Introduction; Assembly And Installation; Electrical Connection; Start-Up - Velp Scientifica JLT4 Manual De Instrucciones

1. Introduction

During chemical-physical treatments of waters aimed to coagulate and precipitate pollutants, chemical coagulants are
evaluated and their dosing optimized by jar tests. In relation to the variable composition of wastewaters the chemical dosing
and the test frequency are to be adapted to local conditions. JLT Series is characterized by a settable speed of rotation,
from 10 to 300 rpm, with the real speed showed on the relative display. The steel structure epoxy painted is studied and
tested in order to give the instrument an excellent resistance against the attack of chemical agents and corrosion in general.
The stainless steel stirring rods are adjustable in height by a self-blocking chuck. The examined samples can be lighted by a
back fluorescent lamp controlled by a switch located on front panel.

2. Assembly and installation

Upon receipt and after having removed the packaging, please check the integrity of the instrument. The box includes:
•
Flocculator
•
Plug for power supply

2.1 Electrical connection

Before connecting the instrument to the power supply, make sure that the values on the rating plate correspond to those of
the power supply. Connect the unit to the power supply using the transformer supplied.
Ensure that the socket and the relative cut-off device conform to current safety norms and easy to reach.

2.2 Start-up

Place the beakers containing the sample and then, set the speed and time using ↑ or ↓.

3. Operating controls

The start-up is empowered by the keys ↑ and ↓. t's possible to select the speed from 10 to 300 rpm. The progression speed
is increased by keeping one of the two keys pushed, in order to reach the desired value faster.
It's possible to select three different type of running by the Set key on the "Electronic Timer Window":
• Continuous
It's possible to select the desired modality just by pressing the Set key and the display will show as follows:
• Continuous way: "....."
In order to change the timer modality maintain the Set key pushed for a few seconds. To set the desired time use the keys.
If the time of running is not selected, the stirring is not active.
The display shows the count down and simultaneously the third decimal point turns on to indicate that the count is operative.
At the end, the instrument stops the stirring, the acoustic signal warns the end of the time and the display shows "End".

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, repairs to our units must be carried out in our factory, unless previously
agreed otherwise with local distributors. 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
Power
Dimensions (WxHxD)
Weight (with plug)
Speed range
Time range
Construction material
Environmental ambient temperature
Storage temperature range
Max humidity
Pollution degree

6. Accessories / Spare parts

A00001000 Plastic Becher 1000 ml
A00001002 Transparent plastic Imhoff cone
A00001004 Stand for 2 Imhoff cones
• With timer (minutes base)
• With timer (minutes): "000"
100-240 V / 50-60 Hz
19 W
655x404x296 mm (JLT4)
13.0 Kg (JLT4)
10 ÷ 300 rpm, 1 rpm step
0 ÷ 999 minutes / 0 ÷ 99 hours or continuous
Epoxy painted metal structure
5 - 40 °C (41 - 104°F)
-10... + 60 °C (14 - 140°F)
80%
2
•
Switching VELP 100-240V/12V without plug
•
Instruction manual
• With timer (hours base)
• With timer (hours): "h00"
935x404x296 mm (JLT6)
17.0 Kg (JLT6)
A00001001
A00001003
10000235
5
Glass Becher 1000 ml
Glass graduated Imhoff cone
Foot
EN