Page 2
® Operations manual AQUASTOP Dear customer, ® thank you for having chosen this AQUASTOP II cooling water monitor. This high quality device has been produced in our ISO 9001-certified factory and was shipped to you after a thourough quality test. Unpack Check the device for eventual shipping damage.
Page 3
To facilitate your orientation in this manual, you find the following symbols : Safety advice General information Wiring- and installing advice Carl Roth GmbH + Co. KG...
7.2 Cooling water flow limit value 7.3 Temperature range 7.4 Cooling water flow range 7.5 Calibration of the flow meter Error messages 8.1 Temperature sensor breakage 8.2 Flow meter error Serial data interface CE-conformity certificate Carl Roth GmbH + Co. KG...
- Acoustical pre-warning before the final switching action - Freely programmable alarm limit values - Data interface RS232 for easy registering of all relevant process data Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Safety advice 1. Please read this advice carefully. 2. Keep this operations manual for use near the unit. 3. This is an electral device driven with high voltage, please respect all relevant safety regulations. Mains voltage and every voltage greater than 42 volts is dangerous ! 4.
Page 7
If spare parts are required, only parts recom- mended by the supplier must be used. The use of other parts may cause damage and/or hazard for operation personnel. 11. Please respect further recommandations and warnings described in this operations manual. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Specification Mains voltage : 230V ± 10%, 48...63Hz Electrical connection : Power cord with protective earth Nominal rating / nominal current : 3,5kW / 15A Fuses : 16A MT (load) 0,5A MT (solenoid valve) 0,2A MT (controller) Solenoid valve : 230V, 50Hz, 120mA Cooling water flow range :...
Page 9
Acoustical alarm : Piezo tweeter 90db Operation : 4 keys Insulation voltage : 4000 V Housing: PVC RAL3000 / RAL9002 Dimensions: 205 x 175 x 78mm (W x D x H) Weight : 1,3kg Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Operating mode description This unit monitors continuously the cooling water flow and –temperature of any critical laboratory equipment operating without surveillance and helps preventing damages caused by unsufficiant cooling action. It can easily be mounted on already existing installations.
Page 11
® Operations manual AQUASTOP AQUASTOP Fig. : Mounting example of the cooling water monitoring unit Carl Roth GmbH + Co. KG...
Page 12
® Operations manual AQUASTOP During normal operation, AQUASTOP® II works in surveillance mode. The actual temperature of the cooling water is shown in the upper part of the dis- play. If an external temperature sensor is used (which automatically disconnects the internal tem- perature gauge in the flow sensor), make sure that this sensor is located at an appropriate position to measure the critical temperature in the process.
Page 13
If the failure is not corrected (increase water flow or adjust the alarm values), the alarms are re-engaged and act accor- dingly. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Installation and wiring : 5.1 Installation The installation site must provide easy access for the operator without hazard. Sufficient mechanical stability must be guaranteed, also secure the device from slipping on the installation surface. To ease operation and good visibility of the display, the handle can be used as a support.
Page 15
® Operations manual AQUASTOP Pin assignment of the alarm connector Pin assignment of the external (alternative) Pt100 temperature sensor Carl Roth GmbH + Co. KG...
Page 16
® Operations manual AQUASTOP Fig. : Back AQUASTOP® II External Pt100 temperature sensor Flowmeter Floating alarm contact max. 230V / 1A Serial interface RS-232 Fuse heating 16A MT Fuse solenoid valve 0,5A MT Fuse controller 0,2A MT Power cord Socket solenoid valve 230V Socket heating 230V, 16A...
® Operations manual AQUASTOP Oeration 6.1 Operating elements and keys Fig. : Front AQUASTOP Multi-function display „UP“-key „Mode“-key LED signalisation operational state Main switch „Reset“-key „DOWN“-key Carl Roth GmbH + Co. KG...
Page 18
® Operations manual AQUASTOP Key operational functions : Press the UP or DOWN keys (2/7) to increase or decrease the actual value by 1 digit . Move up or down quickly by holding the key pressed. MODE-key, toggles the display from actual value to program mode.
Page 19
During this period, a circling digit on the display shows the initialisation phase. Occasional alarms are only indicated by flashing of the corresponding LED (4), but do not influence the connected heating and/or solenoid valve. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Setting the operational limit values 7.1 Temperature limit value : To alter the temperature limit value, press once the „M“-key (3). On the lower line of the display, „te“ is shown and the temperature limit value shown on the upper display line can now be altered with the „UP/ DOWN“...
Page 21
(see 7.1), at which the acoustical pre-alarm sounds. The new tolerance value is automatically accepted after 20 sec. or after having pressed the „M“-key (3). The unit then switches back to surveillance mode. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP 7.4 Flow tolerance value : Starting from the normal surveillance mode, press and maintain the „DOWN“-key (7), then press additionally the „M“-key (3). On the upper line of the display, „tol“ is shown and the flow tolerance value shown on the lower display line can now be altered with the „UP/DOWN“...
Page 23
The new calibration factor is confirmed by pressing the „M“-key (3). If no confirmation takes place, the unit switches automatically back to normal surveil- lance mode by using the former calibration factor. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP Error messages 8.1 Temperature sensor failure : No signal on the temperature sensor entrance => Check the sensor connector => Check the electrical wiring (might be damaged) 8.2 Flow meter failure : Wrong signal on the flow sensor entrance =>...
- Flow pre-alarm active (binary 0 / 1) - Flow main alarm active (binary 0 / 1) In case of void values, the ASCII-signs «---» are sent at the place of the corresponding value. Carl Roth GmbH + Co. KG...
® Operations manual AQUASTOP DECLARATION OF CONFORMITY This declaration is valid for the following products : Model designation : Coolant monitor ® Type: AQUASTOP Hereby is confirmed, that these products meet in their de- sign and accomplishment as marketed by the manufacturer and if properly used the following EU-directives : EU-Low voltage directive 2004/108/EG...
Need help?
Do you have a question about the AQUASTOP II and is the answer not in the manual?
Questions and answers