Reflex Variomat Touch VS 2-1 35 Manual De Instrucciones Original página 48

Maintenance
Activity
Check the make-up switching points.
–  11.2 "Checking switching points",
 48.
Check the Automatic mode switching
points.
 11.2 "Checking switching points",
–
 48.
11.1.1 Cleaning the dirt trap
CAUTION
Risk of injury due to pressurised liquid
If installation, removal or maintenance work is not carried out correctly, there
is a risk of burns and other injuries at the connection points, if pressurised
hot water or hot steam suddenly escapes.
• Ensure proper installation, removal or maintenance work.
• Ensure that the system is de-pressurised before performing installation,
removal or maintenance work at the connection points.
The "ST" dirt trap must be cleaned after the expiry of the continuous degassing
time at the latest. An inspection is also required after longer lasting operation.
1 "ST" dirt trap
1. Switch to Stop mode.
2. Close the ball vales upstream of the "ST" dirt trap (1) and the primary
vessel.
3. Slowly unscrew the dirt trap insert (2) from the dirt trap in order for the
residual pressure to escape from the pipeline segment.
4. Pull the mesh from the dirt trap insert and rinse it with clear water. Use a
soft brush for cleaning.
5. Re-insert the mesh into the dirt trap insert, check the gasket for damage,
and screw the dirt trap insert back into the housing of the "ST" (1) dirt trap.
6. Open the ball valve upstream of the "ST" dirt trap (1) and ball valve to the
primary vessel.
7. Vent the "PU" pump,  8.5 "Venting the pump",  42.
8. Switch to Automatic mode.
 Note!
Clean all other installed dirt traps (in the Fillset, for example).
11.1.2 Cleaning the tanks
CAUTION
Risk of injury due to pressurised liquid
If installation, removal or maintenance work is not carried out correctly, there
is a risk of burns and other injuries at the connection points, if pressurised
hot water or hot steam suddenly escapes.
• Ensure proper installation, removal or maintenance work.
• Ensure that the system is de-pressurised before performing installation,
removal or maintenance work at the connection points.
Clean the primary vessel and the secondary vessels from sludge deposits.
1. Switch to Stop mode.
2. Empty the vessels.
– Open the "FD" feed and drain valves and drain the vessels completely
of water.
3. Remove the hose connection between the primary vessel and the device
and the secondary vessel, if provided.
48 — English
Interval
x Annually
x Annually
2 Dirt trap insert
Variomat Touch — 09.09.2022-Rev. C
4. Remove the lower vessel covers from the vessels.
5. Remove any sludge from the covers and the spaces between the
diaphragms and the vessels.
– Check the membranes for tearing.
– Check the vessel interior walls for corrosion damage.
6. Fit the covers on the vessels.
7. Fit the pipe connections between from the primary vessel to the device
and to the secondary vessel.
8. Close the "FD" feed and drain valves at the vessels.
9. Use the "FD" feed and drain valve to fill the primary vessel with water,
 8.4 "Filling the tanks with water",  41.
10. Switch to Automatic mode.
11.2 Checking switching points
Prerequisite for checking the switching points are the following correct settings:
• Minimum operating pressure P
• 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 + 0.3 bar.
0
– The pump cuts out at P
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,  11.1.2 "Cleaning the tanks",
 48.
Activating the device
11. Switch on the main switch.
12. Activate the make-up.
13. Switch to Automatic mode.
– Depending on the filling level and pressure, the "PU" pump and the
automatic make-up will be switched on.
14. Slowly open the cap valves upstream of the tanks and secure them against
unintended closing.
Checking Insufficient water "Off"
15. Check the displayed value for the Insufficient water "OFF" filling level
message.
– Insufficient water "Off" is displayed at the controller at a minimum
filling level of 7 %.
Checking Make-up "Off"
16. If necessary, check the make-up value displayed at the controller.
– Automatic make-up is deactivated at a level display of 25 %.
Maintenance is completed.
 Note!
If automatic make-up is not connected, you must manually fill the tanks
with water to the recorded filling level.

Note!
The setting values for pressure maintenance, filling levels and make-up
are provided in the chapter Standard settings,  10.3.3 "Default
settings",  45.
,  8.2 "Variomat switching points",  40.
0
+ 0.5 bar.
0