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8009441/YN36/V3-0/2015-08| SICKOPERATING INSTRUCTIONS|GM35
Subject to change without notice
PROJECT PLANNING INFORMATION
3.3.4 Installation preparation for the purge air unit
1 Make brackets from steel pipes (e.g. 50 x 5) with flanges (e.g. FL 60 x 8 x 60) for the
four fixing points of the purge air unit ; bore M10 threads in the mounting holes.
2 Weld the brackets on as shown when using steel ducts.
3 For stone stacks, fit retainer plates to each steel pipe or use a different, suitable
mounting for the purge air unit.
Fig. 12: Fitting recommendation for purge air units (duct diameter not representative)
See
“Technical Data, Consumables and Spare Parts”, page 113 for the dimension drawing
for the purge air unit.
3.3.5 Duct insulation
▸ Refit the thermal duct insulation; reinforce the insulation when necessary.
Steel pipe 50 x 5
DIN 2391
Purge air unit fastening
50 mm protrusion for circular duct cross-section
Flange 60 x 8 60
DIN 174
CAUTION: Device failure due to high ambient temperatures
The SR-unit of the GM35 is designed for a maximum ambient temperature of
+55 °C. Radiant heat on the enclosure surface can, under certain
circumstances, lead to temperatures higher than the measured air
temperature.
▸ Therefore, design insulation and radiation shielding so that temperature
limits are reliably maintained.