The use of residential solar installation tools

Residential Solar Installation Tool Usage Guide

First, basic tools and usage methods

Screwdriver and Wrench

Usage: It is used to tighten or loosen the screws and bolts of the component frame, bracket connection parts and inverter housing.

Key points for use

Select the matching screwdriver according to the type of screw head (such as cross, flat-head, hex socket).

The opening size of the wrench should be adjusted according to the specification of the bolt to avoid thread slippage or damage to the bolt.

When operating, keep the tool perpendicular to the screw/bolt, apply force evenly, and avoid tilting which may cause stripped threads.

Electric drill

Usage: Drill holes on the roof to install brackets or fix expansion bolts.

Key points for use

Select the appropriate drill bit (such as impact drill bit, twist drill bit) based on the roof material (such as concrete, metal).

Before drilling, the position should be marked to ensure the accuracy of the hole position.

When drilling, keep the electric drill stable, control the feed rate, and avoid overheating or breaking the drill bit.

After the drilling is completed, the debris in the hole should be cleared to ensure that the expansion bolts are installed firmly.

Wire strippers and wire crimping pliers

Usage: Handling cable connections, stripping the insulation layer and crimping terminals.

Key points for use

The depth of the blade of the wire stripper should be adjusted according to the cable specification to avoid damaging the wire.

The crimping pliers should select crimping dies that match the terminals to ensure a firm crimping and good electrical conductivity.

After crimping, it is necessary to check whether the terminals are deformed or loose. If necessary, crimping them again.

Second, electrical tools and their usage methods

Multimeter

Application: Measure parameters such as voltage, current, and resistance, and test circuit connectivity.

Key points for use

Before measurement, the appropriate range should be selected according to the parameter type (such as DC voltage, AC current).

When measuring voltage, the test leads should be connected in parallel in the circuit; when measuring current, they should be connected in series in the circuit.

When measuring resistance, make sure the circuit is powered off to avoid damaging the multimeter.

After the measurement is completed, the gear should be adjusted to the highest voltage gear to avoid damaging the instrument due to misoperation.

Insulation resistance tester

Purpose: To test the insulation performance of cables, components and brackets to ensure electrical safety.

Key points for use

Before the test, all power supplies must be disconnected to ensure that the device under test has no voltage.

Connect the "L" terminal and the "E" terminal of the tester to the conductor and ground terminal of the device under test respectively.

Press the test button and read the insulation resistance value (usually ≥1MΩ).

After the test is completed, discharge is required to avoid the risk of electric shock.

Ground resistance tester

Purpose: To measure the resistance value of the grounding system to ensure lightning protection and electrical safety.

Key points for use

Before the test, the grounding electrode should be disconnected from the equipment under test to avoid interference.

Connect the "P" terminal and the "C" terminal of the tester to the auxiliary grounding electrode and the current electrode respectively.

Press the test button and read the grounding resistance value (usually ≤4Ω).

After the test is completed, the grounding electrode needs to be tidied up and the site restored.

Third, safety tools and their usage methods

Safety belts and safety ropes

Usage: To prevent falls during high-altitude operations and ensure personnel safety.

Key points for use

Safety belts should be hung high and used low, and the hooks must be firmly fixed to the roof load-bearing structure.

The safety rope should be connected to the safety belt and maintain a certain degree of relaxation to avoid excessive pulling.

Before starting work, it is necessary to check the wear and tear of the safety belt and safety rope to ensure there is no breakage or aging.

Insulating gloves and insulating shoes

Usage: Prevent electric shock and protect the safety of operators.

Key points for use

Insulating gloves need to be regularly tested for insulation performance to ensure there is no damage or leakage.

Insulating shoes must comply with electrical safety standards, and the soles should have anti-slip and insulating functions.

When operating, insulating gloves and insulating shoes must be worn throughout the process to avoid direct contact with live parts.

Anti-fall device

Usage: Automatically locks when the safety rope breaks or falls off to prevent falls.

Key points for use

The anti-fall device needs to be connected to the safety rope and fixed to the roof load-bearing structure.

Before starting the operation, it is necessary to check the locking function of the anti-fall device to ensure it is sensitive and reliable.

During the operation, it is necessary to avoid the anti-fall device coming into contact with sharp objects to prevent damage.

Fourth, auxiliary tools and their usage methods

Level and laser rangefinder

Purpose: Ensure that components and brackets are installed horizontally and vertically, and measure the roof dimensions.

Key points for use

The level should be placed on the surface of the bracket or component, adjusted to the center of the bubble to ensure it is level.

The laser rangefinder needs to be aligned with the target point, read the distance value, and ensure the installation position is accurate.

After the measurement is completed, the data should be recorded to facilitate subsequent installation and adjustment.

Sealant gun and waterproof tape

Usage: Seal the perforations on the roof to prevent water seepage.

Key points for use

The sealant gun should be equipped with a nozzle that matches the sealant to ensure uniform dispensing of the sealant.

Before applying the adhesive, the area around the perforation should be cleaned to ensure there is no dust or oil stains.

After applying the sealant, it should be smoothed out with a scraper to ensure that the sealant adheres closely to the roof surface.

Waterproof tape should be wound around the cable holes and covered with sealant to enhance the waterproof effect.

Marker pen and tape measure

Purpose: Mark the installation position and measure dimensions.

Key points for use

The marker pens should be painted with weather-resistant pigments to avoid fading due to rain.

When marking, it should be clear and accurate to facilitate subsequent installation.

Tape measures need to be calibrated regularly to ensure measurement accuracy.

Fifth, tool maintenance and upkeep

Regular inspection

After using the tools, the surface stains should be cleaned and the wear or damage should be checked.

The battery power and motor performance of power tools need to be checked to ensure normal operation.

Storage management

Tools should be stored separately to avoid damage or loss caused by mixed storage.

Sharp tools should be equipped with protective covers to prevent scratches on personnel or equipment.

Professional maintenance

When tools malfunction or get damaged, they should be sent to a professional repair point for inspection and repair to avoid further damage caused by self-disassembly.