Watson-Marlow qdos 20, Инструкция по эксплуатации

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12.4.4 Step 4: Connect the pumphead safety overflow
The safety overflow of all pumphead models is a hose barb as illustrated by the image below :
In the unlikely event of a leak detection sensor failure, the safety overflow provides a safe leak path for mixture of
fluid and lubricant.
Do not block safety overflow of ReNu/CWT pumphead.
Do not fit a valve to the ReNu/CWT pumphead.
The safety overflow must be allowed to flow away from the pump into a system which is designed such that it is:
l
vented
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where no back flow can occur, due to pressure or a blockage
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of sufficient capacity
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where it is obvious to the user that fluid can be seen to be flowing in the event of a safety overflow
event
12 INSTALLATION: PART 3 (FLUID PATH) 83