Ersa HF3_20 操作说明.pdf - 第587页

2 0 94160 - englisch_BA 06. 07.2005 ENG LIS H Depending on the specific version, the process cooler is optionally equipped with a control switch, a remote control unit or a stand-by button (control On / OFF). See circuit…

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6. COMMISSIONING
The safety notices contained in Chapter 1 must be complied with !
At storage temperatures <0°C allow for a sufficient acclimatisation period before
turning on the unit (formation of condensation water). The process cooler is designed
exclusively for the cooling of water. Only water complying with the specification may
be used for filling the water circuits !
6.1 Water Circuit
7.1.1 Water Requirements
Only water of drinking water quality may be used.
Water quality:
- Electric conductivity: < 2500 µS at 20 °C
- Hydrogen concentrate: 7 ... 9 (pH-value) at 20 °C
- Chloride: < 250 mg/l
- Total hardness: < 30 °dH
- Colony count: < 100 ml at 22 °C
The following materials may be installed in the water circuit:
- Copper
- Stainless steel
- Brass
- Cast iron
- Plastic
Depending on the materials used in the cooler-remote water circuit (installation provided by the
customer), material incompatibilities could result in a corrosion hazard.
This must be specially taken into account where galvanised and aluminium materials are used.
When in doubt, consult competent specialist companies.
A water filter may have to be installed if there is a hazard of water contamination
during operation (see also Options).
6. Commissioning
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94160 - englisch_BA
06.07.2005
ENGLISH
Depending on the specific version, the process cooler is optionally equipped with a
control switch, a remote control unit or a stand-by button (control On / OFF).
See circuit diagram.
6.1.2 Commissioning of Single and Two-Circuit Systems
Activities to be performed:
Place power disconnect switch (main switch) to the „0“ position
Place all motor protecting switches, control switches and automatic circuit breakers to the „0“
position
Remove tank filler cap
Fill up tank with water up to the –MAX- mark on the filling level indicator
Vent pump(s) via the vent screw on the pump housing
Place circuit breakers and motor protecting switches for pump(s) and fan(s) to the „1“ position
(see circuit diagram)
Activation of the pump(s) via disconnect switch, control switch in „1“ position
Check pump(s) for proper direction of rotation (see arrow on drive motor)
In the event that the pump rotates in the wrong direction, disconnect the process
cooler from the mains power supply and reverse any 2 phases of the main power
cable.
Visually inspect entire water circuit for leaks
Check that the water level is within the permissible range by inspecting the water level indicator
and top up, if necessary
Mount tank filler cap
6. Commissioning
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ENGLISH
6.2 Refrigeration Circuit
After the activities on the water circuit have been completed, the motor protecting switches of
the compressors have to be placed to the -1- position (see circuit diagram in the appendix).
Acknowledge all fault messages that may be signalled on the control panel.
The process cooler is not operational, the control and operating unit takes over the control of
the water outlet temperature.
Check set-point settings and change, if necessary.
7. DECOMMISSIONING
The safety notices contained in Chapter 1 must be complied with !
Disconnect process cooler from power supply.
Completely drain water circuit, including tank, pump(s), pipes and filters
(see flow diagram of pipes and instruments in the appendix)
Take freeze protection measures (consult manufacturer)
8. SHUTDOWN IN EMERGENCIES
The safety notices contained in Chapter 1 must be complied with !
Turn power disconnect switch (main switch) on the process cooler to „off“
9. ENVIRONMENTAL REQUIREMENTS
When repairing or placing the process cooler out of service (decommissioning), the
environment-relevant requirements regarding recovery, reuse and disposal of fuels/oils and
components according to DIN EN 378 are to be complied.
The operator of the process cooler is responsible for the proper disposal of used fuels,
oils and system components.
The disposal of the water containing additives is to be effected in agreement with the
competent local authorities.
7. Decommissioning
8. Shutdown in Emergencies
9. Envirnomental Requirements