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Verfügbare Sprachen
Verfügbare Sprachen
Commissioning
8.1
Checking the requirements for commissioning
The device will be ready for commissioning when the tasks described in the
"Installation" chapter have been completed. The system designer or an assigned
expert is responsible for carrying out the commissioning. Commission the
storage tank according to the information in the corresponding installation
manual. Note the following information on commissioning:
•
The control unit is connected to the primary tank and the secondary tanks,
if provided.
•
The water connections of the tanks to the facility system are established.
•
The tanks are not filled with water.
•
The valves for emptying the tanks are open.
•
The facility system is filled with water and gas-vented.
•
The electrical connection has been created according to applicable
national and local regulations.
8.2
Variomat switching points
The "P
" minimum operating pressure is determined by the location of the
0
pressurisation. The controller calculates the switching points for the solenoid
valve "PV" and the pump "PU" from the "P
The "P
" minimum operating pressure is calculated as follows:
0
P
= P
+ P
+ 0.2 bar*
Enter the calculated value in the start routine
0
st
D
of the controller, 8.3 "Modifying the
controller's start routine", 40.
P
= h
/10
h
st
st
st
P
= 0.0 bar
for safety temperatures ≤ 100 °C
D
P
= 0.5 bar
for safety temperatures = 110 °C
D
*Addition of 0.2 bar recommended, no addition in extreme cases
Note!
Avoid dropping below the "P
vaporisation and cavitation are thus excluded.
8.3
Modifying the controller's start routine
Note!
For handling the operator panel 10.1 "Operator panel", 43
40 — English
" minimum operating pressure.
0
in metres
"minimum operating pressure. Vacuum,
0
Variomat 140 — 25.09.2020 - Rev. A
The start routine is used to set the parameters for device commissioning. It
commences with the first switching on of the controller and can only be set
once. The following parameter changes or checks are carried out from the
customer menu, 10.3.1 "Customer menu", 43.
A three-digit PM code is assigned to the setting options.
Step
PM Code
Description
1
Start of the start routine
2
001
Select the language
3
Remember: Prior to installation and commissioning,
read the operating manual!
4
005
Set the minimum operating pressure P
"Variomat switching points", 40.
5
002
Set the time
6
003
Set the date
7
121
Select the primary vessel nominal volume
8
Null balancing: The primary vessel must be empty!
The system checks whether the signal from the level
sensor matches the selected primary vessel
9
End of the start routine. The stop mode is active.
The system automatically displays the first page of the start routine when you
switch on the device for the first time:
1.
Press "OK".
–
The start routine moves to the next page.
2.
Select the required language and conform your entry with "OK".
3.
Prior to commissioning, read the operating manual in full and check for
proper assembly.
4.
Select the calculated minimum operating pressure and conform with "OK".
For calculation of the minimum operating pressure, 8.2 "Variomat
–
switching points", 40.
, 8.2
O
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