Lauda P 10, Руководство по эксплуатации

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In air-cooled mode, the device is cooled with air, whereby the fan draws
in fresh air through the front of the device. The fresh air heats up inside
the device and is discharged at the sides and back of the device.

In water-cooled mode, the heat is discharged via the cooling water
circuit. On the standard version of the device, the cooling water volume
is unregulated, but can be controlled by adding the accessory "cooling
water valve” (on/off).

The fan on the air-cooled condenser must also operate at a low speed
for the compressor to cool.
The cooling water must be a minimum of 5 - 10 K cooler than the
ambient temperature of the device to ensure efficient cooling.
3.3.4 Nitrogen overlay
This section is relevant for device RP 290 E.
The nitrogen overlay ...

is guided directly over the surface of the heat transfer liquid in the circu-
lation thermostats. The nitrogen flows out through the device overflow.

reduces the condensation of moisture in the heat transfer liquid.

reduces oxidation of the heat transfer liquid.

increases the service life of the heat transfer liquid.

decreases the flammability of combustible heat transfer liquids.
Please note:

An overflow hose with collecting vessel must be connected to the over-
flow of the circulation thermostat, see
Ä
Chapter 4.8.2 “Connecting an
external consuming unit” on page 54.
An excessive nitrogen flow rate may cause heat transfer liquid to be
drawn through the circulation thermostat overflow.

The nitrogen overlay must not be used in closed rooms. The operating
areas must be well ventilated. Alternatively, use an extraction system.

Ignition sources must be avoided at the filling opening and overflow if
heat transfer liquids are operated near their flash point temperature.
Push-in connection on the rear of the device that can be operated without
tools, compatible with 6 mm pneumatic hoses (Teflon, PE), LAUDA Article
No. RKJ 048. The push-in connection is automatically closed when the hose
is not inserted.
Installation: Simply insert the hose into the connection.
Removal: Push the blue ring and then simply pull out the hose.
A gas dosing device is required to adjust the nitrogen flow rate. The dosing
device is not included in the delivery. A pressure reducer with outflow tap
can be used as a dosing device, for example.

A nitrogen flow rate of 0.5 – 5 liters per hour is recommended.
Connection
Fig. 8: Nitrogen connection (N
2
)
Adjusting the flow rate
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