Phocos Any-Grid Series Operating manual

Pure Sine Wave Grid Inverter with
MPPT Solar Charge Controller
PSW-G-4KW-3P
PSW-G-5KW-3P
PSW-G-6KW-3P
PSW-G-8KW-3P
PSW-G-10KW-3P
User and Installation Manual
English
www.phocos.com

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1.0 Introduction ................................................................................................................................................... 2
2.0 Important Safety Information ....................................................................................................................... 2
Symbols / Icons ..................................................................................................................................................................................... 2
Safety Guidelines ................................................................................................................................................................................. 3
3.0 Product Overview .......................................................................................................................................... 4
Solar Grid-Tied Power Generation System ................................................................................................................................. 5
Product Appearance ........................................................................................................................................................................... 6
Nameplate .............................................................................................................................................................................................. 7
Model Names ........................................................................................................................................................................................ 7
Dimensions and Weight .................................................................................................................................................................... 8
4.0 Storage ........................................................................................................................................................... 9
5.0 Installation ..................................................................................................................................................... 9
Package Contents and Inspection................................................................................................................................................. 9
Before Installation .............................................................................................................................................................................. 10
Mechanical Installation ................................................................................................................................................................... 12
Electrical Installation ........................................................................................................................................................................ 14
6.0 Operation ..................................................................................................................................................... 17
Inspection before Operation ......................................................................................................................................................... 18
Grid-Tied Operation .......................................................................................................................................................................... 18
Stopping Operation .......................................................................................................................................................................... 18
Maintenance ........................................................................................................................................................................................ 19
7.0 Display Panel ................................................................................................................................................ 22
LED Indicators ..................................................................................................................................................................................... 22
Operation Panel .................................................................................................................................................................................. 23
LCD Screen ........................................................................................................................................................................................... 23
Functions Operation ......................................................................................................................................................................... 24
Grid Certification Selection ............................................................................................................................................................ 33
8.0 Monitoring Communication ........................................................................................................................ 35
Standard Communication .............................................................................................................................................................. 35
Optional Communication ............................................................................................................................................................... 36
9.0 Troubleshooting........................................................................................................................................... 37
10.0 Technical Specifications ............................................................................................................................... 38
11.0 Warranty ....................................................................................................................................................... 39
Conditions ............................................................................................................................................................................................ 39
Liability Exclusion .............................................................................................................................................................................. 39

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1.0 Introduction
Dear customer, thank you for choosing this quality Phocos product. This manual is intended to provide detailed
information of product information, installation, application, trouble shooting, precautions and maintenance of Any-
Grid™ series PSW-G grid-tied solar inverters. The manual does not contain all the information of the photovoltaic
system. Please read this manual carefully and follow all safety precautions seriously before any moving, installation,
operation and maintenance to ensure correct use and high performance of operation on the inverter.
The use of Any-Grid series PSW-G grid-tied solar inverters must comply with local laws and regulations on grid-tied
power generation.
The manual needs to be kept intact and be available at all times.
2.0 Important Safety Information
Any-Grid PSW-G series grid-tied solar inverters are designed and tested strictly in accordance with relevant
international safety standards. As an electrical and electronic device, all relevant safety regulations must be strictly
complied during installation, operation, and maintenance. Incorrect use or misuse may result in:
 Injury to the life and personal safety of the operator or other people.
 Damage to the inverter or other property belonging to the operator or other people.
In order to avoid personal injury, damage to the inverter or other devices, please strictly observe the following safety
precautions.
This chapter mainly describes various warning symbols in operation manual and provides safety instructions for the
installation, operation, maintenance and use of the PSW-G series grid-tied solar inverters.
Symbols / Icons
This manual provides relevant information with icons to highlight the physical and property safety of the user to
avoid device damage and physical injury.
The icons used in this manual are listed below:
Icons Name Instruction Abbreviation
Danger
Danger Serious physical injury or even death may occur
if not following the relative requirements.
Warning
Warning Physical injury or damage to the devices may
occur if not following the relative requirements.
ESD (electrostatic
discharge) sensitive area
Electrostatic
sensitive area or
components
Damage may occur if not following the relative
ESD protection requirements.
Hot area
Hot area Areas of the device may become hot. Do not
touch.

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Safety Guidelines
 After receiving this product, first make sure that the product is well packaged. If you have any
questions, please contact the shipping company or local distributor immediately.
 Installation of PV inverters must be performed by professional technician who has been specially
trained, thoroughly read and familiar with all the contents of this manual and familiar with the safety
requirements of the electrical system.
 Do not carry out any wiring and inspection or changing components when the power supply is
applied.
 Ensure that there is no electromagnetic interference from other electrical and electronic equipment
on the installation site.
 Do not refit the inverter unauthorized.
 All the electric installation needs to be compliance with the national or local laws and standards.
 The temperature of individual parts or the enclosure of the inverter, especially the heat sink, may
become hot in normal operation. There is a danger of burning. Do not touch.
 Unit must be reliably grounded before operation.
 Do not open the cover of inverters unauthorized. The electrical parts and components inside the
inverter are electrostatic. Take measurements to avoid electrostatic discharge during relevant
operation.
 Ensure that DC and AC side circuit breakers have been disconnected and wait at least 5 minutes
before wiring and checking.
Note: Technical personnel who can perform installation, wiring, commissioning, maintenance, troubleshooting and
replacement of the PSW-G series grid-tied solar inverters must meet the following requirements:
 Operators need professional training.
 Operators must read this manual completely and master the related safety precautions.
 Operators need to be familiar with the relevant safety regulations for electrical systems.
 Operators need to be fully familiar with the composition and operating principle of the entire grid-tied
photovoltaic power generation system and related standards of the countries/regions in which the project is
located.
 Operators must wear personal protective equipment.
Delivery and Installation
 Keep the package and unit complete, dry and clean during storage and delivery.
 Please remove and install the inverter with two or more people, because of the inverter is heavy.
 Remove and install the inverter with appropriate tools to ensure safe and normal operation and
avoid physical injury or death. The people also need mechanical protective measures, such as
protective shoes and work clothes.
 Only qualified electricians are allowed to install the inverter.
 Do not put and install the inverter on or close to combustible materials.
 Keep the installation site away from children and other public places.
 Remove the metal jewelry such as ring and bracelet before installation and electrical connection to
avoid electric shock.
 Do cover solar modules with light-tight materials before electrical connection. Exposed to
sunlight, solar modules will output dangerous voltage.

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 The inverter input voltage cannot exceed the maximum input voltage; otherwise inverter damage
may occur.
 The positive and negative pole of solar modules cannot be grounded, otherwise irrecoverable
damage may occur.
 Ensure the proper grounding of the inverter, otherwise, improper connection or no grounding
may cause stop of the inverter.
 Ensure reliable installation and electrical connection.
Note: PSW-G series grid-tied solar inverters are only for crystalline silicon solar modules.
Grid-Tied Operation
 Only qualified electricians are allowed to operate the inverter under the permission of local power
departments.
 All electrical connections must meet the electrical standards of the countries/regions in which the
project is located.
 Ensure reliable installation and electrical connection before operation.
 Do not open the cover of inverter during operation or voltage is present.
Maintenance and Inspection
 Only qualified electricians are allowed to perform the maintenance, inspection, and components
replacement of the inverter.
 Contact with the local dealer or supplier for maintenance.
 In order to avoid irrelevant personnel from entering the maintenance area during maintenance,
temporary warning labels must be placed to warn non-professionals to enter or use fence for
isolation.
 Firstly, disconnect all power supplies of the grid to the inverter before any maintenance, and then
disconnect the DC breakers and wait for at least 5 minutes until the inverter is discharged before
maintenance.
 Please follow electrostatic protection norms and take correct protective measures because of the
electrostatic sensitive circuits and devices in the inverter.
 Do not use parts and components not provided by our company during maintenance.
 Restart the inverter after settling the fault and problem which may affect the safety and
performance of the inverter.
 Do not get close to or touch any metal conductive part of the grid or inverter, otherwise electric
shock, physical injury or death and fire may occur. Please do not ignore the warning icons and
instructions with “electric shock”.
End of Life
 Do not dispose of the inverter together with household waste. The user has the responsibility and
obligation to send it to the designated organization for recycling and disposal.
3.0 Product Overview
This chapter mainly describes the appearance, packaging accessories, name plate, technical parameters and other
information of PSW-G series grid-tied solar inverters.

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Solar Grid-Tied Power Generation System
Application
The photovoltaic grid-tied power generation system consists of solar modules, grid-tied inverter, metering devices
and public grid.
Figure 1: Application of PSW-G series grid-tied solar inverters
Grid-tied solar inverter is the core of photovoltaic power generation system. The solar energy can be converted into
DC electric energy through solar modules and then be changed into sinusoidal AC energy which has the same
frequency and phase with the public grid by grid-tied solar inverters, and then be fed to the grid.
PSW-G series grid-tied solar inverters are only applied in solar grid-tied power generation system and its DC input are
only composed of crystalline silicon solar modules whose negative and positive poles are not grounded.
 The recommended solar modules need to comply with IEC61730 Class A standard.
Supported Grid Connection Structure
PSW-G series grid-tied solar inverters support TN-S, TN-C, TN-C-S , TT and IT grid connection. When applied to the TT
connection, the N-to-PE voltage should be less than 30V.
Figure 2: Type of grid

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Product Appearance
Figure 3: Product appearance
No. Name Description
1 Cover
2 LED display / operational panel LED indicators, LCD and keypad
3 DC switch On –Off of the DC input
4 DC input port For the connection of solar modules
5 Communication port RS485 and EXT communication port
6 AC terminal For the connection of AC output
7 Cooling chamber
8 Back panel mounting screws
9 Name plate For rated parameters and safety precautions of the inverter
10 Fan Only applicable for 8 and 10 kW nominal power units

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Nameplate
Figure 4: Inverter nameplate
1. Trademark and product type
2. Company name
3. Model and technical parameters
4. Certifications
5. Serial number
6. Country of origin
Model Names
Inverter Type Model Name Rated Output Power (Watt)
Three-phase grid-tied solar inverter PSW-G-4KW-3P 4000
Three-phase grid-tied solar inverter PSW-G-5KW-3P 5000
Three-phase grid-tied solar inverter PSW-G-6KW-3P 6000
Three-phase grid-tied solar inverter PSW-G-8KW-3P 8000
Three-phase grid-tied solar inverter PSW-G-10KW-3P 10000
Note: For technical parameters of grid-tied solar inverter refer to chapter 10.
1
4
3
5
6
2

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Dimensions and Weight
Figure 5: Inverter dimensions
Model Height (mm) Width (mm) Depth (mm) Net Weight (kg)
PSW-G-4KW-3P 490 360 150 20
PSW-G-5KW-3P 490 360 150 20
PSW-G-6KW-3P 490 360 150 20
PSW-G-8KW-3P 530 360 150 23
PSW-G-10KW-3P 530 360 150 23
Figure 6: Carton packaging dimensions
Model Height (mm) Width (mm) Depth (mm) Gross Weight (kg) Packaging Material
PSW-G-4KW-3P 630 470 284 22 Cardboard
PSW-G-5KW-3P 630 470 284 22 Cardboard
PSW-G-6KW-3P 630 470 284 22 Cardboard
PSW-G-8KW-3P 675 470 284 25 Cardboard
PSW-G-10KW-3P 675 470 284 25 Cardboard

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4.0 Storage
If the inverter is not put into use immediately, the storage of inverter should meet the following requirements:
 Do not remove the outer carton packaging.
 The inverter needs to be stored in a clean and dry place. Prevent the erosion of dust and water vapor.
 The storage temperature should be kept at -40 °C ~ +70 °C, and the relative humidity should be kept at
5%RH ~ 95%RH.
 The stacking of inverters is recommended to be placed according to the number of stacking layers in the
original shipment. Place the inverter carefully during stacking to avoid personal injury or equipment
damage caused by the falling of equipment.
 Keep away from chemically corrosive substances that may corrode the inverter.
 Periodic inspections are required. If damages are found by worms and rats, or packages are found to be
damaged, the packaging materials must be replaced in time.
 After long-term storage, inverters need to be inspected and tested by qualified personnel before put into
use.
5.0 Installation
This chapter describes how to install the inverter and connect it to the grid-tied solar system (including the
connection between solar modules, public grid and inverter).
Read this chapter carefully and ensure all installation requirements are met before installation. Only qualified
electricians are allowed to install the inverter.
Package Contents and Inspection
The inverter has been thoroughly tested and rigorously checked before delivery, but damage may still occur during
transportation. Before unpacking, check carefully whether the product information in the order is consistent with
that on the nameplate of the package box and whether the product package is intact. If any damage is detected,
please contact the shipping company or the supplier directly. Please also provide photos of the damage to get our
fastest and best service.
Check the following after unpacking:
1. Ensure no damage to the inverter unit.
2. Ensure the operation manual, port and installation accessories in the package.
3. Ensure no damage to the items in the package and that no items are missing.
4. Ensure the information of the order is the same as that of the name plate.
5. The standard delivery list is shown as below.
Packing list:

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Figure 7: Inverter packing list
No. Name Quantity
1 Inverter 1 pc.
2 Installation bracket 1 pc.
3 User and installation manual 1 pc.
4 Assembling bolt M5x20 2 pcs.
5 Expansion bolts M6x60 4 pcs.
6 Communication connector 1 pc.
7 DC connector (PV) 2 pairs
8 AC connector 1 pc.
Before Installation
Installation Tools
No. Installation Tool Instruction
1 Marking pen Mark the installation hole
2 Electric drill Drill in the bracket or wall
3 Hammer Hammer on the expansion bolts
4 Monkey wrench Fix the installation bracket
5 Allen driver Fasten the screws, remove and install AC wiring box
6 Straight screwdriver For AC wiring
7 Megger Measuring insulation performance and impedance
8 Multimeter Check the circuit and AC and DC voltage
9 Electric soldering iron Solder communications cable
10 MC4 connector wire crimper Crimp DC / PV terminals
Installation Location
1. The height of the installation position should ensure that the line of sight is at the same level as the LCD for
viewing the parameters of inverter conveniently.
2. Select a well-ventilated place sheltered from direct sun radiation and rain.
3. Allow sufficient space around the inverter to enable easy installation and removal from the mounting
surface and air convection. Refer to Figure 8.
4. The ambient temperature of installation should be -25 °C ~ 60 °C
5. The installation site should be away from electronic devices which can generate strong electromagnetic
interference.

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6. The inverter needs to be installed on a firm and sturdy surface, such as wall and metal bracket etc.
7. The installation surface should be perpendicular to the horizontal line. Ensure it is mounted with a tilt angle
backwards of no more than 15° to facilitate heat dissipation. Refer to Figure 9.
8. The installation should ensure that the inverter is reliably grounded, and the material of grounded metal
conductor should be consistent with the metal material reserved for the grounding of the inverter.
Figure 8: Installation location space around inverter (mm)
Ensure there is sufficient space for heat dissipation. In generally, below space requirement should be met:
Side Minimum Clearance
Left / Right 400 mm
Top / Bottom 500 mm
Figure 9: Installation orientation

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 Do not open the cover of the inverter or replace any part as incomplete inverter may cause electric
shock and damage the device during operation and the device warranty will be lost.
Cable Specification
The following cable cross-sections must be adhered to:
DC Input AC Output
Min. cross-section in mm²
(length ≤ 50m)
Min. cross-section in mm²
(length ≥ 50m)
Min. cross-section in mm²
L N/PE
4 6 4
Circuit Breakers
In order to ensure safe operation of the inverter and circuits, it is recommended to configure the corresponding
breakers or fuses on the DC input side and AC output side of the inverter.
Nominal
Inverter
Power
DC Input AC Output
Recommended DC breaker Recommended AC breaker
4 ~ 6 kW DC1000V, C16A, 2P AC400V, C16A, 4P
8 ~ 10 kW DC1000V, C25A, 2P AC400V, C25A, 4P
Mechanical Installation
The material for fixing the inverter and the installation mode vary with the different installation sites. It is
recommended to install the inverter vertically to the firm wall or metal bracket. Here we take wall installation as an
example to introduce the installation matters of the inverter.
As shown in the Figure 9, the overall installation of the inverter should be vertical to the horizontal surface.
Figure 10: Installation bracket of inverter
Dimensions of installation bracket:
Installation Holes
A B
260 mm 45 mm
Installation steps:
1. Take installation bracket from the package.
2. Place the bracket at the appropriate height and position on the wall. Mark the hole positions according to
the fixing holes as shown in Figure 11.

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Figure 11: Determine the hole position
3. Drill 4 installation holes on the wall with electric drill, about 40 ~ 50 mm deep. As shown in Figure 12.
Figure 12: Drilling holes
4. Install the expansion bolts as shown in Figure 13 with a hammer.
Figure 13: Expansion bolts installation
5. Fix the installation bracket on the expansion bolts according to Figure 14. Ensure the installation is firm
enough, the tightening torque is 13 Nm.

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Figure 14: Fix the installation bracket
6. Hang the inverter onto the installation bracket and ensure the installation is firm enough, as shown in Figure
15.
Figure 15: Installation of inverter
7. Finally, fasten the inverter and the bracket with M5x20 screws and tighten the screws left and right of the
inverter to 3 Nm. See Figure 16.
Figure 16: Installation of M5x20 screws
Electrical Installation
This section describes the electrical connection related content and related safety precautions. Figure 17 is the
schematic diagram of the photovoltaic grid-connected system.

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Figure 17: Schematic of PV grid-connected system
 Electrical connection must be carried out by professional technicians as wrong operation may
cause damage to the device, physical injuries or even death during system operation.
 All the electrical installation must conform to the national and local electrical safety regulations.
 Ensure all the cables are installed firmly according to the specified safety requirements and free
from any damage.
 It is not allowed to close the AC and DC breakers before the inverter is electrically connected.
Note
 Read and follow the instructions provided in this section. Strictly follow the requirements when
operating.
 Always note the rated voltage and current defined in this manual. Never exceed the limits.
Connection of Solar Panels
Figure 18: Connection between DC connector and solar modules
 PV strings can be connected to inverter only after protection measures which conform to local
electrical regulations are taken and the technical parameters in this manual are fulfilled.

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Connection steps:
1. Lightning, short-circuit and other protection measures which meet the local electrical safety laws and
regulations are needed before the PV connection.
2. Connect the output cables of solar modules to the DC connector of inverter as Figure 14 shows. Loosen the
nut of the connector and remove about 8-10 mm from the isolation layer of the DC cable. Insert the
conductor into the appropriate position of the connector, crimp the MC4 DC terminal of the inverter and
tighten the nut with a torque of 2.5 ~ 3 Nm. The wiring of negative pole is the same as that of the positive
pole. Ensure the poles of solar modules are well connected with the connectors.
 The PV string connected to Any-Grid PSW-G series inverter must adopt the MC4 DC connector
configured especially for the inverter, do not use other connection devices without authorization
from our company, otherwise damage to the device, unstable operation or fire may occur and our
company will not undertake quality assurance or assume any direct or joint liability thereof.
3. After the DC connector is connected, use a multimeter to measure the voltage of the DC input string, verify
the polarity of the DC input cable, and ensure that the voltage of each string is within the allowable range of
the inverter, as shown in Figure 19.
Figure 19: DC input voltage measuring
4. Connect the DC connector with the inverter and ensure tightly fastened.
5. When removing the DC connector from the inverter, insert the tip of a straight screwdriver into the raised
hole in the middle of the connector, and force the movable end of the connector to exit.

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AC Connection
Figure 20: AC connection of single-phase inverter
Description of the AC connector:
AC connector pins Three-phase grid connection Notes
1 L1 (A)
2 L2 (B)
3 L3 (C)
N N
PE Must be connected
AC connection steps:
1. Before connecting the single-phase AC grid cable to the inverter, take lightning and short circuit protection
measures in accordance with the local electrical safety codes.
2. As shown in Figure 20, connect and fasten L1, L2, L3, N and PE conductors of the three-phase grid to the AC
terminal with 0.5 Nm torque. Tighten the terminal housing with a tightening torque of 2.5 ~ 3 Nm, and then
connect the terminal to the AC port of the inverter.
3. Connect the DC output cable of the PV modules to the DC terminal of the inverter.
 Only qualified cables under the local electrical safety laws and regulations and compliant with the
technical parameters of this manual are allowed to connect to the inverter.
 Only with the permission of the local electric power company can the inverter be connected to the
utility grid.
6.0 Operation
This chapter describes detailed operation of the inverter which involves the inspection before operation, grid-tied
operation, stopping and maintenance of the inverter.

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Inspection before Operation
The following items must be checked strictly before running the PV grid-connected inverter (including but not
limited to):
1. Ensure the installation site meets the requirements mentioned in section “5.2 Installation”  “Installation
Location” for easy installation, removing, operation and maintenance.
2. Ensure the mechanical installation meet the requirement mentioned in section “5.2 Installation” 
“Mechanical Installation”.
3. Ensure the electrical installation meets the requirement mentioned section “5.2 Installation”  “Electrical
Installation”.
4. Ensure all switches are “off”.
5. Ensure the open circuit voltage of the PV module complies with the DC side parameter requirements of the
inverter, as stated in the section 10 of this manual.
6. Ensure all electrical safety precautions are clearly identified on the installation site.
 In order to ensure a safe, normal and stable operation of the PV power generation system, all the
newly installed, renovated and repaired PV grid-connected power generation system and its grid-
connected inverter must undergo inspection before running.
Grid-Tied Operation
Start the inverter according to below steps to achieve grid-connected operation of the inverter:
Note
 You must select the country in which the inverter is operating to set grid-connected standards
during the initial operation of the inverter, see details in section 7.5.
 Only with the permission of the local electric power company can the inverter be connected to the
utility grid.
Please start the inverter as follows:
1. Ensure the requirements mentioned in section 6.1 are met.
2. Switch on the breakers at the AC side.
3. Switch on the integrated DC switch.
4. Switch on the breakers on the DC side.
5. Observe the LED indicator state of the inverter and the information displayed by LCD.
6. Refer to chapter 7 for LED state indicators and LCD display information.
7. Ensure the inverter remains in a powered-on state for at least 30 minutes to complete charging of the
internal clock battery, in order to avoid time-keeping issues.
Run (left) LED:  Green indicator blinks, other indicators are off: Inverter is powered on and under self-
inspection, wait for enough light to fulfill grid-connected feed-in condition.
Run (left) LED:  Green indicator on, others off: The inverter is in power generation after self-inspection –
successful commissioning.
“Warn” or “Fault” (middle and right, respectively) LED indicator is on or flickers: inverter is powered on, but system
fault occurred. Refer to section 7.3 to check the fault code in LCD display, stop the inverter as per section 6.3, and rule
out faults according to chapter 9. After all the faults are removed, repeat the operations in chapter 6.
Stopping Operation
When it is necessary to carry out power-off maintenance, inspection and fault elimination on the inverter, stop the
inverter according to the following steps:
1. Disconnect the breaker on inverter public grid AC side.
2. Disconnect the integrated DC switch of the inverter.

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3. Disconnect the breaker switch on PV string DC input side.
4. Wait for at least 5 minutes until the internal components of the inverter are fully discharged. The inverter has
now stopped operation.
Maintenance
In a solar PV grid-connected power generation system, PSW-G series grid-connected solar inverters can realize grid-
connected power generation and stop/start operations automatically day and night in all seasons. In order to
safeguard and prolong the service life of the inverter, it is necessary to carry out maintenance and inspection on the
inverter besides using the inverter strictly according to this manual.
Regular Maintenance
Task Method Maintenance Cycle
Store the
operation
data
Use real-time monitoring software to read inverter running data, regularly
back up all inverter running data and stats. Check the monitoring software
and inverter LCD screen to make sure the parameters are set correctly.
Once each quarter
Check
inverter
operation
status
Check to make sure the inverter installation is solid, no damage or
deformation. When inverter running, check to make sure the sound and
variables are normal. When inverter running, use thermal imager to check
whether the case cooling is normal.
Every six months
Clean the
inverter
Check the ambient humidity and dust around inverter, clean the inverter
when necessary. See Section “6.4 Maintenance”  “Cleaning”.
Every six months
Check
electrical
connection
Check whether system cable connection and inverter terminal block are
loosened, if yes, secure them again in the manner specified in section 4.
Check whether the cable is damaged, and whether the cable skin touched
by the metal surface is cut.
Every six months
Check and if
necessary,
replace
cooling fans
(only 8 ~ 10
kW models)
Observe whether the air inlet/outlet is normal. Check whether there are
cracks on the fan blades. Listen for abnormal noise during fan rotation. Clean
the air inlet/outlet if necessary. If any abnormality of the fan is detected,
replace the fan immediately. Refer to section “Fan Replacement” below.
Every six months
Check the
security
features
Check the inverter LCD and stop function of the system. Simulate stop
operation and check the stop signal communication. Check the warning
marks and replace them if necessary.
Every six months
Cleaning of Inverter Housing
The cleaning procedure is as follows:
1. Disconnect the input and output switches.
2. Wait ten minutes.
3. Use a soft brush or a vacuum cleaner to clean the surface and the inlet and outlet of the inverter.
4. Repeat Section “6.1 Inspection before Operation”.
5. Restart the inverter.
Cleaning the Fan
The cleaning procedure is as follows:
1. Disconnect the connection on input and output side.
2. Wait for ten minutes.
3. Disconnect the inverter and remove it from the mounting bracket by the same process as outlined in
sections 5.3 and 5.4, but in reverse order.