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1. This Manual in Other Languages

For operators: maintenance

NOTE

Inspect and maintain your system to:

• Keep it safe and reliable

• Achieve top output

• Prevent damage and

• Protect your investment.

aleo solar recommends carrying out regular inspections

and maintenance so that any problems can be discovered

reliably, and rectified.

RECOMMENDATION

• aleo solar explicitly recommends annual inspections

and a more thorough inspection and measurement

every 4 years.

• We also recommend the use of a monitoring system

to identify any outages or problems quickly.

• Inspecting the output of your photovoltaic system

regularly can help to discover problems promptly,

and ensures your photovoltaic system operates at

top performance, preventing loss of output.

For the proper maintenance and repair of your aleo solar

photovoltaic system, contact your aleo solar dealer or get

in touch with aleo solar directly (see Ch. 2.2: „Contact").

11.1

Inspections

aleo solar recommends an inspection every year. This

should be a visual inspection. Refer to Ch. 11.3: „Details

for the inspections".

The inspection includes the following aspects.

11.1.1 Inspecting the generator

• Strings: condition of the insulation and mounting

• Condition of the junction box

• Condition of the visible connectors

• Condition of the earthing conductors

• for direct earthing: connection of the earthing

conductors on the frames

• for indirect earthing: connection of the frames to

the sub-structure and the earthing conductors to

the sub-structure

• Condition of the mounting system (in peripheral

area)

• Dirt on modules: type and degree of dirt

• Shade circumstances (e.g. from trees or

neighbouring houses)

Clean the components, if necessary.

Page 16/19

11.1.2 Inspecting the documentation and drawings

• Checking the module string plan

• Check the inverter's status reports

• Determine and archive the annual output

• Create and archive the inspection report.

11.2

Review

aleo solar recommends carrying out a thorough review at

least every 4 years. This includes the following work in

addition to the inspection:

• Measure the characteristics of individual strings

(MPP current I

MPP

output P

);

MPP

• Measure the insulation resistance R

• Evaluate the annual power output and compare the

data with earlier readings;

• Create and archive a review report.

Check, repair or replace components, if required. Refer to

Ch. 11.3: „Details for the inspections".

11.3

Details for the inspections

11.3.1 Mechanical inspection

■

Safety precautions

Refer to the notes in Ch. 6.2.2: „Mechanical safety precau-

tions".

■

Work steps

During the inspection, check that the mechanical connec-

tions are clean, securely fitted and properly intact.

11.3.2 Electrical inspection

■

Safety precautions

Make sure you refer to the notes in Ch. 6.2.1: „Electrical

safety precautions".

■

Work steps

During the inspection, check that the electrical connec-

tions are clean, securely fitted and properly intact.

Identify any defects or irregularities in the electrical instal-

lation and make a record of them. Then rectify the problem

as quickly as possible.

11.4

Cleaning

Depending on the ambient conditions, modules are likely to

get soiled more or less heavily over time. This can cause

reduced output.

Suggestion for external inspectors: perform a spot check to ensure that the

module string plan matches the installation.

According to the standard IEC 61215, a photovoltaic module should have an insulation

resistance of at least 40 M! • m

Some inverters provide the measured insulation resistance via an interface.

aleo solar GmbH | Marius-Eriksen-Straße 1 | 17291 Prenzlau | Germany | [email protected]

, open-circuit voltage U

;

Quick Reference Manual Rel. 4.2, 08/2015, en-GB-DE (1)

, power