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Operation
8.5
Venting the pump
CAUTION
Risk of burns
Escaping hot medium can cause burns.
•
Maintain a sufficient distance from the escaping medium.
•
Wear suitable personal protective equipment (safety gloves and
goggles).
Vent the "PU" pump as follows:
1
Pump "PU"
2
"AV" venting screw
3
"ST" dirt trap
•
Remove the vent screw (2) from the pump (1) and vent the pump until
bubble-free water escapes.
•
Screw the vent screw (2) back in and tighten.
•
Check the vent screw (2) for leaks.
Note!
Repeat the venting if the pump delivery rate is zero.
8.6
Parametrising the controller in the Customer menu
Use the Customer menu to display or correct system-specific values. In the
course of commissioning, the factory settings must be adjusted for the system-
specific conditions.
For adjusting the default settings, 10.3 "Configuring settings in the
–
controller", 44.
–
For information about controller operation, 10.1 "Operator panel", 43.
8.7
Starting Automatic mode
Automatic mode can be started as soon as the system is filled with water and the
gases contained have been vented.
• Press button "AUTO".
–
During commissioning, continuous degassing is automatically
activated to remove any residual free or dissolved gases from the
system. This time can be set in the Customer menu as required by the
system conditions. The default setting is 12 hours. Subsequent to the
continuous degassing, the device automatically switches to interval
degassing.
Note!
The commissioning process is now concluded.
Notice!
The "ST" dirt trap in the "DC" degassing line must be cleaned after the
expiry of the continuous degassing time at the latest, 11.1.1
"Cleaning the dirt trap", 48.
42 — English
9
Operation
9.1.1
Automatic mode
Use:
After initial commissioning has been successfully completed
Start:
Press "AUTO".
Functions:
•
Automatic mode is suitable for continuous device operation and the
controller monitors the following functions:
–
–
–
–
•
The "PU" pump and the "PV1" motor ball valve of the overflow line are
regulated by the controller so that the pressure that is being regulated
remains constant to within ± 0.2 bar.
•
Faults are indicated and evaluated in the display.
• The "PV1" motor ball valve of the overflow line remains open during the
adjustable degassing time as long as the pump "PU" continues to run.
• In the de-pressurised "VG" primary vessel, the system water is expanded and in
this way degassed.
•
For Automatic mode, you can set various degassing programmes in the
Customer menu, 10.3.1 "Customer menu", 44. The controller display
supplies the necessary information.
Continuous degassing
After commissioning and repairs to the connected system, select the continuous
degassing program.
The device will continuously degas for a set period of time. Free and dissolved
gases are quickly removed.
•
Automatic start after execution of the start routine during commissioning.
•
Activated from the Customer menu.
•
The degassing time can be set in the Customer menu, dependent on the
actual system.
–
Interval degassing
For continuous operation, select the interval degassing program. As the default it
is set in the Customer menu.
Degassing is continuous during an interval. An idling time follows an interval.
The interval degassing mode can be limited to an adjustable time period. Time
settings can be made in the Service menu.
•
Automatic activation upon expiry of continuous degassing.
•
Degassing interval (default 90 s)
•
Break time (default: 120 min)
•
Start / end (8:00 a.m. - 6:00 p.m.)
9.1.2
Manual mode
Use:
For testing and maintenance tasks.
Start:
1.
Press "Manual mode".
2.
Select the desired function.
Functions:
Manual mode allows you to select the following functions and to perform a test
run:
•
"PU" pump.
•
"Motor ball valve in the "PV1" overflow line.
•
The solenoid valve "WV1" for makeup.
You have the option to simultaneously switch multiple functions and to test
them in parallel. Switch the function on and off by touching the corresponding
button:
Variomat Touch — 09.09.2022-Rev. C
Pressurisation
Expansion volume compensation
Degassing
Automatic make-up.
The default setting is 12 hours. After expiry of the set time, the device
automatically switches to interval degassing.
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