Roth AQUASTOP II User manual

LABORATORY COOLING WATER
MONITORING UNIT
AQUASTOP
®II
ROTH SELECTION
Operation Manual
EN

2
Carl Roth GmbH + Co. KG
Schoemperlenstr. 3– 5, D-76185 Karlsruhe · Post office box 10 01 21, Germany
Phone: [phone] - 0 · Fax: [phone] - 149
inf[email protected] · www.carlroth.com
© 01/2015 All rights reserved.
Dear customer,
thank you for having chosen this AQUASTOP®II cooling water monitor. This high quality device
has been produced in the ISO 9001-certified factory Nolden Regelsysteme GmbH and was
shipped to you after a thourough quality test.
Unpack Check the device for eventual shipping damage.
Don't connect damaged equipment!
Claim the damage with your shipping agent.
Read Please read carefully this operating manual before bringing the device into service.
Connect Wiring the device should be done by your qualified electrician following
the instructions given in this manual.
Warranty
Period is 1 year and includes all malfunctions clearly caused by material,
production or design failures. Repair or replacement in this case are free of charge,
you only pay the shipping cost to our factory. No further claims or requirements
can be accepted, especially for consequential losses or damages.
Service We help you quickly and at resonable costs. Just send us the device
with repair order and precise description of the malfunction.
Carefull packaging is essential for a safe shipment!
To facilitate your orientation in this manual, you find the following symbols:
Safety advice
General information
Wiring- and installing advice

3
1FEATURES..........................................................4
2SAFETY ADVICE ................................................5
3SPECIFICATION..................................................6
4OPERATING MODE DESCRIPTION............. 7–
8
5INSTALLATION AND WIRING.............................. 9 –
10
5.1 Installation .....................................................................9
5.2 Connecting to the mains ..............................................9
5.3 Wiring of accessories .............................................9 –10
6OPERATION........................................................ 11
– 13
6.1 Operating elements and keys ..............................11 – 12
6.2 Start-up procedure .....................................................13
7CONFIGURATION............................................... 14 –
16
7.1 Temperature limit value...............................................14
7.2 Cooling water flow limit value .....................................14
7.3 Temperature range .....................................................15
7.4 Cooling water flow range............................................15
7.5 Calibration of the flow meter.......................................16
8ERROR MESSAGES..................................................17
8.1 Temperature sensor breakage ...................................17
8.1 Flow meter error..........................................................17
9SERIAL DATA INTERFACE .......................................18
10 CE-CONFORMITY CERTIFICATE.............................19
CONTENTS

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Coolig water monitoring unit for use in laboratories, switches o any electrical load up to
230 V AC / 3,5 kW in case of
•Undershooting of the chosen minimum cooling water ow:
Solenoid valve in the cooling water admission closes, connected electrical load is disconnected
with all poles
•Overshooting of the chosen maximum temperature limit value:
Cooling water temperature is measured by means of a sensor integrated in the ow meter,
alternatively, a separated Pt100 sensor placed elsewhere in the process can be monitored.
Solenoid valve in the cooling water admission remains open, connected electrical load is
disconnected with all poles
•Acoustical pre-warning before the nal switching action
•Freely programmable alarm limit values
•Data interface RS232 for easy registering of all relevant process data
1FEATURES

5
1. Please read this advice carefully.
2 Keep this operation manual for use near the unit.
3. This is an electrical device driven with high voltage, please respect all relevant safety regulations.
Mains voltage and every voltage greater than 42 volts is dangerous!
4. Connect to a power source following the identication plate on the device.
5. Avoid contamination of the interior with debris, liquids or sprays. Risk of short-circuit,
re or electric shock!
6. Don‘t place the device on hot surfaces or near radiation sources of hot parts.
7. Keep the power connection cable clear of hot parts or sharp edges.
8. Disconnect the power cable immediately, if:
•It was damaged
•Liquid or parts penetrated the device
•The device was damaged by falling down or other mechanical impacts
•You have the suspicion of any malfunction
9. The operator must be thoroughly instructed by a qualied person for the work to be carried out.
10. Intervention at the device must only be carried out by qualied sta members.
For repair, the device should be send back to our factory. Attempted self-repair causes
immediate termination of the warranty period!
If spare parts are required, only parts recommended 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.
2
SAFETY ADVICE

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AQUASTOP®II Laboratory cooling water monitoring unit
Art. Nr. CK Y2 .1
Mains voltage 230 V ± 10 %, 48...63 Hz
Electrical connection Power cord with protective earth
Nominal rating / nominal current 3,5 kW / 15 A
Fuses
16 A MT (load)
0,5 A MT (solenoid valve)
0,2 A MT (controller)
Solenoid valve 230 V, 50 Hz, 120 mA
Cooling water ow range 2 ... 99 l/h
Flow measurement principle inductive
Temperature sensor NTC (integrated in the ow meter) or external Pt100 sensor
Temperature range (internal sensor) 0 ... 80 °C
Temperature range (external Pt100 sensor) 0 ... 250 °C
Alarm output Floating contact, 1x ON, max. 230 V / 1 A
Display
7 segment LED-display in 2 lines, shows simultaneously
waterow and –temperature, can be switched over to other
parameters for control or programming purpose
Signalisation of operational state and alarms: 2x LED jellow : heating / solenoid valve action
2x LED red : temperature alarm / ow alarm
Acoustical alarm Piezo tweeter 90 db
Operation 4 keys
Insulation voltage 4000 V
Housing PVC RAL 3000 / RAL 9002
Dimensions (W x D x H) 205 x 175 x 78 mm
Weight 1,3 kg
3SPECIFICATION

7
This unit monitors continuously the cooling water ow and cooling temperature of any critical laboratory
equipment operating without surveillance and helps preventing damages caused by unsuciant
cooling action. It can easily be mounted on already existing installations.
Cooling water admission is controlled by an solenoid valve tted onto a normal water tap.
The combined ow meter / temperature sensor is tted in the cooling water line downstream
of the equipment to be monitored. In case the critical process temperature to be monitored
must be measured elsewhere in the installation, an external Pt100 sensor can be connected.
This sensor needs then to be placed directly on the spot to be surveyed. Connection of an
external temperature sensor automatically disconnects the integrated temperature sensor
in the owmeter.
The heating of the installation or equipment, e.g. a bath or heating plate, can directly be fed from
the socket on the backside of the AQUASTOP®II. This protects the installation against damages
caused by lack of cooling water, e.g. by a leaky water hose or tube, and also in case of other
unacceptable temperature increase, inside the cooling water or elsewhere in the process.
A oating contact (230 V / 1 A) is available for external alarms. AQUASTOP®II is further equipped
with a RS232 serial data interface which allows easy documentation of measured values on
a connected PC.
4
OPERATING MODE DESCRIPTION
CKY2.1
Fig.: Mounting example of the cooling water monitoring unit.

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4OPERATING MODE DESCRIPTION
During normal operation, AQUASTOP®II works in surveillance mode. The actual temperature of the
cooling water is shown in the upper part of the display. If an external temperature sensor is used
(which automatically disconnects the internal temperature gauge in the ow sensor), make sure that
this sensor is located at an appropriate position to measure the critical temperature in the process.
The measured cooling water ow in liter per minute is shown in the lower part of the display.
If the actual temperature approaches the programmed limit value (see chapter 7.1), a pre-alarm
sounds if the tolerance (see chapter 7.3) is reached. The red LED „High temperature“ ashes and
an acoustical alarm sounds at the same time.
If the limit temperature is reached, the heating load is denitely switched o (yellow LED „Heating“
is extinguished), the red LED „Temp high“ lights continuously and the oating contact for external
alarm is activated. The temperature indication on the display ashes also, the solenoid cooling water
valve remains open to ensure the correct cooling of the installation.
The cooling water ow surveillance works in a similar manner: If the ow approaches the programmed
limit value (see chapter 7.2), a pre-alarm sounds if the tolerance value (see chapter 7.4) is reached.
The red LED „Flow low“ ashes, an acoustical alarm sounds at the same time. If the limit ow value
is reached, the heater as well as the solenoid valve are denitely switched o (yellow LEDs „Heating“
and „Solenoid valve“ are extinguished), the red LED „Flow low“ lights continuously and the oating
contact for external alarm is activated. The ow indication on the display ashes.
An acknowledgement of the pre-alarms is not necessary, as soon as the temperature or the water
ow are again outside the programmed tolerance range, the pre-alarm stops.
On the contrary, the nal alarm provokes a denite switching-o, which can only be recycled by
pressing the green „R“-key (6). This key causes a complete initialisation of the unit, shown by a
circling digit display indication. During 50 s, all alarms are inhibited, the heater as well as the
solenoid valve are switched on again. If the failure is not corrected (increased water ow or adjust
the alarm values), the alarms are re-engaged and act accordingly.

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5
INSTALLATION AND WIRING
5.1 Installation
The installation site must provide easy access for the operator without hazard. Sucient 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.
To adjust the position of the handle, unfasten the screws on both sides of the handle and fasten
them again after adjustment.
5.2 Wiring of power supply
Before wiring the device, make sure that the main switch is in position OFF „0“. Herewith, all poles
are disconnected from the mains voltage. Before working on the device itself or on an installation
connected to it, the unit must be prevented against unintentional restart. This can be done by
retracting the power cable and securing it against re-connecting.
After having nished the wiring completely, switch the device on with main switch in position ON „1“.
5.3 Wiring of accessories
Pin assignment of ow meter with
integrated temperature sensor
Pin assignment of the external (alternative)
Pt100 temperature sensor
Pin assignment of the alarm
connector

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5.3 Wiring of accessories
Fig.: Back AQUASTOP
®II
5INSTALLATION AND WIRING
1External Pt100 temperature
2Flowmeter
3Floating alarm contact max. 230 V / 1 A
4Serial interface RS-232
5Fuse heating 16 A MT
6Fuse solenoid valve 0,5 A MT
7Fuse controller 0,2 A MT
8Power cord
9Socket solenoid valve 230 V
10 Socket heating 230 V, 16 A
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3
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