Lubrication Of The Antenna Pivot - RACOM RAy3 User Manual

4.3.1. Lubrication of the antenna pivot

Before fitting the RAy flange to the antenna pivot ensure the "O" ring (part No. 1) is in the correct position.
It is also essential to prevent moisture getting in between these two parts. This moisture could cause
oxidation, which would complicate disassembly of this mechanical coupling in the future. For this
reason, we need to lubricate these surfaces with the grease, which is supplied in the capsule marked
"SILOCONE GREASE". If you use a different grease for lubrication, then it should be a teflon or a silicone
grease.
Fig. 4.5: Grease points on the antenna pivot and RAy unit flange
Lubricate internal area of the flange on the RAy unit (2) and the "O" ring (1) with a thin even layer that
allows the pin to slide easily into the flange without damaging the "O" ring. The layer has to be really
thin and even to ensure no grease is pushed in to the waveguide. A little bit more grease may only be
applied in the area (3) beyond the "O" ring on the antenna pin to optimally fill the small gap (max. 0.1
mm) between the pin and the flange to prevent leakage of moisture and water into the unit. Installation
should be carried out according to the antenna installation instructions.
A tub of grease is supplied with each RAy unit.
Important
Lubrication is a very important assembly step for every RAy unit.
Failure to lubricate the unit can lead to operational and assembly
complications.
The layer of grease has to be really thin (especially on the surface
"No 2"), otherwise grease blocks the waveguide after the as-
sembly (and many decibels of the signal are lost).
© RACOM s.r.o. – RAy3 Microwave Link
Installation
Fig. 4.6: Silicone grease
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