'操作说明 Hotflow THREE_26_zh.pdf - 第495页
7. COMMISSIONING ENGLISH Translation of the original 38 451820.66.03_EN 2020-05-05
Translation of the original ENGLISH 7. COMMISSIONING
451820.66.03_EN
2020-05-05
37
Checking the expansion vessel
Tasks to be carried out:
7.2 Refrigerant circuit
Tasks to be carried out:
The cooling aggregate is ready for operation and the control and operating unit takes over regulation
of the outlet temperature.
Check the setpoint value setting and amend if necessary.
Please contact our hotline if you have any further questions.
1. Switch off the system
2. Close the cap valve
3. Drain the water seal on the bleeder valve of the cap valve
4. Measure the primary pressure p
0
of the vessel using an air pressure gauge
5. Top up nitrogen if necessary
6. Open the cap valve again
7. Refill the water seal
8. Switch the system back on
9. Heat up the system to maximum flow temperature
10. Check the final pressure
1. Once work is complete on the water circuit, the covering panels must be attached
2. Switch off the main switch and move the motor protection switches on the compressors
and fans to position -1- (see circuit diagram)
3. Close and lock the control cabinet door
4. Switch on the main switch
5. Acknowledge all pending fault messages in the control and operating unit
7. COMMISSIONING ENGLISH Translation of the original
38
451820.66.03_EN
2020-05-05
Translation of the original ENGLISH 8. DECOMMISSIONING/SHUTDOWN
451820.66.03_EN
2020-05-05
39
8. DECOMMISSIONING/SHUTDOWN
Follow the safety notes in chapter 1!
• Disconnect the cooling unit from the power supply
• Completely drain the water circuit, including pipework, evaporator, pump(s),
water filter and tank(s)
(See RI flow diagram in technical section)
In the case of transport after operation with water, we recommend rinsing the cooling unit
with a water-glycol mixture of 60% : 40% after draining!
Tasks to be carried out:
1. De-energise the cooling block and disconnect the power supply
2. Disconnect the device from the application on the water side (this results in venting of the
cooling block)
3. Completely drain the water circuit; in the case of height differences in the inlet line to the
evaporator, the water must be pushed out with compressed air
4. Completely drain the tank via the drain cock, then clean and rinse
5. Completely drain the pump(s) via the purging hole (ensure that pump(s) are vented)
6. Check, if required remove remaining water
7. Close device connections
8. Protect the cooling block against dust
9. Package for transportation, if required
10. Water containing additives must be disposed of in consultation with the responsible authorities
at regional level