarm is designed for use in a single residential unit

only, which means that it should be used inside a single family home or

apartment. It is not meant to be used in lobbies, hallways, basements, or

another apartment in multi-family buildings, unless there are already working

alarms in each family unit. Smoke alarms, placed in common areas outside

of the individual living unit, such as porches or in hallways, may not provide

early warning to residents. In multi-family buildings, each family living unit

should set up its own alarms.

WARNING: This alarm is not meant to be used in non-residential buildings.

Warehouses, industrial or commercial buildings, and special purpose

non-residential buildings require special fire detection and alarm systems.

This alarm alone is not a suitable substitute for complete fire detection

systems for places where many people live or work, such as hotels or motels.

The same is true of dormitories, hospitals, nursing homes or group homes of

any kind, even if they were once single family homes. Please refer NFPA 101,

requirements for fire protection in buildings not defined as "households".

Smoke alarms should be installed in accordance with the NFPA Standard 74

(National Fire Protection Association, Batterymarch Park, Quincy, MA 02169).

For complete coverage in residential units, smoke alarms should be installed

in all rooms, halls, storage areas, basements, and attics in each family living

unit. Minimum coverage is one alarm on each floor and one in each sleeping

area and attics in each family living unit. Minimum coverage is one alarm on

each floor and one in each sleeping area.

Here, we have useful tips for you：

•Install a smoke alarm in the hallway outside every separate bedroom

area, as shown in Figure 1. Two alarms are required in homes with two

bedroom areas, as shown in Figure 2.

• Install a smoke alarm on every floor of a multi-floor home or apartment,

as shown in Figure 3.

LOCATIONS TO INSTALL YOU SMOKE ALARMS

INTRODUCTION

Figure 3: LOCATION FOR PLACING

SMOKE ALARMS FOR A

MULTI-FLOOR RESIDENCE

LOCATIONS NOT TO INSTALL YOUR SMOKE ALARMS

Be sure no door or other obstruction blocks the path of smoke to the

alarm.

•Install additional alarms in your living room, dining room, family room,

attic,utility and storage rooms.

•Install smoke alarms as close to the center of the ceiling as possible. If

this is not practical, put the alarm on the ceiling, no closer than 4 inches

(10 cm) from any wall or corner, as shown in Figure 4.

•If ceiling mounting is not possible and wall mounting is permitted by your

local and state codes, put wall-mounted alarms between 4 and 6 inches

(10~15 cm) from the ceiling, also see Figure 4.

•If some of your rooms have sloped, peaked, or gabled ceilings, try to

mount alarms 3 feet (0.9 meter) measured horizontally from the highest

point of the ceiling as shown in Figure 5.

Figure 4: RECOMMENDED

BEST AND ACCEPTABLE

LOCATIONS TO MOUNT

SMOKE ALARMS

Figure 5: RECOMMENDED

LOCATION TO MOUNT

SMOKE ALARMS IN

ROOMS WITH SLOPED,

GABLED, OR PEAKEDCEILING

included in 2-4.1.1 above. However, the use of additional alarms remains

the option of the householder. " We recommend complete coverage and

use of additional smoke alarms.

• In damp or very humid areas, or near bathrooms with showers. Moisture

in humid air can enter the sensing chamber, then turns into droplets

upon cooling, which can cause nuisance alarms. Install smoke alarms

"Early warning fire detection is best achieved by the installation of fire

detection equipment in all rooms and areas of the household as follows: (1)

A smoke alarm installed in each separate sleeping area (in the vicinity, but

outside of the bedrooms), and (2) Heat or smoke alarms in the living

rooms, dining rooms, bedrooms, kitchens, hallways, attics, furnace rooms,

closets, utility and, storage rooms, basements and attached garages."

For your information, NFPA Standard 74, Section 2-4 reads as follows

"2-4.1.1 Smoke alarms shall be installed outside of each separate sleeping

area in the immediate vicinity of the bedrooms and on each additional story

of the family living unit including basements and excluding crawl spaces and

unfinished attics.

The provisions of 2-4. 1.1 represent the minimum number of alarms required

by this standard.. It is recommended that the householder consider the use

of additional smoke alarms for increased protection for those areas separated

by a door from the areas protected by the required smoke alarms under

2-4.1.1 above. The recommended additional areas are living room, dining

room, bedroom(s), kitchen, attic (finished or unfinished,) furnace rooms,

utility room, basement, integral or attached garage, and hallways not

Mobile homes and RVs built after about 1978 were designed and insulated

to be energy-efficient. In mobile homes and RVs built after 1978, smoke

alarms should be installed as described above. Older mobile homes and

RVs may have little or no insulation compared to current standards. Outside

walls and roofs are often made of non-insulated metal, which can transfer

thermal energy flow from outdoors. This makes the air right next to them

hotter or colder than the rest of the inside air. These layers of hotter or colder

air can keep smoke from reaching a smoke alarm. Thereby, install smoke

alarms in such units only on inside walls. Place them between 4 and 6

inches (10 - 15 cm) from the ceiling. If you are not sure how much insulation

is in your mobile home or RV, then install the alarm on an inside wall. If the

walls or ceiling are unusually hot or cold, then install the alarm on an inside

wall. Install one alarm as close to the sleeping area as possible for minimum

security, or install one alarm in each room for security. Before you install

any alarm, please read the following section on "LOCATIONS NOT TO

INSTALL YOUR SMOKE ALARMS".

LOCATIONS TO INSTALL YOUR SMOKE ALARMS

IN MOBILE HOMES AND RVs

Figure 6: RECOMMENDED

SMOKE ALARM LOCATIONS

TO AVOID AIR STREAMS WITH

CAUTION

(As required by State Fire Marshall)

Nuisance alarms take place when smoke alarms are installed where they

will not work properly. To avoid nuisance alarms, do not install smoke alarms

in the following situations:

• Combustion particles are the by-products of something that is burning

Thus,in or near areas where combustion particles are present you do

not install the smoke alarms to avoid nuisance alarms, such as kitchens

with few windows or poor ventilation, garages where there may be

vehicle exhaust, near furnaces, hot water heaters, and space heaters.

•Do not install smoke alarms less than 20 feet (6 meters) away from places

where combustion particles are normally present, like kitchens. If a

20-foot distance is not possible, e.g. in a mobile home, try to install the

alarm as far away from the combustion particles as possible, preferably

on the wall. To prevent nuisance alarm alarms, provide good ventilation

in such places.

IMPORTANT :

For any reason, do not disable the alarm to avoid

nuisance alarms.

• When air streams passing by kitchens, the way how an alarm can sense

combustion particles in normal air-flow paths is graphically shown in

Figure 6, which indicates the correct and incorrect

smoke alarm locations concerning this problem.

LOCATIONS TO INSTALL YOUR SMOKE ALARMS IN MOBILE

ALARMS.....

TABLE OF CONTENTS

ALARMS

SILENCE FUNCTION

ALARMS

Never remove batteries to stop a nuisance alarm. Pressing

the test button and after releasing it, the alarm will be hushed about 9

minutes. Then Open a window or fan the air around the alarm to get rid of

the smoke. The alarm will turn itself off when the smoke is gone. If

nuisance alarms persist, attempt to clean the alarm as described in this

User's Manual.

Do not stand close to the alarm when the alarm is sounding.

The alarm is loud in order to wake you in an emergency. Too much

exposure to the horn at close range may be harmful to your hearing.

Model SK40 smoke alarms are to be mounted on the ceiling or on the

wall if necessary. Since SK40 smoke alarm is a single-station type, it

cannot be linked to other alarms.

Read "LOCATIONS TO INSTALL YOUR SMOKE ALARMS" and

"LOCATIONS NOT TO INSTALL YOUR SMOKE ALARMS" section in

this Manual first, then decide where to install an alarm.

Please follow these steps to install your smoke alarm:

1. At the place where you are going to install the alarm, draw a horizontal

line six inches long.

2.Remove the mounting bracket from your unit by rotating it

counterclockwise.

3. Place the bracket so that the two longest hole slots are aligned on the

line. In each of keyhole slots, draw a mark to locate a mounting plug

and screw.

4. Remove the bracket.

5. Using a 3/16-inch (5mm) drill bit, drills two holes at the marks and

insert plastic wall plugs. Put the alarm away from getting plaster dust

on it when you drill holes for mounting.

INSTALLING YOUR SMOKE ALARMS

The alarm could be caused by a nuisance situation. Cooking smoke or

adusty furnace, sometimes called “friendly fires”can cause the alarm

to sound. If this happens, open a window or fan the air to remove the

smoke or dust. The alarm will turn off as soon as the air is completely

clear.

The red LED, as the ALARM indicator, is featured with the alarm. It

can be seen through the test button on the cover of the alarm. When

red LED flashes once 32 seconds, it indicates the alarm under normal

operation. When smoke alarm senses smoke and simultaneously

sounds an audible alarm, the red LED will flash very frequently, once

0.5 seconds.

RED LED INDICATOR

TESTING YOUR SMOKE ALARMS

at least

10 feet (3 meters) away from bathrooms.

•In very cold or very hot areas, including unheated buildings or outdoor

rooms. If the temperature goes above or below the operating range

of smoke alarm, it will not work properly. The temperature range for

your smoke alarm is 32 °F to 120 °F (0 °C to 50 °C).

• In very dusty or dirty areas, dirt and dust can build up on the alarm's

sensing chamber, to make it overly sensitive. Additionally, dust or dirt

can block openings to the sensing chamber and keep the alarm from

sensing smoke.

• Near fresh air vents or very drafty areas like air conditioners, heaters

or fans, fresh air vents and drafts can drive smoke away from smoke

alarms.

•Dead air spaces are often at the top of a peaked roof, or in the corners

between ceilings and walls. Dead air may prevent smoke from reaching

an alarm. See Figures 4 and 5 for recommended mounting locations.

•In insect-infested areas. If insects enter an alarm's sensing chamber,

they may cause a nuisance alarm. Where bugs are a problem, get rid

of them before putting up an alarm.

•Near fluorescent lights, electrical "noise" from fluorescent lights may

cause nuisance alarms. Install smoke alarms at least 5 feet (1.5meters)

from such lights.

WARNING:

SILENCE FUNCTION

Test the alarm weekly by pressing the test button with your figure until

the buzzer sounds. This is the only way to be sure that alarm is

working correctly. If the alarm fails to test properly, have it repaired or

replaced immediately.

never use an open flame to test the alarm. You may set

fire to damage the alarm, as well as your home. The built-in test switch

accurately tests all the alarm functions.

When you are not testing the unit and the alarm buzzer

sounds a loud continuous sound, this means the alarm has sensed

WARNING:

If the alarm buzzer begins to beep once 32 seconds at the same time

the LED flashing, this signal means that the alarm’s battery is weak.

Replace new battery immediately. Keep fresh batteries on hand for this

purpose.

warranty for this smoke alarm. No agent, representative, dealer, or

employee of the company has the authority to increase or alter the

obligations or limitations of this warranty. The company’s obligation of

this warranty shall be limited to the repair or replacement of any part of

the alarm which is found to be defective in materials or workmanship

under normal use and service during the five year period commencing

with the data of purchase.

During the initial one-year period commencing with the data of

purchase, such repair or replacement shall be made without charge.

During the latter four years of the warranty period, such repair or

replacement shall be made at a charge to the customer not to exceed

the manufacturer’s cost. Units in need of repair should be returned,

shipping prepaid, to customer. Service Department, Ningbo Sentek

Electronic Co., Ltd.-448 Yingchun Road, Wangchun Industrial Zone,

Ningbo City 315175, Zhejiang ,China.

The company shall not be obligated to repair or replace units, which

are found to be in need of repair because of damage, unreasonable

use, modifications, or alterations occurring after the data of purchase.

The duration of any implied warranty, including that of merchantability

or fitness for any particular purpose, shall be limited to the period of

five years commencing with the data of purchase. In no case shall the

Company be liable for any consequential or incidental damages for

breach of this or any other warranty expressed or implied whatsoever,

even if the loss or damage is caused by the company’s negligence or

fault. Some states do not allow the exclusion or limitation of incidental

or consequential damages, so the above limitation or exclusion may

not apply to you. SENTEK makes no warranty, expressed or implied,

written or oral, including that of merchantability or fitness for any

particular purpose, with respect to the batteries. This warranty gives

you specific legal rights, and you may also have other rights which vary

from state to state.

purchase receipt for the proof of buying SENTEK alarm from our

authorized dealers. NO warranty can be offered without the original

purchase receipt.

If nuisance alarms keeping coming from alarm, you should

check whether the alarm’s location is adequate. Refer to section

“WHERE TO INSTALL SMOKE ALARM” Move your alarm if it is not

located properly. Clean the alarm as describe above.

Clean alarm cover when it gets dirty. First open the cover and remove

battery. Hand-wash cover with cloth dampened with clean water. Dry it

with lint-free cloth. Do not get any water on the alarm components.

Replace the battery, and close cover. Test alarm to make sure that

battery works correctly.

FIVE YEAR LIMITED WARRANTY

To keep your alarm in good working order, you must test the alarm

weekly, as referring to section “TESTING YOUR SMOKE ALARM”

9Volt GP1604S Carbon-Znic battery with SK40 for one year lifetime

operation. Replace the alarm battery once a year or immediately when

the low battery “beep” signal sounds once 32 seconds at same time

the LED flash.

TAKING CARE OF YOUR SMOKE ALARMS

Smoke Sensitivity 0.08~0.13dB/m

Alarm sound level 85dB/3meters

Battery Life One year\9Volt GP1604S battery

Quiescent current <8uA

Alarm current <20mA

Temperature Range -10℃~ 55℃

Humidity 0 to 95%RH, no condensation or icing

Weight 116.5g (with baery)

Dimension 97x97x32mm

Manufacturer:

Sentek Electronics Co., Ltd.

#448 Yingchun road, Wangchun Industrial Park, Ningbo City

315175, Zhejiang, China

Tel: 86-574-8715 3117 Fax: 86-574-8715 5951

E-mail: [email protected] Http: //www.sentek.cc

Do not disconnect the battery from the alarm.This will remove

your protection from fires.

NOTE:

Do not use any other kind of battery. This alarm may

not operate properly with other kind of battery.

Normal, the LED flashes every 32 seconds. A beep or chirp occurring

at half time of LED flashes, it indicates the alarm is fault.

Open the cover and vacuum the dust off the alarm’s sensing chamber

at least once a year. This can be done when you open the alarm to

change the battery. Remove battery before cleaning. To clean alarm,

use soft brush attachment to your vacuum. Carefully remove any dust

on alarm components, especially on the openings of the sensing

chamber. Replace battery after cleaning. Test alarm to make sure

battery is correctly. Check to make sure there are no obstruction inside

the sensing chamber. If there is any dust in the sensing chamber insert

a toothpick from the back to the front.

WARNING:

NOTE:

In order to protect your right, please keep the original

NOTE:

Do not test the alarm with smoke in silence mode, otherwise

the alarm will not alarm.

NOTE:

DWG No. K04402105 Rev.1.1

SK40 is designed complying with EN14604. SENTEK warrants its

enclosed Smoke Alarm, but not the battery, to be free from defects in

materials and workmanship under normal use and service for a period

of five Years from date of purchase. SENTEK makes no other express

To stop the nuisance alarm, silence function is available to use. Pressing

the test button and after releasing it, the alarm will be hused about 9

minutes and the LED indicator flashes once each 8 seconds (in normal

working status, the LED flashes once each 32 seconds). During this time,

the alarm becomes insensiive to the smoke. Wait for the alarm to exit

the silence status and the alarm will continue to detect the smoke again.

smoke or combustion particles in the air. Be sure that the alarm buzzer

is a warning of a possible serious situation, which requires your

immediate attention.

attached at the back of the alarm . It is keyed so it can only be installedone

way. Tug the connector to be sure that it is plugged in correctly. The

connector can be removed at any time by holding the connector body

firmly and pulling it out.

7. Line up the slot of the bracket and the alarm. Push the alarm onto

the mounting bracket and turn it clockwise to fix it into place. Pull

outward on the alarm to make sure it is securely attached to the

mounting bracket.

6. Using the two screws and plastic wall plugs (all supplied), attach the

bracket to the wall. Plug the power connector into other connector

For replacement battery, use Gold Peak 1604P 1604S,1604A;

Eveready 522,216,1222; Duracell MN1604; Golden Power G6F22,

GL6F22A; Pairdeer 6F22,6LR61,CR-V9; Huiderui CP9V; EVE CR9V/P.

NOTE:

徐珊珊

宋文轩

李志强

刘琼洁

SK40

4401297

K04402105

备注：A3,80g黑白双面印刷(对折12等份)

2019/02/14

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修订记录 (REVISION HISTORY)

新发行(New issue)

徐珊珊 2020/11/23

2020/11/23

刘胜 2020/11/23

2020/11/23

田强 2020/11/23

1.1 灵敏度更改为0.08~0.13dB/m

宁波尚泰电子有限公司

NINGBO SENTEK ELECTRONICS CO.,LTD.

说明书 (Installation Instructions)

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