Velp Scientifica JLT Series Скачать руководство пользователя

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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

•

Switching VELP 100-240V/12V without plug

•

Instruction manual

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

• With timer (minutes base)

• With timer (hours base)

It’s possible to select the desired modality just by pressing the Set key and the display will show as follows:
• Continuous way: “…..”

• With timer (minutes): “000”

• With timer (hours): “h00”

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

100-240 V / 50-60 Hz

Power

19 W

Dimensions (WxHxD)

655x404x296 mm (JLT4) 935x404x296 mm (JLT6)

Weight (with plug)

13.0 Kg (JLT4) 17.0 Kg (JLT6)

Speed range