Fig. 26 Secondary Refrigerant System - GEA RedGenium Operating Instruction

Fig.26:
2000
2040
2045
2050
•
L_151511_2
19.12.2019
The flow switch can only be installed in a horizontal pipe, or a vertical pipe
with a flow running in an upward direction. The flow switch must be installed
in a distance of 5 to 10 times of pipe diameter behind the previously flowed
curve or valve. The outlet run must equal 3 to 5 times the pipe diameter.
If an electronic flow sensor is installed in a horizontal pipe, this must be car-
ried out laterally. In the case of installation from above, the pipe to be moni-
tored must be completely filled. In the case of installation from below, contam-
inant deposits will falsify the measurement.
Between the secondary refrigerant outlet from the evaporator and the temper-
ature sensor item 2040 there should be at least 2 m of pipeline and two 90°
changes of direction installed via pipe elbows or fittings. If the temperature
sensor item 2040 is installed immediately downstream of the flow switch item
2050, then a clearance of 5 to 10 times the pipe diameter must be allowed for.
The cabling of the temperature sensor and flow monitor must be carried out
with an additional cable length of 6 m measured from the outlet point of the
chiller.
Secondary refrigerant system
Evaporator/liquid separator
Resistance thermometer - secondary refrigerant outlet temperature
Resistance thermometer - secondary refrigerant inlet temperature
Flow monitor
Heating agent system
The size and position of the water connections for the condenser, oil cooler
and subcooler (optional) are indicated in the drawing contained in the order
documentation.
Install the heat exchangers on the pressure side of the pump.
Arrange a dirt collector immediately upstream of the heat exchanger (recom-
mended mesh size ≤ 0.9 mm).
Temperature controllers to measure the cooling medium inlet temperature
(item 2145) or outlet temperature (item 2140) as well as the flow switch (item
2050) must be installed with the loosely supplied welded sleeves, as well as
the secondary refrigerant sensors on the evaporator side.
Check the water quality.
Start-up
Basic and further steps
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