GEA RedGenium, Инструкция по эксплуатации, Страница: 109 / 118

Notice
Short-term shut-down
► If the product is shut down temporarily, the valves do not need to be op-
erated; they remain in their operating positions. If there is a possibility of the
temperature in the evaporator rising above the cooling water temperature,
the cooling water supply must be interrupted or the stop valve on the com-
pressor suction side must be closed.
► The stop valve on the suction side of the compressor must also be
closed if it is possible that the temperature in the evaporator could rise
above the ambient temperature of the system.
12.3.2 Shut-down for a period of >48 hours
Notice
Labelling obligation
► The obligation to label the plant as "Plant not in operation" must be ob-
served!
If the product is shut down for a longer period of (>48 hours), the following activi-
ties must be performed:
1. Switch off the compressor in accordance with the operating instructions for
the electrical switchgear.
2. Switch off all ancillary drives.
3. Switch off the main switch of the three-phase electric system. Removing the
main fuse.
4. Close the stop valve on the suction side and the pressure side (or lockable
check valves).
5. Shut off secondary refrigerant, heating agent or cooling water supply.
6. Block the manual stop valve of the refrigerant injection (if present)
7.
Ensure that the vent slits of the electric motors are covered under all circum-
stances !
®
The system has been taken out of service.
12.3.3 Measures during downtimes
Even though the product is under overpressure, check the moisture content of
the refrigerant and refrigerator oil in case it is shut down for more than half a
year. The moisture content must not differ substantially from the initial values.
12.3.4 Monthly measures during downtime
• Check that the product is constantly under overpressure. Check the product
for leak tightness using a leak detector.
• Run the oil pump (if present) for about 5 minutes.
• Manually rotate the compressor shaft (min. 10 rotations).
Decommissioning
Temporary decommissioning
L_151511_2
19.12.2019 109