Condair Esco

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8 Trouble-shouting guide Error or malfunction and possible cause No steam is discharged from the distribution pipes • Actuator mounted incorrectly • Control or high-limit humidistat set too low • Defective control line between humidistat, controller and rotary control valve actuator • Defective or interrupted control line to safety devices (system interlock) • High-limit humidistat placed in wrong location • Ceramic rotary-disk control valve in closed position • Defective rotary control valve actuator or Ceramic rotary-disk control valve is jammed • Control voltage or pressure loss Malfunctioning steam supply • Shut off valve in steam supply pipe closed (Check manometer) • Steam supply pipe clogged by dirt • Safety shut off valve closed Ceramic rotary-disk control valve is not closing, excessive humidification • Actuator mounted incorrectly • Humidistat defective or improperly set • Defective controller • Defective rotary control valve actuator (voltage available) • Ceramic rotary-disk control valve is jammed • Pressure spring has lost its resilience • Loss of control voltage; actuator (without emergency function) does not close valve Water is discharged from the steam distribution pipes • Steam supply pipe not insulated • Steam supply pipe not properly drained • Steam supply pipe connected incorrectly to the main pipe (bottom or side instead of on top) • Incorrect primary pressure resulting in incorrect secondary pressure after the valve (p2 > 0.15 bar) or improperly dimensioned ceramic rotary-disk control valve • Oversupplied or overstressed steam generator (water is forced along) • Malfunctioning steam distribution pipe drainage (clogged or defective condensate drain) • Excessive back pressure in condensate drain pipe (secondary condensate drained under pressure) • Primary and secondary condensate drains are joined together • Condensate line is routed too high (static back pressure) • Main distribution pipe is not installed horizontally
9 Vaporisation / condensation 9.1 Terminology and definitions • Vaporisation Vaporisation is understood to be the transition of a liquid into the gaseous stage upon reaching the substance’s boiling point. The onset of the boiling process depends on the following parameters: • Steam pressure of the liquid • Ambient pressure • Temperature • Substance • Saturated vapour pressure The saturated vapour pressure is that value, which is characterised by the balance between the ambient pressure and the vapour pressure of a liquid. Once the equilibrium is reached, vaporisation of the liquid takes place; this is called saturated steam. The steam pressure of a liquid is temperature-dependent so that the pressure equilibrium, at which evaporation begins, is characterised for each substance by a temperature pressure curve. This curve is called saturated steam curve. • Saturated steam Steam that reaches the saturated steam pressure but is not separated from the liquid phase, interacts with the liquid, i.e. the amount of water that vaporises equals the amount of steam that condenses. Steam, in such an interactive state, is called saturated steam. Most important characteristic: Saturated steam is not compressible (a part of it would condense in the process). • Wet steam When saturated steam cools down (e.g. by heat loss) part of it condenses, and the share of water droplets in the steam increases. This is called wet steam. • Superheated steam Steam, which is separated from the liquid and heated up, is called superheated steam. Most important characteristic: Superheated steam is compressible.
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Esco Steam humidification system TE
Page 5 and 6:
Contents 1 Important notes 6 1.1 Co
Page 7 and 8: 1.2 Safety instructions The followi
Page 9 and 10: 2 The Humidifier 2.1 Steam humidifi
Page 11 and 12: Steam distribution pipes DL 0-Esco
Page 13 and 14: 2.3 System Condair Esco 10, 20 and
Page 15 and 16: 2.5 Connection unit • Steam conne
Page 17 and 18: 3 Humidifier selection 3.1 The esse
Page 19 and 20: 3.2 Connection unit and ceramic rot
Page 21 and 22: Electric rotary control valve actua
Page 23 and 24: Accessory: Pneumatic positioner XSP
Page 25 and 26: 3.4.1 Type DR 73 Example-type DR 73
Page 27 and 28: 3.4.2 Type DL 40 Example-type DL 0-
Page 29 and 30: 3.7 Condair Esco stainless steel Co
Page 31 and 32: The robust industrial Bourdon tube
Page 33 and 34: P-actuator Condair Esco stainless s
Page 35 and 36: 4.2 Installation instructions 40°
Page 37 and 38: Figure 2 Installation upstream of f
Page 39 and 40: Humidification distance B M [m] (Di
Page 41 and 42: 4.4 Installation in systems or duct
Page 43 and 44: 4.5 Dimension diagrams 4.5.1 Steam
Page 45 and 46: 4.6 Dimensions diagrams for install
Page 47 and 48: 4xø8.5 100 60 40 ø41 4xø9 120 70
Page 49 and 50: 4.7.2 Electric rotary actuator CA75
Page 51 and 52: Key: = Shut-off valve = Condensate
Page 53 and 54: 4 3 2 1 K 5 T 6 7 8 11 11 V 9 10 11
Page 55 and 56: 5.4 Connections to be prepared by c
Page 57: 7 Maintenance Immediately following
Page 61: 10 Work sheet DR 73 / DL 40 1 Posit
Page 64: CoNSulTiNg, SalES aND SERviCE: Solu
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Condair Esco

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