Maintenance
24
—
English
Servimat M/L — 28.01.2021
11.
Vent the "PU“ pump, see chapter
7.3 "Filling the device with water and
12. Switch to Automatic mode.
The dirt trap has been cleaned.
Note!
Clean all other installed dirt traps (in the Fillset, for example).
Note!
Perform a fine adjustment of the hydraulic compensator, if the dirt traps
are heavily soiled.
10.3.2
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 tank and the secondary tanks from sludge deposits.
1.
Switch to Stop mode.
2.
Empty the tanks.
–
Open the "FD" feed and drain cocks and empty the tanks completely
from water.
3.
Remove the hose connection between the primary tank and the device and
the secondary tank, if provided.
4.
Remove the lower vessel covers from the tanks.
5.
Remove any sludge from the covers and the spaces between the
diaphragms and the tanks.
•
Check the diaphragms for tearing.
•
Check the tank interior walls for corrosion.
6.
Reinstall the covers on the tanks.
7.
Reinstall the flange connection betweens the primary tank and the device
and the secondary tank, if provided.
8.
Close the "FD" feed and drain cocks at the tanks.
9.
Use the "FD" feed and drain cock to fill the primary tank with water, see
chapter 7.5 "Filling the tanks with water" on page 15 .
10. Switch to Automatic mode.
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
minimum operating pressure for the controller" on page 13 .
•
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 10.3.2 "Cleaning the
tanks" on page 24 .
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, see chapter 9.3.3 "Default
settings" on page 19 .
10.5
Maintenance certificate
All maintenance tasks have been completed according to the Reflex Installation,
Operating and Maintenance Manual.
Date
Service organisation
Signature
Remarks
