AUXSOL ASN Series 3 Phase On Grid Solar Inverter Instruction Manual

: May 15, 2024
: AUXSOL

Table of Contents

ASN Series 3 Phase On Grid Solar Inverter
3 INTRODUCTION
- 3.3 Dimension
- 3.4 Display description
4 APPLICATION
5.2 Installation of inverter
5.3 Electrical connection
- 5.3.2 Connecting protective earth wire
- 5.3.3 Connect PV input cable
6 EQUIPMENT COMMISSIONING
Read User Manual Online (PDF format)
Download This Manual (PDF format)

ASN Series 3 Phase On Grid Solar Inverter

INSTALLATION

OPERATION MANUAL

▶ ASN series
▶ ASN – 70TL
▶ ASN – 75TL
▶ ASN – 80TL
▶ ASN – 90TL
▶ ASN – 100TL
▶ ASN – 110TL

Ningbo AUX Solar Technology Co., Ltd.
No.17 Fenglin Road, Cicheng Town, Jiangbei District, Ningbo City,
Zhejiang Province, China
86-574-8765-2201 www.auxsol.com
info@auxsol.com

Ningbo AUX Solar Technology Co., Ltd.

PREFACE

Summary
This document mainly introduces the installation, electrical connection, adjustment, maintenance and
troubleshooting methods of ASN series Three phase on grid solar inverter. Before installing and using
the inverter, please read this manual carefully to understand the safety information and get familiar with
the functions and characteristics of the inverter. The document may be updated from time to time.
Please obtain the latest version of the information and other product information from the official
website.

Applicable products

This document is applicable to the following 6 types of AUX ASN series three- phase on grid inverter:
ASN – 70TL / ASN – 75TL / ASN – 80TL
ASN – 90TL / ASN – 100TL / ASN – 110TL

Applicable staff

It is only applicable to professionals who are familiar with local regulations and standards and electrical
system, have received professional training and are familiar with the relevant knowledge of the product.

Symbol definition
To better use this manual, the following symbols are used to highlight important information. Please
read the symbols and instructions carefully.

Symbol definition

To better use this manual, the following symbols are used to highlight important information.
Please read the symbols and instructions carefully.

Danger:
Indicates a highly potential danger that, if not avoided, could result in death or serious
injury to personnel.

Warning:
Indicates a moderate potential hazard, which could lead to death or serious injury if not
avoided.

Watch out:
Indicates a low level of potential danger that, if not avoided, may result in moderate or
mild injury to personnel.

Watch out:
Emphasizing and supplementing the content may also provide tips or tricks for
optimizing product usage, which can help you solve a problem or save you time.

1 OPEN THE CARTON TO CHECK

1.1 Inspection before acceptance

Before signing for the product, please carefully check the following contents:

Check the outer packaging for any damage, such as deformation, holes, cracks, or other signs that
may cause damage to the equipment inside the packaging. If there is any damage, do not open the
packaging and contact your dealer.
Check if the inverter model is correct. If there is any discrepancy, do not open the packaging and
contact your dealer.
Check whether the type and quantity of delivered items are correct, and whether there is any damage
to the appearance. If there is any damage, please contact your dealer.

1.2 Packing list

Watch out:
• The number of PV DC input terminals matches the number of inverter DC input terminals.
• The datalogger and electricity meter kit are provided as optional, please refer to the actual situation.

1.3 Storage

If the inverter is not put into use immediately, please store it according to the following requirements:

Make sure that the outer packing box is not removed.
Make sure that the storage temperature is always – 40 °C~+70 °C and the storage relative humidity is
always 0~100% without condensation.
Make sure the inverter stacking height and direction are placed according to the label on the packing
box.
Make sure there is no risk of toppling the inverter after stacking.
Regular inspection is required during storage. If the package is damaged due to insect and rat bite,
the packaging materials shall be replaced in time.
The inverter shall be put into use after being stored for a long time and inspected and confirmed by
professionals.

2 SAFETY PRECAUTIONS

The safety precautions contained in this document must always be observed when operating the equipment.

****Watch out:
The inverter has been designed and tested in strict accordance with safety regulations, but as
electrical equipment, the relevant safety instructions must be observed before any operation on the
equipment. Improper operation may lead to serious injury or property damage.

2.1 General safety

Watch out:

Due to product version upgrading or other reasons, the document content will be updated from
time to time. If there is no special agreement, the document content cannot replace the safety
precautions in the product label. All descriptions in this document are for guidance only.
Please read this document carefully for products and precautions before installing the equipment.
Professional and qualified electrical technicians who shall be familiar with the relevant standards
and safety specifications of the project site must carry out all equipment operations.
Insulation tools and personal protective equipment shall be used to ensure personal safety during
inverter operation. Electrostatic gloves, wrist strap and antistatic clothing shall be worn when
contacting with electronic devices to protect the inverter from electrostatic damage.
Equipment damage or personal injury caused by inverter not installed, used or configured in
accordance with the requirements of this document or corresponding user manual is not within
the responsibility scope of equipment manufacturer.

2.2 PV string safety

Danger:

Please use the DC wiring terminals provided with the box to connect the inverter DC cable. If other
types of DC wiring terminals are used, serious consequences may be caused, and the equipment
damage caused thereby is not within the scope of the equipment manufacturer.
The solar array (solar panel) will have DC high voltage.

Warning:

PV panel used with inverters must have IEC 61730 class A rating or other equivalent standard
class.
Make sure good grounding of component frame and support system.
Do not ground the PV array positive (+) or negative (-) as this may cause serious damage to the
inverter.
Make sure that the DC cables are firmly connected without looseness after connection.
Use a multimeter to measure the positive and negative electrodes of the DC cable. Make sure
that the positive and negative electrodes are correct, no reverse connection occurs and the
voltage is within the allowable range.
Do not connect the same PV string to multiple inverters, or the inverter may be damaged.
In order to reduce the risk of fire, the inverter connected circuit requires an overcurrent protection
device (OCPD). DC OCPD shall be installed according to local requirements. All PV power
supplies and circuit conductors shall have disconnect connections in accordance with NEC
Article 690, Part II.

2.3 Inverter safety

Danger:

Please connect the inverter AC cable with the AC wiring terminals provided with the box. If other
types of AC wiring terminals are used, serious consequences may be caused, and the equipment
damage caused thereby is not within the scope of the equipment manufacturer.
Danger of electric shock. There are no serviceable parts inside the machine. Please do not
disassemble it. Please obtain service from qualified and recognized service technicians.

Warning:

Make sure that the voltage and frequency of the grid connection access point meet the inverter grid
connection specifications.
It is recommended to add circuit breaker or fuse and other protective devices at the AC side of the
inverter, and the specification of the protective device shall be 1.25 times greater than the
maximum AC output current of the inverter.
The protective ground wire of inverter must be firmly connected to make sure that the impedance
between neutral wire and ground wire is less than 10 Ω.
Copper core cable is recommended for AC output cable.

Identifications on inverter box are as follows:

2.4 Personnel requirements

Watch out:

Personnel responsible for installing and maintaining equipment must first undergo strict training,
understand various safety precautions, and master the correct operating methods.
Only qualified professionals or trained personnel are allowed to install, operate, maintain, or
replace equipment or components.

3 INTRODUCTION

3.1 Products introduction

The AUX ASN series three-phase on grid inverter integrates the energy management system in the PV
system to control and optimize the energy flow, adapt to the requirements of the smart grid and output
the power generated in the PV system to the utility/national grid.

3.2 Outlook introduction

1| LED screen|

Indicates the working status of the inverter.

---|---|---
2| DC switch|

Control DC input on or off.

3| PV DC port|

Connect PV module with PV wiring connector.

4| USB interface|

RS485 connection interface supports communication modules such as
bluetooth, Wi-Fi and 4G.

5| Multi-function
signal port|

RS485, DRM communication interface.

6| Utility/national grid
power interface|

Connect AC Utility/national grid supply.

7| Base handle|

For inverter handling.

8| Ground terminal|

Two in total, at least one of which shall be selected for connection.

9| Rack|

For mounting inverter on cladding

3.3 Dimension

Model	Weight	Size
ASN – 70TL	75kg

1007mm × 668mm × 357mm

ASN – 75TL| 75kg|

1007mm × 668mm × 357mm

ASN – 80TL| 75kg|

1007mm × 668mm × 357mm

ASN – 90TL| 75kg|

1007mm × 668mm × 357mm

ASN – 100TL| 80kg|

1007mm × 668mm × 357mm

ASN – 110TL| 80kg|

1007mm × 668mm × 357mm

3.4 Display description

Indicator diagram	Status	Description
Light strip	Green always on

Inverter is generating electricity.

4 APPLICATION

4.1 Grid form

Watch out:

To ensure the normal operation of inverter, it is recommended to be applied to the
network with N-wire.
The voltage of N to PE should be less than 10V.

4.2 Application scenario

Warning:

PV systems are not suitable for connecting devices that rely on stable power supply, such as
life-sustaining medical equipment. Please ensure that the power outage of the system does not
cause personal injury.
When the inverter is protected for a single time, the inverter can be automatically restarted.

No.	Component	Description
1	PV string assembly

PV string consists of PV modules connected in series

2| Inverter|

ASN series on grid inverter

3| AC circuit breaker|

Used for inverter and load protection and for interrupting AC supply
during maintenance

4| Smart meter| Optional

Recommended switch and circuit breaker specifications are as follows:

Model| AC circuit breaker Voltage(Vac)|

AC circuit breaker
Current(A)

---|---|---
ASN-70TL| ≥400| 200
ASN-75TL| ≥400| 200
ASN-80TL| ≥400| 200
ASN-90TL| ≥400| 200
ASN-100TL| ≥400| 250
ASN-110TL| ≥400| 250

4.3 Application mode

4.3.1 Full grid connection

If no load is required, all energy of the inverter can be supplied to the utility/national grid to realize
full grid connection of power generation.

4.4.1 Power derating

If no load is required, all energy of the inverter can be supplied to the utility/national grid to realize
full grid connection of power generation.

4.4 Function characteristics

The inverter will automatically reduce the output power when the operating environment is not ideal.
The following factors may cause power derating, so please try to avoid them during use:

Unfavorable environmental conditions such as direct sunlight, high temperatures, etc.
The inverter’s output power percentage has been limited by the app or web-end settings.
Variation with grid voltage frequency.
High input voltage.
High input current value.

5 INSTALLATION

5.1 Installation requirements
5.1.1 Environmental requirements

The protection class of inverter is IP66, which can be installed indoor and outdoor.
Equipment shall not be installed in flammable, explosive and corrosive environment.
The installation position shall be kept away from the accessible range of children and the position easy to be touched.
High temperatures may be present on the surface when the equipment is in operation to prevent burns.
The installation position shall avoid the water pipe and cable in the wall to avoid danger during punching.
The inverter shall avoid salt fog areas and installation environments such as sunshine, rain and snow. It is
recommended to install the inverter in a sheltered installation position. If necessary, a sunshade can be erected.
When installing the inverter, certain space shall be reserved around the inverter to ensure sufficient installation and
heat dissipation space.
Under the installation scenario of multiple inverters, when the space is sufficient, the installation mode of “straight
line” is recommended, When the space is insufficient, it is recommended to install the product in a zig-zag manner.
It is not recommended to install multiple inverters by overlapping.
The installation height of the equipment shall be convenient for operation and maintenance, ensure that the
equipment indicator lights, all labels are easy to see, and the terminal blocks are easy to operate.
The inverter is installed at an altitude lower than the maximum working altitude of 4000m.
Keep away from strong magnetic field environment to avoid electromagnetic interference. If there is a radio station
near the installation location or wireless communication equipment below 30MHz, please install the equipment
according to the following requirements:
Ferrite core with multi-circle winding or low-pass EMI filter at inverter DC input or AC output.
The distance between inverter and wireless electromagnetic interference equipment exceeds 30m.

5.1.2 Carrier requirements

Installation carriers must not be flammable and must be fire resistant.
Please make sure that the mounting carrier is solid and reliable and can bear the weight of inverter.
The equipment will vibrate during operation, so do not install it on the carrier with poor sound insulation,
so as to avoid disturbance to residents in the living area caused by the noise generated by the
equipment during operation.

5.1.3 Installation angle requirements

Recommended inverter installation angle: vertical or pitching ≤ 15°.
Do not invert, tilt forward, tilt backward beyond the angle and install the inverter horizontally.

5.1.4 Installation tool requirements

The following installation tools are recommended for installation. Other auxiliary tools can be used on
site if necessary.

auxiliary tools

5.2 Installation of inverter

5.2.1 Handling inverter

Watch out:

Transportation, turnover, installation and other operations must meet the requirements of national
and regional laws and regulations and relevant standards.
Please equip corresponding personnel according to the weight of the equipment to prevent the
equipment from exceeding the weight range that can be handled by human body and damaging
personnel.
Wear safety gloves to avoid injury.
Please make sure that the equipment is balanced during handling to avoid dropping.

5.2.2 Installation of inverter

Watch out:

Ensure that the inverter is securely installed to prevent injuries from falling.

5.3 Electrical connection

5.3.1 Safety precautions

Danger:

Specifications of all operation, cables and components used in electrical connection shall comply
with local laws and regulations.
Before electrical connection, please disconnect the DC switch and AC output switch of inverter to
make sure that the equipment is powered off. It is strictly forbidden to operate with electricity,
otherwise, electric shock and other hazards may occur.
Cables of the same type shall be bound together and arranged separately from cables of different
types. It is forbidden to wind or cross cables.
If the cable bears too much tension, it may lead to poor wiring. When wiring, please reserve a
certain length of the cable before connecting to the inverter wiring port.
When crimping the connecting terminal, please make sure that the conductor part of the cable is
fully contacted with the connecting terminal, and do not crimp the cable insulation skin together
with the connecting terminal, otherwise, the equipment may be unable to operate, or the inverter
terminal block may be damaged due to heating due to unreliable connection after operation.

Watch out:

When making electrical connection, please wear safety shoes, protective gloves, insulating gloves
and other personal protective equipment as required.
Only professionals are allowed to carry out operations related to electrical connection.

5.3.2 Connecting protective earth wire

Warning:

The protective grounding of the crate shell cannot replace the protective grounding wire of the AC
output port. When wiring, ensure that the protective grounding wires at the two places are reliably
connected.
In case of multiple inverters, make sure that the protective earthing point of all inverter crate
enclosures is equipotentially connected.
To improve the corrosion resistance of the terminal, it is recommended to apply silicone or paint
on the external of the grounding terminal for protection after the connection and installation of the
protective ground wire.
Please prepare the protective ground wire, and the recommended specification:
Type: Outdoor single-core copper wire
Conductor sectional area: 35-120mm ² (Phase cable diameter/2)

5.3.3 Connect PV input cable

Danger:

Do not connect the same PV string to multiple inverters, otherwise the inverter may be damaged.
Please make sure that the maximum short circuit current and maximum input voltage of each
MPPT are within the allowable range of the inverter.
Please make sure that the positive electrode of the PV string is connected to the PV port+of the
inverter, and the negative electrode of the PV string is connected to the PV port – of the inverter.
Please prepare your own PV input cable. Recommended specification:
Type: Outdoor PV multi-core copper wire
conductor cross-section：4-6mm² ( 12 – 10AWG )
Outer diameter of conductor insulation layer：φ3~7mm

Warning:

PV string output does not support grounding. Before connecting PV string to inverter, please make
sure that the minimum insulation resistance to ground of PV string meets the minimum insulation
impedance requirements (R=maximum input voltage/30mA).
Make sure that the DC cables are firmly connected without looseness after connection.
Use a multimeter to measure the positive and negative electrodes of the DC cable and ensure that
the positive and negative electrodes are correct without reverse connection, and the voltage is
within the allowable range.

5.3.4 Connecting AC cable

Danger:

In order to ensure that the inverter and the grid can be safely disconnected from the grid in case of
abnormal conditions, please connect the AC switch on the AC side of the inverter. Multiple
inverters cannot be connected to one AC switch at the same time. Please select proper AC switch
according to local regulations.
Please prepare the AC output cable. See the figure for the recommended specification:
If multi-core copper wire is selected, supporting crimping terminal shall be used for assembly. It is
forbidden to directly press multi-core copper wire into the connector.

Warning:

Residual current monitoring unit (RCMU) is integrated in the inverter. When the inverter detects
leakage current greater than the allowable value, it will quickly disconnect from the grid.
During wiring, the AC cable is completely matched with “L1”, “L2”, “L3”, “N” and grounding port of
AC terminal. If the cable is connected improperly, the equipment will be damaged.
Make sure that the core is completely inserted into the terminal hole without exposure.
Ensure that the cables are firmly connected, otherwise the terminal may be overheated and the
equipment may be damaged when the equipment is operating.

Inverter AC connector interface
L1
L2
L3
N

Three-phase
L1(A)
L2(B)
L3(C)
N Neutral wire
PE grounding wire

Remark
Must be connected

port

5.3.5 Smart meter (optional)

Watch out:

When connecting communication cables, please ensure that the definition of the wiring port
matches the device perfectly, and the cable routing should avoid interference sources, power
cables, etc. to avoid affecting signal reception.
The electrical meter and CT are shipped with the inverter, and the relevant parameters have been
preset at the factory. Please do not modify the relevant parameters of the electricity meter and CT.
Each inverter needs to be connected to a separate meter. Do not connect multiple inverters to the
same electrical meter.
To ensure the normal use of the electricity meter and CT, please ensure that the CT is connected
to the phase cable, CT1 is connected to L1, CT2 is connected to L2, and CT3 is connected to L3.
Please connect CT according to the current direction. If it is reverse, CT reverse fault will be
reported.
The length of CT cable along with the inverter is 3m or 5m. Please install the meter and CT
reasonably according to the actual situation.
Please prepare the meter communication cable.
The communication cable connecting the meter to the inverter supports a maximum of 100m, and
the port definition is as follows:

The ASN three-phase inverter can meet the requirements of the Anti-counter- current function through one electrical
meter and three CTs. It can be set to separate phase control and three-phase total control as required. Take the 110KW
model as an example:
Minimum single-phase control: three-phase on grid power is regulated by multiplying the minimum single-phase
power by 3. For example, if the load of L1/L2/L3 phase is 30kW/33kW/36kW respectively (if the 110kW model does not
consider 1.1 times of power output, the single-phase maximum grid connection power is 36.7kW), then the grid
connection power of inverter is limited to 30 * 3=90kW, and the remaining power required will be purchased from the
grid.
Note: In this control mode, the inverter will not transmit power to the grid, but it needs to purchase power from the
grid. It is applicable to the situation where three-phase load is unbalanced and power cannot be transmitted to the grid.
Total power control: sum regulation of three-phase grid-connected power. If the load of L1/L2/L3 phase is
30kW/33kW/36kW respectively, the grid-connected power of inverter is limited to 30+33+36=99kW, the output power of
each phase is limited to 33kW, and the remaining power required will be purchased from the utility/national grid.
Note: In this control mode, when the three-phase load is unbalanced, the inverter has the situation that the minimum
load corresponding phase sends power to the grid and the maximum load corresponding phase buys power from the
grid. Suitable for three-phase load balancing.

5.3.6 DRM control (optional)

Watch out:

When connecting the communication cable, please ensure that the wiring port
definition is completely matched with the equipment, and the cable route shall avoid
the interference source, power cable, etc. to avoid affecting the signal receiving.
Please provide meter communication cable.
The DRM communication cable to the inverter can be connected to the standard
RJ45 crystal head, and the port definition is as follows:

5.3.7 Datalogger connection (optional)

Watch out:
See the official website for details of datalogger.

6 EQUIPMENT COMMISSIONING

AND MAINTENANCE

6.1 Check before power-on

Items	Checking items	Standard
1	Installation of inverter

The inverter shall be installed correctly, firmly and reliably

2| Cable arrangement|

Cables shall be reasonably arranged and well protected, without damage

3| Datalogger|

The data logger shall be installed correctly, firmly and reliably

4| Identifying|

The safety signs and warning labels on the inverter are not blocked or
damaged

5| Switch|

” DC SWITCH “and all switches connected to the inverter are” OFF “

6| Cable connection|

The AC output cable, DC input cable and grounding wire are connected
correctly, firmly and reliably

7| Unused terminals
and interfaces|

Unused terminals and interfaces are protected with waterproof covers

8| Circuit breaker|

Reasonable selection of AC and DC circuit breakers

9| Environmental
requirements|

Reasonable installation space, clean and tidy environment,
no construction remains

6.2 Power on the equipment

Step 1: Please use the multimeter to measure the grid voltage at the switch between the grid input and
the inverter, to make sure that the voltage is in the allowable range of the inverter.
Step 2:Close the AC switch between inverter and utility/national grid.
Step 3:Set “DC SWITCH” on the inverter to “ON”.
Step 4:Observe the inverter LED indicator and check the inverter operation status

6.3 Set inverter parameters via APP

Watch out:
To ensure that the inverter works properly, please use the AUXSOL application program to complete
the inverter parameter setting.

Watch out:
Please also obtain the operating instructions of the communication rod from the official website, to
set the contents more consistent with the application scenario.

6.4 Power off the equipment

Danger:

When operating and maintaining the inverter, please turn off the inverter for treatment. Live
operation of the equipment may cause damage to the inverter or electric shock.
After the inverter is powered off, it will take a certain amount of time for internal components to
discharge. Please wait until the equipment is fully discharged according to the required label time
requirements.

Step 1: Disconnect the AC switch between the inverter and the utility/ national grid.
Step 2: At the AC switch between the inverter and the utility/ national grid, measure the voltage on the
power grid side with a multi-meter to confirm that the power has been cut off.
Step 3: Observe the inverter LED indicator, and confirm to enter standby.
Step 4: Set “DC SWITCH” on inverter to “OFF”.

6.5 Equipment removal

Danger:
• Make sure inverter is power off.
• Wear personal protective equipment when operating the inverter.
Successively remove all electrical connections of inverter, including DC cable, AC cable, communication
cable, communication module and protective earth wire.
Remove the inverter from the back cladding.
Remove the back cladding.
Properly save the inverter and ensure that the storage conditions meet the requirements if the subsequent

6.6 Equipment scrapping

If the inverter cannot be used anymore and needs to be scrapped, please dispose according to the electrical waste
disposal requirements of the inverter country/region.
The inverter shall not be treated as household garbage.

6.7 Trouble shooting

Please troubleshoot according to the following methods. If the troubleshooting methods cannot help you, please
contact the after-sales service center.
When contacting the after-sales service center, please collect the following information for quick solution.

Inverter information, such as serial number, software version, equipment installation time, fault occurrence time,
fault occurrence frequency, etc.
Equipment installation environment, such as weather conditions, whether components are sheltered and whether
there is shadow, etc. It is recommended to provide photos, videos and other documents to assist in analyzing
problems.
Utility/National grid condition.
If there is only indicator mode for inverter, fault information can be viewed through back platform/APP mode.

Defect
codes| Defect name| Solutions
---|---|---
602| S-phase inverter overcurrent|

1. Check whether the voltage frequency of the
power grid is stable. If the power grid
fluctuates greatly, restart the inverter.
2. If the fault still exists after restarting, contact
the installer.

1. Restart inverter.
2. If it still fails after restarting, contact the
installer.

1. The inverter shall be wall-mounted in the
environment where the ambient temperature
does not exceed 60 °C.
2. If the installation method and environment are
normal, please contact the installer.

1503| PV module is under excessively
high temperature
1504| Inverter module is under
excessively high temperature
1601| The DC component of R-phase
inverter current exceeds the
standard|

1. Restart inverter.
2. If it still fails after restarting, contact the installer.

1602| The DC component of S-phase
inverter current exceeds the
standard
1603| The DC component of T-phase
inverter current exceeds the
standard
Defect
codes| Defect name| Solutions
---|---|---
1901| PV Input overcurrent|

1. Restart the inverter.
2. If the fault still exists after restarting,
contact the installer.

2001| PV Input overcurrent
2101| PV Input arc failure|

Disconnect the PV/battery/utility (national grid)
input of the inverter and check for any
damage/poor contact in the wiring from the solar
panel to the input end of the inverter.

2201| Reverse connection of PV1|

Disconnect inverter PV/utility (national grid)
input and exchange PV positive and negative
pole connections.

Contact the installer.

2401| Internal fan failure
2402| External fan failure
2901| ISO Fault|

1. Confirm whether the insulation of PV input wiring is normal.
2. Wait for the inverter to automatically recover, otherwise
contact the installer.

3001| GFCI Sensor fault|

1. Restart the inverter.
2. If the fault still exists after restarting, contact the installer.

3002| GFCI Out of limits|

1. Confirm whether the insulation of PV/utility (national grid)
input wiring is normal.
2. Contact the installer.

3303| Relay failure|

1. Restart the inverter.
2. If the fault still exists after restarting, contact the installer.

4301| DSP&ARM Protocol Version
Mismatch|

Contact the installer.

4503| Memory protection
4304| Server communication
exception

6.8 Regular maintenance

Danger:
The machine must be kept power off state during maintenance.

Watch out :
Regular maintenance can maintain the stability of inverter performance.

Content Method Cycle

System cleaning – Check the cooling fin and air inlet/outlet for foreign matter and dust.
Especially the fan needs regular maintenance to prevent debris from
blocking the fan and affecting the operation of the inverter – half year

DC switch – Turn on and off the DC switch for 10 times continuously to ensure the
normal function of DC switch. – one year

Electrical connection – Check whether the electrical connection is loose, whether the cable
appearance is damaged and whether there is copper leakage. – half year

Tightness – Check whether the tightness of the equipment inlet hole meets the r
equirements. If the gap is too large or not sealed, it shall be re-closed. – one year