Schwing SP 1800-D, Оригинальная инструкция по эксплуатации

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2.5.6 Concreting in cold weather
Placing booms must not be used at temperatures of below minus
15 °C (+5 °F) except with the express approval of the manufacturer.
There is a danger of damage to the steel (brittle fracture) and the
seals throughout the system at such extreme minus temperatures.
In addition, such minus temperatures should be considered the realis‐
tic lower limit for concrete placement, as it is no longer possible to
prepare concrete such that it can achieve its strength without the use
of special additives.
2.6 Delivery line systems
2.6.1 Suitable delivery lines
Use only delivery lines, end hoses, couplings, etc. which are in per‐
fect condition and suitable for the delivery job and have been ap‐
proved by the machine manufacturer. Delivery lines are subject to
wear which varies according to the pressure and composition of the
concrete, the material from which the delivery line is made, etc.
If you are not responsible for the separate delivery lines, the permissi‐
ble operating pressures of these should be confirmed by the operat‐
ing company.
2.6.2 Securing delivery lines
Delivery lines, delivery hoses, end hoses and couplings must be se‐
curely fastened and secured to prevent spontaneous opening.
Safety Manual
Concrete delivery and placing machines
46
01/2018 Rev16 EN