Lauda IN 550 XT, Руководство по эксплуатации

Страница: 77 / 172

5.11 Set bypass
A constant flow of heat transfer liquid must be ensured, in order to protect
the constant temperature equipment from damage. In order to guarantee
this function even for applications where the flow is very low or interrupted,
the constant temperature equipment also has an internal bypass. The bypass
is set manually by means of an adjusting wheel for the respective pump
capacity level of the constant temperature equipment.
Personnel:
n
Operating personnel
1.
Open the

Modules

Through-flow control

Status menu on the
constant temperature equipment.
2. Select the Off option.

Through-flow control is deactivated; flow to the application is at
the maximum possible flow rate.
3. Open the bypass completely. To do this, turn the setting wheel up to
the stop.

The volume flow is distributed between the internal outflow to the
control valve of the through-flow controller and the return flow to
the constant temperature equipment.
4. Set the required pump capacity level on the constant temperature
equipment.
5.
In the

Through-flow control menu, compare the value of the flow
measured at the control valve with the adjusted set point:
n
Flow > Set point: Select a lower pump power level.
n
Flow < Set point: Close the bypass slowly with the adjusting wheel
until the flow reaches the adjusted set point. If this is not possible
even with the bypass closed, select a higher pump power level.

The bypass is set.
5.12 Switching on the through-flow control
WARNING!
Splashing heat transfer liquid
Eye damage

Always wear suitable safety glasses when working on the
device.
V4 Integral process thermostats with flow control unit 77 / 171