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4 Maintenance and care
Risk of electric shock. Risk of fire and injury
from electric arc.
| Do not disconnect connections under load.
| Ensure sufficient protection against contact with live
parts.
| Only use insulated tools.
| Do not insert any electrically conducting parts into the
connectors.
| Never open the junction box.
| Make sure there is no tension in the cable when posi-
tioning and heed the specified minimum bend radius.
| Avoid large conductor loops.
3.3.3 Parallel and serial connection
Solar modules of the same type can be connected in parallel. The
solar modules in this series are fundamentally designed for series
connection.
Material damage due to connection errors.
| Only use solar modules of the same type and output for
parallel connection. Take measures for overcurrent pro-
tection (e.g. line fuse) if necessary. Never exceed the
specified reverse current loadability of the solar mod-
ules.
Maximum number of module strings that are allowed to
be switched in parallel:
current * 1.25) + 1)
| Make sure that only solar modules with the same am-
perage (I
) are interconnected for series connection
MPP
and make sure that the voltages of lines connected in
parallel are the same. Even at low temperatures, never
exceed the maximum permissible system voltage of the
solar modules.
Maximum number of modules that are allowed to be
switched in series:
(open circuit voltage * 1.25))
| Make sure that the number and connection of the solar
modules match the electrical values specified by the
devices connected to the photovoltaic system.
| Make sure that the polarity is correct.
3.3.4 Connecting solar module
On the rear of the solar module, there is a connection box with the
connection cables, the plug and the socket.
Connection cable length
Connection cable cross section
Allowable ambient temperature range for
cables
3.3.5 Earthing
The earthing requirements must be checked in accordance with the
applicable regulations and standards before work is started.
The positions of the earthing holes are shown in Fig. 3–1.
The earthing cable can be mounted on one of the holes in
the module frame.
Avoid contact corrosion when using different metals and
observe electro-chemical insulation rating.
Observe the applicable regulations.
3
2
(fuse rating / (short-circuit
21
(maximum system voltage /
1000
mm
2
mm
4
from
-40
°C
to
°C
+85
Installation manual
Example: Using a self-cutting stainless-steel screw
Fig. 3–2:
Guide self-cutting stainless-steel screw into earthing
hole
Use a suitable self-cutting stainless-steel screw
(Ø
mm dia., maximum length
6,3
suitable ring terminal end and a self-cutting stainless-
steel serrated lock washer (between ring terminal end
and module frame).
For systems in which inverters with transformers are used, the
minus pole of the solar generator must be grounded.
4
Maintenance and care
The solar modules are low-maintenance modules. However, Con-
ergy recommend that a visual inspection of the mechanical and
electrical connections be performed once a year to detect any dam-
age.
Dirt on the solar modules reduces the output and the yield. If the
solar modules are installed with an inclination angle of more than
15°, they will generally be adequately cleaned by the rain.
Damage to the solar module surface by
scratching or extreme differences in temper-
ature.
| Only use pH neutral liquid cleaner, even if there is ex-
cessive dirt build-up.
| Do not use cleaning agents with abrasive constituents.
| Only use cleaning solutions that are at roughly the same
temperature as the solar module surface.
| Wipe the solar module surface with water and a soft
cloth.
| Never attempt to rub or scratch off dirt particles.
5
Removal
Risk of electric shock.
| Do not touch any bare connection parts.
| Only use insulated tools.
1. Disconnect the inverter from the supply network on the AC side so
that the photovoltaic system has no load.
2. Disconnect the photovoltaic system from the inverter at the cut-off
point on the DC side.
3. Make sure that the system is not supplied with voltage.
4. Remove the photovoltaic system in the same way as it was in-
stalled; observe the safety instructions.
6
Disposal
Do not dispose of old or defective solar modules with normal house-
hold waste.
Please ask your installer, dealer or Conergy
Conergy
PowerPlus 240-260P
mm) together with a
20
about disposal.
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