APC INROOM ACPSC3000 Operations Instructions Page 61
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InRoom CW/DX – Operating Instructions 61
9.1.6 Maintenance
Electrical Hazard:
1. Switch the cooling off unit at the Controller.
2. Tur n the main disconnect switch to the OFF position.
3. Check for voltage.
4. Begin work if no voltage is present.
The following work and checks can be carried out:
- Check steam hoses, condensate hoses, water hoses and other parts of the humidifi er for external effects
or wear.
- Flush out the water drain.
Replacing the steam cylinder
The steam cylinder needs replacing if the electrodes are so highly insulated due to the increasing calcifi cation
or furring that the water level in the steam cylinder constantly touches the sensor electrode.
The specially constructed water fi lling beaker provides additional safety. Excessive water is routed to an
overfl ow and then drained away from the unit.
Warning:
The temperature of the discharged water is approximately 60°C (140°F) during normal ope-
ration but can reach 100°C (210°F) briefl y, if the steam cylinder is emptied manually during
maintenance work.
The steam cylinder should be allowed to cool down slightly before removal.
The steam cylinder uses the alarm code 11x long on the humidifi er‘s printed circuit board in the electrical
section of the cooling unit. See Alarm table 2 on page 64 for details. If the alarm code 11x long occurs
repeatedly, the steam cylinder has worn out and must be replaced. The life of a steam cylinder depends on
the operating period and the hardness of the water.
Manual drainage
By means of a switch on the humidifi er
board, you can manually drain the
cylinder.
Put the switch into position "DR" to drain
the humidifi er.
After the drainage, the switch must be
reset to position "ON", or no humidifi -
cation can take place.
Position "ON" Position "DR"
Electrical Hazard:
Switch off the power supply circuits to the humidifi er before continuing the work.
Disconnect the electrical plug on the cylinder.
Release the hose clamp. Pull off the steam hose.
Unscrew the steam cylinder from the mount.
The new steam cylinder is installed in the reverse sequence. The humidifi er is re-started in accordance with
the recommendations of the chapter "9.1.4 Commissioning", which begins on page 56.
- Operating Instructions 1
- Contents 3
- 1. Safety 5
- 1.3 Safety instructions 6
- 1.4 Handling refrigerants 6
- First aid measures 7
- Repairs and modifi cations 7
- 2. Description 8
- K A X X X 9
- H X 3 X X 9
- Page code 9
- E / 1107 / 14 / 7 9
- Unit Variants 10
- Air fl ow (D) 11
- A-system 12
- G-system 12
- GE-system 12
- ACW-System 13
- GCW-System 13
- CW-System 13
- 2.2 Intended use 14
- Electronic expansion valve 15
- Dehumidifying circuit 15
- Safety features 15
- Component protection 16
- 3. Refrigerant circuit 17
- 3.1 Cooling system A 18
- 3.2 Cooling system G 19
- 3.3 Cooling system GE 20
- 3.4 Cooling system ACW 21
- 3.5 Cooling system GCW 22
- 3.6 Cooling system CW 23
- 4. Technical data 24
- Modell 211 311 25
- Modell 452 612 862 26
- Modell 452 612 28
- Modell 400 660 900 1100 1500 29
- 4.7 Dimensions 30
- 4.8 Weights 30
- 4.12 Dimensional drawings 33
- 5. Transport/Storage 34
- 6. Installation 35
- 6.3.2 Refrigerant Piping 37
- Overfi lling 42
- Underfi lling 42
- External water circuit 43
- PCW 1100 CW 46
- PCW 1500 CW 46
- PCW 900 D 46
- Bottom view 46
- Siphon installation 48
- 6.4 Electrical connection 49
- 7. Commissioning 51
- 8. Dismantling and disposal 53
- 9. Options 54
- 9.1.3 Supply connections 55
- 10.43 in 56
- 9.1.5 Operation 57
- 1 2 3 4 58
- 9.1.6 Maintenance 61
- Alarm list 63
- Table 2 - Alarms (continued) 64
- 9.2 Reheat 65
- 9.3 Raised fl oor stand 66
- For cabinet size 1 - 2 68
- For cabinet size 3 - 4 69
- For cabinet size 5 70
- 9.4 Air side connection 71
- 9.5 Waterside connection 72
- 9.6 Condensers 73
- SCS 120 SSA 74
- SCS 525 DSA - SCS 683 DSA 75
- SCS 192 SSA - SCS 312 SSA 75
- SCS 252 DSA - SCS 312 DSA 75
- 10. Maintenance 76
- 10.3 Refrigerant circuit 77
- 10.4 Air circuit 78
- 10.5 Water circuit 79
- 10.6 Unit in general 79
- 10.7 Competences 79
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