User Manual

4. Commissioning
MF0150A9A Manual for ION-M23 SDARS
Page 23
4.1.5. Mounting of Fan Protection for RUs with active cooling
Since the fan protection is required for the outdoor usage of a stand-alone Remote
Unit with active cooling, the mounting of this optional equipment is also described in
this manual.
• To install the protective cover of the fan protection kit, first unscrew the four
screws with the respective lock washers from the cover of the air inlet of the
Remote Unit, and instead, screw in the four spacing bolts M4.0x30 with the four
lock washers M4.0 DIN125 that are part of the fan protection kit.
• Place the protective cover into the right position by fitting its four bore holes over
the spacing bolts and fasten it using the original lock washers and screws of the
Remote Unit. (These lock washers and screws are also part of the fan protection
kit and can be used as spare parts in case of loss.)
figure 4-4 Mounting procedure for fan protection, (metric dimensions)
→ This figure shows the long version of the RU. For dimensions of the short
version, see Mechanical Specifications in chapter 7.2.3 or figure 7 3.