
3
Control panel
3.1
General
Control panel
General description
The electronic regulator automatically controls the dryer, i.e.:
• keeps the pressure dew-point stable
• stops the dryer whenever necessary
• restarts the dryer when required
In order to control the dryer and to read and modify programmable parameters, the
regulator has a control panel provided with:
• LEDs indicating the status of the dryer
• a display indicating the operating conditions or a fault
• keys to control the dryer and to access the data collected by the regulator
• buttons to manually start and stop the dryer
In general, the regulator has following functions:
• controlling the dryer
• protecting the dryer
• automatic restart after voltage failure (made inactive)
Controlling the dryer
The regulator keeps the pressure dew-point stable at no load by opening or closing the solenoid
valve of the hot-gas by-pass.
In order to keep the condenser pressure constant:
• For air-cooled versions, the regulator starts and stops the fan motor(s) as necessary.
• For water-cooled versions, the water regulating valve regulates the cooling water flow.
Protecting the dryer
Shut-down
• In case the pressure in the refrigerant circuit is too high, the dryer will be stopped.
Instruction book
2920 1992 00
37
Содержание QED-1250
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Страница 6: ...8 2 AIR DRYER DATA 108 9 Pressure equipment directives 112 Instruction book 4 2920 1992 00 ...
Страница 15: ...Position of components Air cooled dryer Water cooled dryer Instruction book 2920 1992 00 13 ...
Страница 17: ...Connections Rear view of Air cooled dryer Instruction book 2920 1992 00 15 ...
Страница 31: ...Electrical diagram air cooled QED 1800 ES870 Instruction book 2920 1992 00 29 ...
Страница 32: ...Electrical diagram air cooled QED 2100 ES1010 Instruction book 30 2920 1992 00 ...
Страница 33: ...Electrical diagram water cooled QED 1250 ES610 and QED 1600 ES760 Instruction book 2920 1992 00 31 ...
Страница 34: ...Electrical diagram water cooled QED 1800 ES870 and QED 2100 ES1010 Instruction book 32 2920 1992 00 ...
Страница 36: ...Electric cubicle air cooled QED 2100 ES1010 380 V and 460 V Instruction book 34 2920 1992 00 ...
Страница 86: ...Dimension drawing air cooled QED 1600 ES760 Instruction book 84 2920 1992 00 ...
Страница 87: ...Dimension drawing air cooled QED 1800 ES870 Instruction book 2920 1992 00 85 ...
Страница 88: ...Dimension drawing air cooled QED 2100 ES1010 Instruction book 86 2920 1992 00 ...
Страница 89: ...Dimension drawing water cooled QED 1250 ES610 Instruction book 2920 1992 00 87 ...
Страница 90: ...Dimension drawing water cooled QED 1600 ES760 Instruction book 88 2920 1992 00 ...
Страница 91: ...Dimension drawing water cooled QED 1800 ES870 Instruction book 2920 1992 00 89 ...
Страница 94: ...4 2 Installation proposal Example Installation proposal air cooled dryer Instruction book 92 2920 1992 00 ...
Страница 95: ...Installation proposal water cooled dryer Instruction book 2920 1992 00 93 ...
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