Samlexpower ST 2000-224 Owner's Manual

ST Series

Pure Sine Wave

Power Inverter

User’s Manual

Contents

1. Important Safety Instructions…………………………………………………………………….

2

1-1 General safety precautions…………………………………………………………………… 2

1-2 Precautions when working with Batteries…………………………………………………… 2

2. Functional Characteristics.……………………………………………………………………….

3

2-2 Application……………………………………………………………………………………. 4

2-3 Features………………………………………………………………………………………. 5

3. Introduction.………………………………………………………………………………………… 12

3-1 Front Panel Operation………………………………………………………………………. 12

3-5 Rear panel Operation……………………………………………………………………….. 23

3-6 Installation……………………………………………………………………………………. 23

4 Information…………………………………………………………………………………………..

25

4-2 Maintenance………………………………………………………..………………………….. 25

5. Appendices…………………………………………………………………………………………..

27

5-1 FCC (Class A) Declaration of Conformity………………………………………………… 27

5-3 EMC (Class A) Declaration of Conformity………………………………………............. 36

5-4 CE (LVD EN60950) Declaration of Conformity…………………………………………... 38

© Copyright: This manual is the copyright of COTEK Electronic Ind. Co., Ltd. And may not be reproduced or copied without the express permission of the owner.

1

1. Important Safety Instructions

WARNING!

Before using the Inverter, read and save the safety

instructions.

1-1. General Safety Precautions

1-1-1. Do not expose the Inverter to rain, snow, spray, bilge or dust.

To reduce risk of hazard, do not cover or obstruct the ventilation openings. Do not install the Inverter in a zero-clearance compartment. Overheating may result.

1-1-2. To avoid a risk of fire and electronic shock. Make sure that existing wiring is in good electrical condition; and that wire size is not undersized.

Do not operate the Inverter with damaged or substandard wiring.

1-1-3. This equipment contains components which can produce arcs or sparks. To prevent fire or explosion do not install in compartments containing batteries or flammable materials or in locations which require ignition protected equipment. This includes any space containing gasoline-powered machinery, fuel tanks, or joints, fittings, or other connection between components of the fuel system.

1-2. Precautions When Working with Batteries

1-2-1. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters eye, immediately flood eye with running cold water for at least 20 minutes and get medical attention immediately.

1-2-2. Never smoke or allow a spark or flame in vicinity of battery or engine.

1-2-3. Do not drop a metal tool on the battery. The resulting spark or short-circuit on the battery of other electrical part may cause an explosion.

1-2-4. Remove personal metal items such as rings, bracelets, necklaces, and watches when working with a lead-acid battery.

A lead-acid battery produces a short-circuit current high enough to weld a ring or the like to metal, causing a severe burn.

2

2-1. General Information

ST-series completes with stand –alone power inverter with AC transfer switch and is suitable for RV, Marin and Emergency appliances.

Either mode is front panel programmable.

In the first option, Off-line mode , AC output power will be supplied through the AC bypass mode in its normal operation. Upon AC input failure, output power will be diverted through the DC to AC Inverter Mode. Once AC mains are restored, the unit will revert from the Inverter Mode to the

Bypass Mode.

In the second option, On-line mode , AC output power will be provided directly by the inverter from the DC source. Should the DC source or inverter fail, the system will transfer its output power through the bypass mode. Once the DC power source is restored, the system will revert to the inverter mode.

This power inverter series is a member of the most advanced line of mobile AC power systems available.

To get the most out of the power inverter, it must be installed and used properly. Please read the instructions in this manual before installation and operation this model.

WARNING!

The above two option are fixed during the production and customer unable to modify.

2-2. Application

3

2-2-1 Power tools–circular saws, drills, grinders, sanders, buffers, weed and hedge trimmers, air compressors.

2-2-2. Office equipment – computers, printers, monitors, facsimile machines, scanners.

2-2-3. Household items – vacuum cleaners, fans, fluorescent and incandescent lights, shavers, sewing machines.

2-2-4. Kitchen appliances – coffee makers, blenders, ice markers, toasters.

2-2-5 Industrial equipment – metal halide lamp, high – pressure sodium lamp.

2-2-6. Home entertainment electronics – television, VCRs, video games, stereos, musical instruments, satellite equipment.

4

2-3. Features

■ Pure sine wave output (THD < 3%) to operate higher-end electronic

Equipments.

■ Output frequency ： 50 / 60Hz switch selectable

■ Built in 16A/25A or 30A rating transfer switch.

■ Speed up transfer time and synchronized operation with the AC source at all times that allows the transfer to be interruption-free for sensitive equipments.

■ Built in advance microprocessor to make friendly interface with user.

■ Low power “ Power Saving Mode “ to conserve energy

■ Capable of driving highly reactive & capacitive loads at start moment.

■ Hardwire AC connection model option.

■ Loading controlled cooling fan.

■ Smart remote controller.

■ 3 LED indicators with tri-color display all operation status.

■ High efficiency 88 ~ 94%.

■ Protection:

Input over voltage and Input low voltage protection.

Low battery alarm

Over temperature protection.

Over load protection

Short Circuit protection

Reverse polarity protection.

AC circuit breaker (6Amp to 30Amp)

2-4. Electrical Performance

5

Specification Model No.

Item

Continuous Output Power

Maximum Output Power (3Min.)

Surge Rating

ST1000-112 ST1000-124 ST1000-148 ST1000-212 ST1000-224 ST1000-248

1000W

1150W

2000W

Output Voltage

12V 24V 48V 12V 24V 48V

100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%

Frequency

(Switch Selectable)

50 / 60Hz

Output Waveform Pure Sine Wave (THD < 3%)

Efficiency 88% 90% 92% 90% 93% 94%

No Load Current Draw

Stand-By Current Draw

Input Voltage Regulation

1.43A

0.25A

10.5-15

VDC

0.75A 0.38A 1.25A 0.65A 0.35A

0.15A 0.09A 0.25A 0.15A 0.09A

21.0-30 42.0-60 10.5-15 21.0-30 42.0-60

VDC VDC VDC VDC VDC

Input Level Indicator

Load Level Indicator

Failure Indicator

Red / Orange / Green LED

Protection

Circuit Breaker

Red LED

Overload, Short Circuit, Reverse Polarity (Fuse), Over Temperature

Over/Under Input Voltage, AC Input Circuit Breaker

30 Amp 6 Amp

Remote Control Unit

Synchronous AC transfer

Transfer switch

Transfer Time

Safety

EMI Conduction&Radiation

EMS Immunity

EMC

CR6 / CR8 Optional

YES

30 Amp 16 Amp

Inverter to utility AC : 8 ~ 10msec. ; Utility AC to inverter : 16 ~ 50 msec

Meet UL458

Compliance to FCC Class A

------

------

Compliance to EN55022 classA

Compliance to EN61000-3-2,3 e-MARK

Operating Temperature Range

Storage Temperature Range

Cooling

------ Compliance to e-13*72/245/ECC,95/54 EC

0 – 40 ɗ

-30 ɗ to 70 ɗ

Loading controlled cooling fan

Weight 6.2 kg / 13.6 Lbs.

Note: The specifications are subject to change without notice.



6

Item



Surge Rating

ST1500-112 ST1500-124 ST1500-148 ST1500-212 ST1500-224 ST1500-248

1500W

1725W

3000W

Output Voltage

12V 24V 48V 12V 24V 48V

100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%

Frequency


50 / 60Hz

Output Waveform



Pure Sine Wave (THD < 3%)

Efficiency 88% 91% 92% 92% 93% 94%

1.45A 0.75A 0.40A 1.40A 0.70A 0.40A


0.28A

10.5-15

VDC

0.15A 0.09A 0.28A 0.15A 0.09A

21.0-30

VDC

42.0-60

VDC

10.5-15

VDC

21.0-30

VDC

42.0-60

VDC





Protection

Circuit Breaker


EMC


Transfer switch

Transfer Time

Safety


EMS Immunity

Red LED



30 Amp 10 Amp


YES

30 Amp 10Amp


Meet UL458


------

------


Compliance to EN61000-3-2,3 e-MARK



Cooling

------ Compliance to e-13*72/245/ECC,95/54 EC

0 - 40 ɗ

-30 ɗ to 70 ɗ


Weight 7.0 kg / 15.4 Lbs.




7

Item



Surge Rating

ST2000-112 ST2000-124 ST2000-148 ST2000-212 ST2000-224 ST2000-248

2000W

2300W

4000W

Output Voltage

12V 24V 48V 12V 24V 48V

100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%

Frequency


50 / 60Hz

Output Waveform




Efficiency 88% 91% 92% 90% 93% 94%

2.6A 1.50A 0.70A 2.3A 1.1A 0.65A


0.60A

10.5-15

VDC

0.30A 0.2A 0.60A 0.3A 0.15A

21.0-30

VDC

42.0-60

VDC

10.5-15

VDC

21.0-30

VDC

42.0-60

VDC





Protection

Circuit Breaker



Transfer switch

Red LED



30Amp


YES

30Amp 25 Amp

Transfer Time

Safety


EMS Immunity


Meet UL458


------

------


Compliance to EN61000-3-2,3

EMC e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC

Operating Temperature Range 0 - 40 ɗ

-30 ɗ to 70 ɗ Storage Temperature Range

Cooling

Dimensions

Weight


433(L)*332(W)*115(H) mm / 17(L)*13(W)*4.53(H) Inch

11.2 kg / 24.6 Lbs.




8

Item



Surge Rating

ST2500-112 ST2500-124 ST2500-148 ST2500-212 ST2500-224 ST2500-248

2500W

2875W

5000W

Output Voltage

12V 24V 48V 12V 24V 48V

100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%

Frequency


50 / 60Hz

Output Waveform




Efficiency 88% 91% 92% 90% 93% 94%

2.62A 1.53A 0.72A 2.32A 1.15A 0.68A


0.60A

10.5-15

VDC

0.30A 0.2A 0.60A 0.3A 0.15A

21.0-30

VDC

42.0-60

VDC

10.5-15

VDC

21.0-30

VDC

42.0-60

VDC





Protection

Red LED



30 Amp


YES

30Amp 25 Amp


Meet UL458


------

------


Compliance to EN61000-3-2,3

EMC

Circuit Breaker



Transfer switch

Transfer Time

Safety


EMS Immunity e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC



0 - 40 ɗ

-30 ɗ to 70 ɗ

Cooling

Dimensions


463(L)*332(W)*115(H) mm / 18.2(L)*13(W)*4.53(H) Inch

Weight 12 kg / 26.4 Lbs.


2-5. Mechanical drawings

9

DC INPUT

NEG(-) POS(+)

AC INPUT

0

1

S S S S

1 2 3 4

BREAKER

REMOTE

PORT

POWER

ON-OFF-REMOTE

REVERSE POLARITY

WILL DAMAGE UNIT

10

2-5. Mechanical drawings

NEG(-)

DC INPUT

POS(+)

NEG(-) POS(+)

WARNING: REVERSE POLARITY WILL DAMAGE UNIT

AC INPUT

0

1

BREAKER

REMOTE

PORT

POWER

ON-OFF-REMOTE

11

3. Introduction

3-1. Front Panel Operation

Front view

DC INPUT

NEG(-) POS(+)

AC INPUT

0

1

BREAKER

REMOTE

PORT

POWER

ON-OFF-REMOTE

REVERSE POLARITY

WILL DAMAGE UNIT

ST-1000/ST-1500

AC INPUT

0

1

DC INPUT

BREAKER

NEG(-) POS(+)

REMOTE

PORT

POWER

ON-OFF-REMOTE

NEG(-) POS(+)

WARNING: REVERSE POLARITY WILL DAMAGE UNIT

ST-2000/ST-2500

3-1-1. Power ON / OFF / REMOTE (Main) switch: a. Before installing the inverter, you need to ensure the main switch is in the OFF position. b. Before using the remote unit, you need to ensure the main switch is in the REMOTE position.

3-1-2. AC input Circuit Breaker:

The AC input circuit breaker protects the model from overload.

When an overload condition exists, the circuit breaker stops to supply output AC grid power. To reset it, push the circuit breaker switch then the model will be back in normal operation. The source fault should be corrected before you reset it.

12

3-1-3 Green terminal

1) Before installing the inverter, you need to ensure the main switch must be ”OFF”.

2) Before using the remote control terminal, you need to ensure the main switch muse be “REMOTE”.

3) Ensure the remote contacts off.

4) Use 20 ~ 24 #AWG wire to connect the remote control terminal.

5) Remote control ON/OFF inverter setup status:

ENB ENB

ON:INV. ON

OFF:INV. OFF

TR

HI:INV. ON (TR ON)

LOW:INV. OFF (TR OFF)

GND GND

ON:INV. ON

OFF:INV. OFF

ENB

BAT+

BAT-

ON:INV. ON

OFF:INV. OFF

ENB

GND

+

-

DC

POWER

NOTE: At the same time, only can use one model to control the inverter.

The maximum level is the same as input DC voltage.

3-1-4. Remote Port:

The ST Series Inverter is compatible with any of these remote

controllers: CR-6 or CR-8.

3-1-5. Input Level ： Display Input Voltages

LED Status

RED Blink (slow)

DC 12V

10.3~10.6

DC 24V

20.5~21.2

DC 48V

40.8~42.4

GREEN 12.1~14.2 24.1~28.6 48.1~56.3

OVER RED BLINK 15.0

q 30.0

q 59.6

q

13

3-1-6. Load Level ： Display AC Loads (Watts)

LED Status DARK GREEN ORANGE RED

BLINKING

RED

80 ~ 330W 330 ~ 750W 750 ~ 960W Over 960W ST1000 0 ~ 80W

ST1500 0 ~ 120W 120 ~ 495W 495 ~ 1125W 1125 ~ 1450W Over 1450W

ST2000 0 ~ 160W 160 ~ 660W 660 ~ 1500W 1500 ~ 1920W Over 1920W

ST2500 0 ~ 200W 200 ~ 825W 825 ~ 1875W 1875 ~ 2390W Over 2390W

3-1-7. Power Status ： Display Power & Fault Status

Orange LED

Solid

Slow Blink

Red LED

Green LED

Solid

LED Signal

LED Signal

Fast Blink

Slow Blink

Intermittent Blink

Solid

LED Signal

3-1-8. AC Frequency ： Selected by “S4” Dip Switch

Status

Power OK

Power Saving

Status

OVP

UVP

OTP

OLP

Status

AC GRID INPUT OK

Frequency S4

50 HZ OFF

60 HZ ON

3-1-9. Power Saving Mode: Power Saving Mode is adjustable and set by the Dip Switches, S1, S2 and S3 on the front panel.

Example: The load should be set above15W. If the load is below15W, the power saving mode will be activated.

14

ST1000

ST1500

ST2000

ST2500

S1 S2 S3

DISABLE DISABLE OFF OFF OFF

55W 125W ON ON OFF

115W 245W OFF ON ON

135W 280W ON ON ON

3-1-10. DC Input Terminals:

Connect DC input terminals to 12V / 24V / 48V battery or other power sources.

[ + ] represents positive, [ - ] represents negative. Reverse polarity connection can blow the internal fuse and may damage the inverter permanently.

Model

DC Input Voltage

Minimum Maximum

3-1-11. Chassis Ground: Connect the wire # 8 AWG to vehicle chassis.

WARNING!

Operating the inverter without a proper ground connection may cause electrical safety hazard.

15

3-2. Protections Features

DC Input (VDC)

Model

Over Voltage Under Under Voltage

Over Temperature Protection

INTERIOR HEAT SINK

Shutdown

Restart

Voltage

Alarm

Shutdown

Restart Shutdown

Restart Shutdown

Restart

12V 15.3 14.3 11.0 10.2

12.7

24V 30.6 28.6 22.0 20.3

25.2 70 ℃ 45 ℃ 90 ℃ 60 ℃

48V 61.2 57.2 44.0 40.8

49.7

3-3 DC Wiring Connections

Follow the instructions to connect the battery cables to DC input terminals of the Inverter. The cable should be as short as possible (less than 6 feet / 1.8 meters ideally) so that it can handle the required current in accordance with the electrical codes or regulations application. Inappropriate length of cables will deteriorate the inverter performance such as poor surge capability, frequent low-input voltage warnings, and shutdown. UVP warning occurs when DC voltage drops across the cables from the inverter to the batteries.

The longer or narrower the cables, the more the voltage drop.

I ncreasing your DC cable size will help improve the situation.

The following recommended cables are for the best performance of the inverter. (Apply both 120V and 230V versions)

Model No Wire AWG Inline Fuse

ST1000-112 / 212

ST1000-124 / 224

ST1000-148 / 248

ST1500-112 / 212

ST1500-124 / 224

ST1500-148 / 248

ST2000-112 / 212

ST2000-124 / 224

ST2000-148 / 248

ST2500-112 / 212

ST2500-124 / 224

ST2500-148 / 248

# 2

# 4

# 6

# 2

# 4

# 6

# 2/0

# 1/0

# 2

# 4/0

# 2/0

# 1/0

150 A

80 A

40 A

200 A

100 A

50 A

250 A

125 A

70A

400 A

200 A

100 A

16

3-3-1. Connect the cables to the power input terminals on the front panel of the inverter. The red terminal is positive (+) and black terminal is negative (-).

Insert the cables into the terminals and tighten screw to clamp the wires securely.

WARNING!

Make sure all the DC connections are tight (torque to 9 – 10 ft-lbs, 11.7 – 13 Nm). Loose connections could result overheat in a potential hazard.

WARNING!

The installation of a fuse must be on positive cable.

Failure to place a fuse on “+” cables running between the inverter and battery may cause damage to the inverter and will void warranty.

Also, only use high quality copper wire and keep the cable length short which is a maximum of 3 - 6 feet.

B attery to inverter cable connection

A W G #2 - #6

D o not place anything betw een battery cable lug and term inal surface.

A ssem ble exactly as show n.

17

ST-1000

ST-1500

N E

G (-)

P O

S (+

)

I N L I N E F U S E

PLASTIC COVER

18

RING TERMINAL

WASHER

SPRING WASHER

M8 NUT

Do not place anything between battery cable lug and terminal surface.

Assemble exactly as shown.

ST2000

ST2500

INLINE FUSE

WARNING:

REVERSE POLARITY WILL DAMAGE UNIT

DC INPUT

AC INPUT

0

1

BREAKER

POWER

STATUS

POWER

REMOTE

PORT

ON-OFF-REMOTE

POS(+) NEG(-)

19

3-4 Hard-wire Installation

AC wiring connections:

3-4-1. The AC wiring compartment is located on the front panel of the

ST series. Remove the AC wiring compartment cover to gain access to the AC terminal.

WARNING!

Before you connect AC wiring to the terminals of compartment cover, ensure to check the label in the compartment for correct connections. Wrong connection will damage the inverter.

CAUTION !

It is advised that all the electrical installation should conform to the local electrical codes and should be carried out by a certified electrician.

When the unit is feeding the internally inverted voltage (Power Status LED is green, power from the AC input source is not available), the current carrying conductors connected to the “L” and “N” terminals of the AC output will be isolated from the metal chassis of the inverter. Hence, during this condition, when the metal chassis of the inverter is connected to the earth ground, the

“N” terminal of the AC output will not be grounded (bonded) to the earth ground. Under this condition, the “N” terminal of the AC output will not be a

Neutral in the true sense. Do not touch this terminal as it will be at an elevated voltage(almost half the value the AC output voltage) with respect to the metal chassis / earth ground and may produce an electrical shock when touched!

When the unit is transferring power from the AC input source (Power Source

LED is orange), the grounding condition of the “N” terminal of the AC output will be the same as the condition of the “N” terminal of the AC input source. If the AC input source is the power supplied from the utility, the “N” terminal would be a Neutral in the true sense, will normally be bonded to the earth ground and will read almost 0 V with respect to the earth ground. In this case, touching this terminal will not be a shock hazard.

20

3-4-2. Connect AC output and AC input wiring to the ST series terminals.

Please take the following information as your reference.

Wire length / gauge color

ST1000&ST1500 ST2000&ST2500

AC

OUTPUT

AC INPUT

Line (L)

Neutral (N)

Line (L)

Neutral (N)

Ground

Black

White

Brown

Blue

Green / Yellow or Bare copper

Within 16 feet / AWG# Within 16 feet / AWG#

14~16

26~32 feet / AWG#

12~14

10 ~12

26~32 feet / AWG#

8 ~10

3-4-3. Please double check and review all connections to ensure the wires are in correct terminals and the connections are tight.

3-4-4.

Before connecting AC output and AC input terminals of the ST series, you can either use front compartment cover or a side hole to coil out.

Both AC input and AC output are coiled out from the front compartment cover when in production. If you want to change the position, you should open the top cover first, and then switch the wire of the front compartment cover and the plastic cover of the side of top cover.

21

WARNING !

If the connection distribution of the frond panel is not feasible for your appliances, ST series also provides another distribution on the side panel, to utilize it please be ensured to remove the plastic covers before installing the strain relief; moreover, replace the empty hole of front panel with removed plastic covers for safety purpose.

ST1000

ST1500

AC INPUT POWER

0

1

S S S S

1 2 3 4

REMOTE

PORT

DC INPUT

NEG(-) POS(+)

BREAKER

ON-OFF-REMOTE

REVERSE POLARITY

WILL DAMAGE UNIT

ST2000

ST2500

NEG(-)

DC INPUT

POS(+)

NEG(-) POS(+)

WARNING: REVERSE POLARITY WILL DAMAGE UNIT

AC INPUT

0

1

BREAKER

REMOTE

PORT

POWER

ON-OFF-REMOTE

22

3-5. Rear Panel Operation

Rear view

ST-1000/ST-1500

ST-2000/ST-2500

3-5-1. Fan Ventilation:

Be sure to keep it a distance (at least 1 inch) form surrounding things.

3-6. Installation

The power inverter should be installed in a location that meets the following requirements:

3-6-1. Dry – Do not allow water to drip or splash on the inverter.

3-6-2. Cool – Ambient air temperature should be between 0 ℃ and 40 ℃ , the cooler the better.

3-6-3. Safety – Do not install batteries in compartment or other areas where flammable fumes existence such as fuel storage areas or engine compartments.

3-6-4. Ventilated – Allow at least one inch of clearance around the

Inverter for air flow. Ensure the ventilation shafts on the rear

23

and bottom of the unit are not obstructed.

3-6-5. Dust-free – Do not install the Inverter in a dusty environments where dust, wood particles or other filings/shavings are present. The dust can be pulled into the unit when the cooling fan is operation.

3-6-6. Close to batteries – Avoid excessive cable lengths but do not install the inverter in the same compartment as batteries.

Use the recommended wire lengths and sizes (see section 4-3).

Do not mount the inverter at the place where it is exposed to the gases produced by the battery.

These gases are very corrosive and prolonged exposure will damage the inverter.

WARNING!

Shock Hazard. Before proceeding further, carefully check that the inverter is NOT connected to any batteries, and that all wiring is disconnected from any electrical sources . Do not connect the output terminals of the inverter to an incoming AC source.

3-7. Inverter Operation

Switch the power ON, then the power inverter is ready to supply AC power to the loads. Turn on the loads separately after the inverter is ON to prevent

OVP status caused by the surge power.

3-7-1. Switch the power ON, then the buzzer will send out beep sound. At the moment, the inverter is doing self-diagnosis. Then the LED’s indicators will also show various colors.

Finally, the buzzer will send out another beep, and the Input Level and

Status LED indicators will turn green. Then the inverter will start to work.

3-7-2. Switch the power OFF, then the inverter stops and all the lights that are

On will go Off.

3-7-3. Switch the power inverter and the test load ON, then the inverter will supply the power to the load. If you want to measure true RMS voltage output of the inverter, a meter such as FLUKE 45 BECKMAN 4410 or

TRIPLETT 4200 must be used.

24

4. Information

4-1. Troubleshooting

WARNING

Do not open or disassemble the ST series Inverter.

Attempting to service the unit may cause the risk of electrical shock or fire.

Problems and

No AC Power “Output”

STATUS illuminates the LED a. Power status light is blinking fast. b. Power status light is

Blinking slowly. c. Power status light is blinking Intermittently. d. Power status light is glowed steadily.

Over input voltage. Check input voltage

Low input voltage.

(UVP)

Thermal shutdown.

(OTP)

Short circuit.

Wiring error.

Over Loading (OLP)

Recharge battery.

Check connections and cables.

Improve ventilation.

Make sure ventilation, shafts of the inverter are not obstructed.

Lower ambient temperature.

Check AC wiring for short circuit.

Reduce load.

4-2. Maintenance

Very little maintenance is required to keep your inverter operating properly.

You should clean the exterior of the unit periodically with a damp cloth to prevent accumulation of dust and dirt. At the same time, tighten the screws on the

DC input terminals.

25

4-3. Warranty

We guarantee this product against defects in materials and workmanship for a period of 24 months from the date of purchase and will repair or replace any defective power inverters if you directly returned them to us with postage paid.

Please note that we are only responsible for ensuring our products are operational before delivering. This warranty will be considered void if the unit has been misused, altered, or accidentally damaged. Cotek is not liable for anything that occurs as a result of the user’s fault.

26

5. Appendices

28

29

30

31

32

33

34

35

36

37

38

2010.12._A0

39

Samlexpower ST 2000-224 Owner's Manual

ST Series

Pure Sine Wave

Power Inverter

User’s Manual

Contents

1. Important Safety Instructions

3. Introduction

Front view

B attery to inverter cable connection

WARNING!

CAUTION !

Rear view

4. Information

5. Appendices

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