Watson-Marlow qdos 20, Инструкция по эксплуатации

Страница: 70 / 235

12.3.2 First time pumphead installation: (qdos ReNu 20, 60, 120
and qdos CWT all models variants)
A qdos 20, 60 or 120 requires the pumphead pressure valve to be set to the in use position, prior to the installation
of the pumphead. This is not a feature of CWT pumpheads, and this section may be skipped for CWT models.
12.3.2.1 ReNu 20, ReNu 60 or ReNu 120 Leak Detector Set-up
A qdos 20, 60 and 120 have a pressure valve in the pumphead, as illustrated in the image below.
Before installation of the pumphead, you must set the pressure valve in the pumphead, to ensure the leak
detector will function correctly at all process pressures. Follow the procedure below.
Procedure
1. Turn pressure valve anti clockwise, from the transportation setting (
) to the ‘in-use’ position ( )
!
WARNING
If the pumphead pressure valve is not set to the in use position on a qdos 20, 60 or 120
pumphead, the leak detection will not function when process pressures are less than 1 bar.
This could result in fluid leaks of the pumped fluid, from the pumphead going undetected.
Turn the pressure valve to the in use position prior to pumphead installation.
12 INSTALLATION: PART 3 (FLUID PATH) 70