Hitachi RAW-25NH2A Bedienungsanleitung

– 1 –

ENGLISH

OUTDOOR UNIT

OPERATION MANUAL

TANK UNIT OUTDOOR UNIT

TAW-270NH2A / RAW-25NH2A

TAW-270NH2A

MODEL

TANK UNIT

Instruction manual Page 1~26

To obtain the best performance, please read this instruction manual completely.

SANITARY HOT WATER HEAT PUMP

RAW-25NH2A

FRANÇAIS

DEUTSCH

SVENSKA

TAW-270NH2A (EN1) 1 8/10/11 12:30 PM

– 2 –

Thank you for choosing a sanitary hot water heat pump from Hitachi.

To obtain the optimum performance and

ensure years of trouble-free operation, please read through this instruction manual. After reading, be sure to keep

this manual conveniently available for future reference.

There are two systems for supplying power to the heat pump; a full-time power supply system and an

off-peak power supply system. Available functionality depends on your power contract. Further details are

provided below.

A: Full-time power supply

B: Off-peak power supply

Contents

Safety precautions O SAFETY PRECAUTIONS ...........................................................3-5

Preparation O Name of each part..........................................................................6

O Name and function of control panel ...............................................7

O Preparing for Operation .................................................................8

O Setting the current time (only when connected to a .......................9

full-time power supply)

O Setting hot water temperature ......................................................10

Operation O Standard Operation .....................................................................11

Instruction of each function

O Timer Function

– Sets the same mode every day .......................................12, 13

– Sets a different mode for each day .................................14, 15

O ECO Mode Function ....................................................................16

O Anti-bacteria Function .................................................................17

O Boost Function ............................................................................18

O Emergency Function ...................................................................19

Maintenance O Precautions during maintenance ................................................20

O Regular inspection and maintenance ..........................................20

O Monthly inspection and maintenance ..........................................20

O

Yearly inspection and maintenance ............................................21

O Power failure ...............................................................................22

O Suspension of the water supply ..................................................22

O When the unit will not be used for an extended period ...............22

O Installation .............................................................................23, 24

Troubleshooting O Sounds ........................................................................................25

O Operation .....................................................................................25

After-sales service O Call your sales agent immediately if any of the ...........................26

following symptoms occur

O Speciﬁ cations ..............................................................................26

Safety precautions

TAW-270NH2A (EN1) 2 8/10/11 12:30 PM

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ENGLISH

SAFETY PRECAUTION

PRECAUTIONS DURING INSTALLATION

CAUTION

To learn how to used the sanitary hot water heat pump correctly and prevent personal injury and damage to

property, the user must read through the “Safety Precautions” before operating the sanitary hot water heat pump.

Pay special attention to instructions preceded by the WARNING and CAUTION symbols.

Q Precautions in this manual

This manual uses the following signal words and symbols, which are categorized according to the degree of injury

or damage that could occur from incorrect use when signal words or instructions are ignored.

WARNING

CAUTION

This symbol indicates a potentially

hazardous situation, which if not avoided,

could result in death or serious injury.

This symbol indicates a potentially

hazardous situation, which if not avoided,

may result in minor injury (or property

damage).

Type and Degree of Injury and Damage

Pictorial Examples

Make sure to connect earth line

Indicates a prohibited action

Indicates a mandatory action

Q After reading the precautions, store the operation manual in a location where it can be easily accessed by anyone

using the unit.

WARNING

O Installation of the unit must be performed by the sales agent or other

authorized personnel

Installation by the user could lead to water leakage, electric shock hazards

or ﬁ re.

O Connect the unit to ground

O Have your sales agent or other authorized personnel connect the unit

to ground

Ground connections must not be made to gas pipes, water pipes, lightning

rods or telephone ground connections.

An improperly made ground connection may cause damage or short-circuits

that could result in electrical shock and ﬁ re.

O Do not modify the unit

Modiﬁ cations could lead to water leakage, breakdowns, electrical shocks and

ﬁ re.

O Install an earth leakage circuit breaker

Failure to install an earth leakage circuit breaker may lead to an electric

shock hazard.

O Install a pressure-relief valve

Failure to install a pressure-relief valve may lead to tank damage.

O Provide proper drainage of water resulting from dehumidiﬁ cation

Drainage problems could cause water to drip from the outside unit and onto

furniture.

O Supply the unit with tap water (French hardness (Th) 15 to 20°F, PH7)

Do not use well water, water from a hot spring or ion exchanged water.

If the hardness of the water exceeds (TH) 25°F, install a demineralizer to

lower hardness to 15 – 20°F.

O Do not connect the unit to other than speciﬁ ed power source

Connecting the unit to an unspeciﬁ ed power source may cause overheating

and ﬁ re.

TAW-270NH2A (EN1) 3 8/10/11 12:30 PM

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PRECAUTIONS DURING INSTALLATION

Handling and Maintenance

CAUTION

WARNING

O Check that the tank is securely installed

Otherwise, it could tip over in an earthquake causing personal injury.

Contact your sales agent if it is not securely installed.

O Check that the ﬂ oor where the unit is installed is waterproof and has

proper drainage

Otherwise ﬂ oors below may suffer damage from possible leakage.

Consult your sales agent for details.

O Do not set it up in the place where water in piping and the tank freezes

Poor insulation could cause pipe damage from freezing up which could result

in burn injuries and water leakage.

O Do not install the unit in a location where there is a risk of ﬂ ammable

gas leaks

Flammable gas coming into contact with the unit could ignite and result in

a ﬁ re.

O If you notice anything abnormal (burning smell, etc.), immediately stop

operation, turn the breaker off and contact your sales agent.

Continued operation under these conditions may result in damage, electric

shock or ﬁ re.

O When a thunderstorm approaches, immediately stop operation and turn

the breaker off

A severe thunderstorm could lead to equipment damage.

O If the water will not boil or takes unexpectedly long to boil, a refrigerant

leak may have occurred and contact your sales agent.

The refrigerant used in this water heater is harmless. However, in the unlikely

event of a leak, refrigerant that comes into contact with the ﬂ ame in a fan

heater, stove, gas cooker, etc. will generate a toxic substance. If you notice

an irritating odor, immediately turn the water heater off and open the windows

for ventilation, before contacting your sales agent.

O Use hot water from the heater mixed with cold water

The water from pump is otherwise so hot that it could cause burn injuries.

Please install thermostat type mixer tap.

O Do not block the inlet or outlet vents in the outdoor unit, or insert your

ﬁ ngers or objects into the vents

You could injure yourself by coming into contact with the high-speed internal

fan or you could damage the unit. The performance of the unit may also drop.

O Do not use wire or conductors in place of the fuse in the circuit breaker

This could lead to damage or ﬁ re.

O Do not disassemble the unit

Disassembly exposes you to the risk of electrical shock.

TAW-270NH2A (EN1) 4 8/10/11 12:30 PM

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ENGLISH

Handling and Maintenance

CAUTION

O Be sure to stop the unit and turn the breaker off before cleaning it

During operation, the internal fan rotates at high speed and coming into

contact with it will result in injury or damage.

O Fill up the tank before starting operation

Failure to ﬁ ll up the tank will cause overheating and could result in damage.

O Drain the tank of water when it will not be used for an extended period

of time

The quality of water may change if it is left standing in the tank for a month

or longer.

O Check that the pressure-relief valve works

Using a faulty pressure-relief valve could damage the tank or result in water

leakage. If the valve is damaged, consult your sales agent.

O Do not use an outdoor mounting frame damaged from long use

The outdoor unit could tip over causing injury.

O Do not drink water from the tank unit directly

O Do not drain hot water unmixed

Hot water can cause injury and damage the drain pipes.

Mix it with cold water before draining.

O Do not touch the switch with wet hands

This may result in electric shock.

O Do not wash the unit with water and do not place vases ﬁ lled with water

on top of it

This may result in electric shock or ﬁ re from leaking electricity.

O Do not touch the water or pipe when draining the tank

You could suffer burn injuries.

O Do not touch the mixer tap when ﬁ lling the tank with hot water

You could suffer burn injuries from the hot water.

O Do not touch the pressure-relief valve or the drain pipe when inspecting

the valve

You could suffer burn injuries from the hot water.

TAW-270NH2A (EN1) 5 8/10/11 12:30 PM

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TANK UNIT

OUTDOOR UNIT

PREPARATION

Hot water outlet (G 3/4"B)

Control panel

Leak water receiver

Cold water inlet (G 3/4")

Mg-Anode

When heating operation, drain or

defrosted water flows out from

outdoor unit.

Don’t close drain outlet portion in

chilly area so as not to freeze these.

CAUTION

Refrigerating pipe

Air inlet (back and left side)

Air outlet

Condensed water outlet

NAME OF EACH PART

Note:

– Mg-Anode should be changed yearly, it may loose its function

for corrosive protection if exceeds the time frame.

– It is recommended to replace the Mg-Anode every 1 year

depends on the quality of water.

– Type number for Mg-Anode is <SPX-WTA1>. Use this number

for ordering when wants to replace.

TAW-270NH2A (EN1) 6 8/10/11 12:30 PM

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ENGLISH

NAME AND FUNCTION OF CONTROL PANEL

7-segment LED indicator:

Indicates water temperature, time and

other information

(Refer to page 9-19)

Timer LED indicator:

Lights while timer is set

(Refer to page 12-15)

ECO button:

Sets/releases ECO mode

(Refer to page 16)

ECO LED indicator:

Lights in ECO mode

(Refer to page 16)

Heating operation LED indicator:

O Lights during heating operation.

O



Blinks during boost operation.

(Refer to page 11, 18)

START/STOP button:

Turns the unit on and off

(Refer to page 11)

Operation LED indicator:

O Lights during operation

(Refer to page 11)

O



Blinks during defrosting

(Refer to page 11)

Function button:

To change function mode when setting

(Refer to page 9-10, 12-17, 19)

Boost button:

Use to quickly reach boiling

temperature by operating the heater

pump at full power

(Refer to page 18)

Set button:

Conﬁ rms changes made to water

temperature, time and other settings

(Refer to page 9-10, 12-17)

Up button/Down button:

Changes water temperature, time

and other settings

(Refer to page 9-10, 12-17, 19)

Anti-bacteria LED indicator:

O Lights during Anti-bacteria setting

O Blinks during Anti-bacteria operation

(Refer to page 17)

Each push of the function button changes the

indications as shown below.

Current water temperature

Time

Day of the week

Hot water temperature setting

Timer setting

Anti-bacteria function setting

Each push of the button changes

the indications as shown below

.

Timer 1 setting: day/operation mode

Timer 1 setting: start time

Timer 2 setting: day/operation mode

Timer 2 setting: start time

TAW-270NH2A (EN1) 7 8/10/11 12:30 PM

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1

2

3

4

5

PREPARING FOR OPERATION

O USE THE FOLLOWING STEPS TO START UP THE UNIT THE FIRST TIME OR WHEN IT HAS NOT BEEN

USED FOR EXTENDED PERIOD OF TIME.

FILLING UP THE TANK

Turn on the water tap and close the drain valve.

Turn on all connected mixer tap (hot water side).

It takes about 20 to 30 minutes to ﬁ ll up the tank. Please keep all taps open for a while in order to clean

the tank and the drain pipes by running water.

Close all connected mixer taps (hot water side) and open all taps (cold water side).

Let the cold water run for awhile to clean out the tank.

Turn off all connected mixer taps.

Inspection

1

After ﬁ lling the tank, check all pipe joints and the tank for leakage.

2

Check operation of the pressure-relief valve.

3

After heating water for the ﬁ rst time, again check pipe joints and the tank for water leaks.

1

TURNING ON THE POWER

Turn on circuit breaker.

When the circuit breakers have been turn on, “-- : --”. will start to blink on the control panel of the tank unit.

CAUTION

Fill up the tank completely before turning the

power on.

Turning the power when the tank is empty will

overheat it and damage the unit.

In case that the electric power is supplied to both of tank unit and outdoor unit, please always turn on the

outdoor unit side ﬁ rst.

If the tank side is turned on ﬁ rst, it may fall into error mode of “E0 03” and the unit is unable to operate.

TAW-270NH2A (EN1) 8 8/10/11 12:30 PM

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ENGLISH

SETTING THE CURRENT TIME

(ONLY WHEN CONNECTED TO A FULL-TIME POWER SUPPLY)

1

Press the button to display the time.

The time will start to blink slowly.

2

Press the button.

The time will start to blink rapidly.

3

4

Press the buttons to set the time.

Hold down either button to quickly increase or decrease the number

settings.

Press the button.

The time has now been set.

5

Press the button to set the day of the week

6

Press the button.

The number indicating the day of the week starts to blink.

7

Press the buttons to set the day of the week.

d1: MON; d2: TUE; d3: WED; d4: THU; d5: FRI; d6: SAT; d7: SUN

8

Press the button.

The day of the week has now been set.

After about 10 seconds, the indicator will alternately display current water

temperature and the time.

Note:

Timer operation is possible only when you set the current time and day of the week.

An extended power outage (30 minutes or longer) will cancel the time setting. If this happens, reset it.

TAW-270NH2A (EN1) 9 8/10/11 12:30 PM

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SETTING HOT WATER TEMPERATURE

O



Hot water temperature can be set between 40 to 65°C. Set the temperature depending on hot water

volume that you require. The recommended temperature range is 40 to 55°C. (The factory default setting

is 55°C.) A low water temperature setting will mean more efﬁ cient operation. A higher temperature setting

will make more scale.

Estimated hot water volume when converted to 40°C

Hot water temperature 40°C 45°C 50°C 55°C 60°C 65°C

Hot water volume when converted to 40°C 240L 295L 345L 395L 430L 465L

O



The operation mode will automatically change depending on the hot water setting temperature.

Hot water temperature ~ 55°C 55 ~ 65°C

Heat pump operation ON ( 1) OFF

Electric heater operation OFF/ON ( 2) ON

( 1): Heat pump may not operate depending on the condition of outdoor temperature and tank water

temperature.

Air temperature is below -15°C or above 37°C, the heat pump does not operate for the compressor

protection.

( 2): Electric heater will operate in case that heating capacity of heat pump operation is not enough to

heat up the water to setting temperature.

1

Press the button to display hot water temperature setting.

2

Press the button.

The hot water temperature setting starts to blink.

3

4

Press the buttons to adjust hot water temperature

setting.

Hold down the buttons to rapidly increase or decrease the

number values.

Press the button.

This sets the hot water temperature.

After about 10 seconds, the indicator will alternately display

current water temperature and the time.

TAW-270NH2A (EN1) 10 8/10/11 12:30 PM

– 11 –

ENGLISH

OPERATION

STANDARD OPERATION

1

Press the button.

The indicator will light and operation starts.

OPERATING PROCEDURES

O



Time required to reach the set water temperature depends on water temperature, outside temperature

and other factors.

O

 

When the water temperature and outside temperature are low and heating the water takes time, the

electric, heater is automatically set to auxiliary operation to heat the water within eight hours.

(*1) Depending on the operating conditions, it may take longer than eight hours.

(Water temperature; <5°C, setting temperature; >55°C)

(*2) The ECO mode will not reduce the time it takes to heat the water.

(1) When the water temperature is lower than hot water temperature setting,

heating operation will start.

The indicator lights during heating operation.

The indicator blinks during defrosting.

Defrosting will be performed about once an hour when frost forms on the

heat exchanger of the outdoor unit, for 5-10 minutes each time.

(2) The heating operation stops when the water temperature reaches the hot

water temperature setting.

The indicator goes off.

Press button when the indicator is lit.

Heating stops and the indicator goes off.

STOPPING

TAW-270NH2A (EN1) 11 8/10/11 12:30 PM

– 12 –

INSTRUCTION OF EACH FUNCTION

TIMER FUNCTION

(SETS THE SAME MODE EVERY DAY)

1

Press the button to display “d.* **”

The setting for today is displayed.

d1: MON; d2: TUE; d3: WED; d4: THU; d5: FRI; d6: SAT; d7: SUN

2

Press the button.

“d. * ” starts to blink.

3

Press the buttons to enter “d.1.”

A setting made for “d.1” will also be used on “d2 to d.7.”

O



This function is available only when the unit is connected to a full-time power supply.

O

 Two timer settings can be made per day.

O

 A setting made for Monday (d.1) will also be used on Tuesday (d.2) through Sunday (d.7) in the same

way as on Monday.

O

 The unit records the set time.

O

 Anti-bacteria mode starts at 22:00 on Sunday every week regardless of timer setting.

Operation example

Monday (d.1)

Tuesday (d.2)

Saturday (d.6)

Sunday (d.7)

TAW-270NH2A (EN1) 12 8/10/11 12:30 PM

– 13 –

ENGLISH

4

Press the button.

“d.1” is now set and “ – – ” blinks.

5

6

Press the buttons to set the operation mode.

ON : Standard operation

EC : ECO mode operation

OF : OFF

– – : No timer operation (operation mode continues)

Press the button.

The day of the week is set and the time starts to blink.

7

Press the buttons to change the time.

(The time can be set in 10-minute increments.)

8

Press the button.

The 1st setting has now been made and the 2nd operation mode is

displayed.

Setting the operation mode and time for the 1st setting

9

Press the buttons to set the operation mode.

ON : Standard operation

EC : ECO mode operation

OF : OFF

– – : No timer operation

10

Press the button.

The operation mode is now set and the time starts to blink.

11

Press the buttons to change the time.

(The time can be set in 10-minute increments.)

12

Press the button.

The 2nd setting is now made and the indicator lights.

After about 10 seconds, the indicator will alternately display current

water temperature and the time.

Setting the operation mode and time for the 2nd setting

Note: When the time for the 2nd setting is set ahead of the 1st setting, the 1st

setting will be given priority and the 2nd setting will be cancelled.

TAW-270NH2A (EN1) 13 8/10/11 12:30 PM

– 14 –

TIMER FUNCTION

(SETS A DIFFERENT MODE FOR EACH DAY)

1

Press the button to display “d. * **”

Today’s setting is displayed.

d1: MON; d2: TUE; d3: WED; d4: THU; d5: FRI;

d6: SAT; d7: SUN

2

Press the button.

“d. * ” starts to blink.

3

Press the buttons to display the day where

you want to change a setting

O This function is available only when the unit is connected to a full-time power supply.

O Two timer settings can be made per day.

O A setting make for Monday (d.1) will also be used on Tuesday (d.2) through Sunday (d.7) in the same way

as on Monday.

When ﬁ rst setting up the function, make a setting for Monday (d.1) then reset the days where you want

change the settings. (Refer to page 12)

O When a setting is make for Saturday (d.6), the same setting is also set for Sunday (d.7).

O The unit records the set time.

O Anti-bacteria mode starts at 22:00 on Sunday every week regardless of timer setting.

Operation example

Monday (d.1)

Tuesday (d.2)

Wednesday (d.3)

Thursday (d.4)

Friday (d.5)

Saturday (d.6)

Sunday (d.7)

TAW-270NH2A (EN1) 14 8/10/11 12:30 PM

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;>F4AC4<?4A0CDA45>A7>CF0C4AC4<?4A0CDA4B4CC8=6C70=8B>C74AF8B4?>BB81;4C8B02>=E4=84=C540CDA45>AA43D28=6

?>F4A2>=BD<?C8>=F74=;4BBF0C4A 8B 0E08;01;4

 #>C4 ,0C4A C4<?4A0CDA4 >DCB834 C4<?4A0CDA4 0=3 >C74A 502C>AB <0H 8=2A40B4 C74 740C8=6 C8<4 0=3 <0:4 8C

8<?>BB81;4C>A4027C747>C F0C4A C4<?4A0CDA4 B4CC8=6

   =C8102C4A80<>34DB4BC74 4;42CA82740C4A5H>D3> =>CF0=C C>DB4C744;42CA82740C4ACDA=0=C8102C4A80

<>34>55

   ;42CA82 740C4A>?4A0C4B8=C7420B4 >5 2><?A4BB>A ?A>C42C8>=





.>D 20= B4C 0 F0C4A C4<?4A0CDA4 14CF44=  C> K C 8B A42><<4=343 C70C H>D B4C 0 F0C4A C4<?4A0CDA4 C70C 8B

01>DC K ;>F4A C70= DBD0; )74 502C>AH 3450D;C B4CC8=6 8B K ;>F4A C4<?4A0CDA4 B4CC8=6 F8;; 8=2A40B4 >?4A0C8=6

45284=2H



 .36 3$1 5.+4,$ 6'$- ".-5$13$# 3. 9

>CF0C4A C4<?4A0CDA4 K K K K K K

  >CF0C4AE>;D<4 F74= 2>=E4AC43 C>K ! ! ! ! ! !





)78B5D=2C8>=8B0E08;01;40;B> 3DA8=6 C8<4A >?4A0C8>= '454A C>?064





%A4BBC741DCC>=3DA8=6>?4A0C8>=

)748=3820C>A;867CB4=6068=6C74$<>34

)74$<>3420=14B4C0=320=24;;43>=;H3DA8=6>?4A0C8>=

$=;HF74=8=3820C8>=5>A?>F4A8B;8C



%A4BBC741DCC>=C>38B?;0HC747>CF0C4AC4<?4A0CDA4B4CC8=6



%A4BBC741DCC>=

)747>CF0C4AC4<?4A0CDA4B4CC8=6BC0ACBC>1;8=:





%A4BBC741DCC>=BC>039DBC7>CF0C4AC4<?4A0CDA4B4CC8=6

>;33>F=48C74A1DCC>=C>@D82:;H8=2A40B4>A342A40B4C746DA4B4CC8=6B

%A4BBC741DCC>=

)747>CF0C4AC4<?4A0CDA470B=>F144=B4C

%A4BBC741DCC>=F74=C748=3820C>A8B;8C

)748=3820C>A6>4B>550=3$<>348B20=24;;43

B4CC4<?4A0CDA48BBC>A43B>8C>=;H70BC>14B4C>=24





),## %"

:  :





%A4BBC741DCC>=C>38B?;0HN!O



%A4BBC741DCC>=

N$#O>AN$OBC0ACBC>1;8=:





%A4BBC741DCC>=BC>B4;42CN$#O>AN$O

%A4BBC741DCC>=

)748=3820C>A;867CBC>8=3820C4C70C0=C8102C4A80<>3470B

144=B4C$#>A$

5C4A 01>DC  B42>=3B C74 8=3820C>A F8;; 0;C4A=0C4;H 38B?;0H

2DAA4=CF0C4AC4<?4A0CDA40=3C74C8<4

)748=3820C>A1;8=:B3DA8=60=C8102C4A80<>34

ANTI-BACTERIA FUNCTION





,74=0=C8102C4A80 <>34 8BB4C C74 D=8C F8;;A08B4 C74 C4<?4A0CDA4>5 C74 C0=: C>K >=24 0F44: C>

BC4A8;8I4C74 F0C4A

  = 0 5D;;C8<4 ?>F4ABD??;H BHBC4< 0=C8102C4A80<>34 BC0ACB 0C >= (D=30H 4E4AHF44:

  = 0= >55?40: ?>F4A BD??;H BHBC4< 0=C8102C4A80 <>34 8B ?4A5>A<43 8= >=4 >DC >5 4E4AH B4E4=

>?4A0C8=6B4BB8>=B C 8B =>C ?>BB81;4 C> B4C0 30H 5>A 0=C8102C4A80 <>34





=C8102C4A80<>34 DB4B C74 4;42CA82 740C4A

),## %"

:  :

BOOST FUNCTION





)74 1>>BC 5D=2C8>= >?4A0C4B C74 4;42CA82 740C4A 0=3 DB4B C74 5D;; ?>F4A >5 C74 740C4A ?D<? C> A43D24

740C8=6C8<4

 #>C4)74 1>>BC 5D=2C8>=8B =>C 0E08;01;4 3DA8=60=C8102C4A80 <>34





%A4BBC741DCC>=F74=C748=3820C>A8B>=

)748=3820C>A1;8=:BC>8=3820C4C741>>BC5D=2C8>=70B144=4=60643

,78;4>?4A0C8>=8B>55C748=3820C>A8B>551>>BC<>3420==>CBC0AC

 %A4BBC741DCC>=F74=C748=3820C>A8B1;8=:8=6

 )748=3820C>A270=64BC>BC403H;867C0B=>A<0;740C8=6>?4A0C8>=BC0ACB

),## %"

:  :





EMERGENCY FUNCTION

 '$- 3'$ .43#..1 4-(3 ' 2 % (+$#  -# $11.1 ".#$   !+(-*2 -# '$ 3$1 /4,/ ./$1 3(.- (2 -.3 5 (+ !+$

$,$1&$-"8 ./$1 3(.- 42(-& 3'$ $+$"31(" '$ 3$1 (2 /.22(!+$ %.1  +(,(3$# 3(,$ /$1(.#

 .6$5$1 $,$1&$-"8 ./$1 3(.- (2 -.3 5 (+ !+$ 6'$-  3 -* 4-(3 % (+41$  -# $11.1 ".#$   !+(-*2 ' 2

.""411$#

 '$ 6 3$1 3$,/$1 341$ (2 2$3 3. 9

 $ <>34 >>BC >A=C8102C4A80 <>3420==>C 14 ?4A5>A<43

#>C44 BDA4 C> 2>=C02C H>DA B0;4B 064=CC> 70E4 C74 D=8C A4?08A43 145>A4 BC0AC8=64<4A64=2H >?4A0C8>=



>;33>F=C740=31DCC>=B5>AB42>=3B

(4CC8=6C74"'#.<>34C742DAA4=CF0C4AC4<?4A0CDA40=3

4AA>A2>340A438B?;0H430;C4A=0C4;H

B4C"'#.<>348BBC>A43B>8C>=;H70BC>14B4C>=24





*B44<4A64=2H>?4A0C8>=F74=C74>DC3>>AD=8C70B508;430=3C748=3820C>A1;8=:B

 DA8=64<4A64=2H>?4A0C8>=7>;33>F=C740=31DCC>=B5>A

B42>=3B



%A4BBC741DCC>=

)748=3820C>AF8;;;867C0=3>?4A0C8>=BC0ACB

 ,74=C74F0C4AC4<?4A0CDA48B;>F4AC70=7>CF0C4AC4<?4A0CDA4B4CC8=6

740C8=6>?4A0C8>=F8;;BC0AC

 )748=3820C>A;867CB3DA8=6740C8=6>?4A0C8>=

 )74740C8=6>?4A0C8>=BC>?BF74=C74F0C4AC4<?4A0CDA4A40274BC747>C

F0C4AC4<?4A0CDA4B4CC8=6

 )748=3820C>A6>4B>55

%A4BB1DCC>=F74=C748=3820C>A8B;8C

40C8=6BC>?B0=3C748=3820C>A6>4B>55

),## %"

:  :



PRECAUTIONS DURING MAINTENANCE





3././$1 3(.- -#341-3'$!1$ *$1.%%!$%.1$23 13(-&, (-3$- -"$ (+41$3.'$$#3'(2(-2314"3(.-, 8

1$24+3(-$+$"31(" +2'."*

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