6
3.2 Error messages
The unit is fitted with safety devices which cut-off the power supply to the heating plate in the case of malfunctions.
Display
Cause
Flashing Stirrer LED (once every second)
Fault in the stirring system
Flashing Heating LED (once every second)
Overheated heating plate or thermocouple open
Flashing Heating LED (2 times every second)
Fault in the temperature reading circuit
Flashing Heating LED (once every 3 seconds)
Thermocouple wires reversed or white wire of
potentiometer board not connected
Should any of the above occur, please contact your nearest VELP Scientifica service centre.
4. Maintenance
No routine or extraordinary maintenance is necessary apart from periodically cleaning the unit as described in this manual.
In compliance with the product guarantee law, replace the fuses and repairs to our units must be carried out in our factory,
unless previously agreed otherwise with local distributors and using Velp spare part only.
The instrument must be transported in its original packaging and any indications present on the original packaging must be
followed (e.g. palletized).
It is the responsibility of the user, to properly decontaminate the unit in case of hazardous substances remaining on the
surface or interior of the device. If in doubt about the compatibility of a cleaning or decontamination product, contact the
manufacturer or distributor.
4.1 Cleaning
Disconnect the unit from the power supply and use a cloth dampened with an non-inflammable non-aggressive detergent.
5. Technical data
Power supply
230V / 50-60Hz (+/-10%)
Dimensions WxHxD
715x115x246 (28.1x4.5x9.7)
Weight
8.6 Kg (AM4) ; 9.0 Kg (AM4X)
Power input
630W x 4 (2520W)
Heat output
600W x 4 (2400W)
Diameter of the heating plate
135mm x 4
Programmable temperature range
50
– 370 °C
Type of temperature control
Analog
Overtemperature protection
Yes
Motor rating output
10W x 4
Stirring capacity
20 liters of H
2
O x 4
Programmable speed range
100
– 1500 rpm
Counter-reaction
Constant speed even when the viscosity changes
Type of motor control
Electronic speed control
Temperature range
+5…+40 °C
Storage temperature range
-
10…+60 °C
Max humidity
80%
Pollution degree CEI EN61010-1
2
Overvoltage category
II
Noise level
<< 80 dBa
Max altitude
4000 m
