2 Safety
CAUTION
Risk of burns due to hot enclosure parts
The enclosure and the enclosure lid may get hot
during operation. The DC load-break switch can
not become hot.
• Do not touch hot surfaces.
• Wait until the inverter has cooled down
before touching the enclosure or enclosure
lid.
CAUTION
Risk of injury due to weight of product
Injuries may result if the product is lifted incorrectly
or dropped while being transported or mounted.
• Carry and lift the product upright with the
help of several people. Take the weight and
the center of gravity of the product into
account. The center of gravity is on the side
of the AC-Connection Unit.
• Wear suitable personal protective equipment
for all work on the product.
• Transport the product using the carrying
handles or hoist. Take the weight of the
product into account.
• Use all carrying handles provided during
transport with carrying handles.
• Do not use the carrying handles as
attachment points for hoist equipment (e.g.
straps, ropes, chains). Insert eye bolts into
threads provided on top of the product to
attach the hoist system.
NOTICE
Damage to the enclosure seal in
subfreezing conditions
If you open the product when temperatures are
below freezing, the enclosure seals can be
damaged. Moisture can penetrate the product and
damage it.
• Only open the product if the ambient
temperature is not below -5°C.
• If a layer of ice has formed on the enclosure
seal when temperatures are below freezing,
remove it prior to opening the product (e.g.
by melting the ice with warm air).
6
STP50-40-IS-xx-20
SMA Solar Technology AG
NOTICE
Damage to the product due to sand,
dust and moisture ingress
Sand, dust and moisture penetration can damage
the product and impair its functionality.
• Only open the product if the humidity is
within the thresholds and the environment is
free of sand and dust.
• Do not open the product during a dust storm
or precipitation.
• Close tightly all enclosure openings.
NOTICE
Damage to the inverter due to
electrostatic discharge
Touching electronic components can cause
damage to or destroy the inverter through
electrostatic discharge.
• Ground yourself before touching any
component.
NOTICE
High costs due to inappropriate Internet
tariff
Depending on use, the data volume of the product
transferred via the Internet may vary in size. The
data volume depends, for example, on the number
of devices in the system, the frequency of device
updates, the frequency of data transfer to
Sunny Portal or the use of FTP push. High costs for
the Internet connection can be the result.
• SMA Solar Technology AG recommends
using an Internet flat rate.
NOTICE
Damage to the product due to cleaning
agents
The use of cleaning agents may cause damage to
the product and its components.
• Clean the product and all its components
only with a cloth moistened with clear water.
Quick Reference Guide