Reflex Variomat VS 1, Руководство по эксплуатации, Страница: 59 / 68

Maintenance
Variomat 1 — 06.07.2016 – Rev. B English — 59
10.4 Checking switching points
Prerequisite for checking the switching points are the following correct settings:
• Minimum operating pressure P
0
, see chapter 7.2 "Determining the P
0
minimum operating pressure for the controller" on page 36 .
• Level sensor at the primary tank.
Preparation
1. Switch to Automatic mode.
2. Close the cap valves upstream of the tanks and the "EC" expansion lines.
3. Record the displayed filling level (value in %).
4. Drain the water from the tanks.
Checking the cut-in pressure
5. Check the cut-in and cut-out pressure of the "PU" pump.
– The pump cuts in at P
0
+ 0.3 bar.
– The pump cuts out at P
0
+ 0.5 bar.
Checking the Make-up "On"
6. If necessary, check the make-up value displayed at the controller.
– The automatic make-up is activated at a level display of 20 %.
Checking Insufficient water "On"
7. Switch off the make-up and continue to drain water from the tanks.
8. Check the displayed value for the "Insufficient water" filling level message.
– Insufficient water "On" is displayed at the controller at a minimum filling level of 5 %.
9. Switch to Stop mode.
10. Switch off the main switch.
Cleaning the tanks
If necessary, remove condensate from the tanks, see chapter 10.3 "Cleaning the tanks" on page 58 .