DIGISYSTEM DSB-500D Manuale utente

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com R EV.1-2017

INSTRUCTION MANUAL FOR WATER BATH DSB-500D & DSB-1000D

Warnings:

* The water in the tank is hot. Do not touch.

* Do not remove the machine during operation.

* Do not disassemble the machine by yourself. In the event of a malfunction, the machine should be

repaired by a qualified technician. Before repairing, turn off the power.

Steps:

1. Take ‘Control head’ out and set it into’ Tank’ as Figure 1

2. Pour pure water (or distilled water) into the ‘Tank’ until water

level covers a half height of the ‘Tank’.

3. Connect with power supply. Please make sure the power

voltage is the same as the voltage showing on the label stuck

on the back of machine. You may see the ‘Power indicator’

becomes red.

4. Press ‘ON/OFF Button’, then you may see the ‘Power indicator’

becomes green. Wait for about 5 seconds; you can see from

the ‘PID Controller’, the present temperature value (PV) on the

upper row and setting temperature value (SV) on the lower

row.

5. Press ‘Up Key’ or ‘Down Key’ to adjust SV value and then press ‘SET Key’ to enter the value.

6. After finishing the work, please press ‘ON/OFF Button’ to turn off the power, and then the ‘Power

indicator’ become red.

Caution:

If water level is under the bottom of ‘Heater’, you must pour water into ‘Tank’ to cover the heater. With the

built-in over heating device, if the temperature is over 100℃, the power will be cut automatically.

Maintenance and care:

1. Keep the machine clean all the time, so no routine maintenance is required. Cleaning can be done with a

damp cloth. Avoid the use of solvents as they may damage the product.

2. For a long time no use, please pour out the water. And dry the tank on a clean cloth.

Control head

Tank

Power indicator

PID

Controller

ON/OFF

Button

Heater

Pump

circulator

Figure 1

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com R EV. 1-2017

Other functions:

Note: Before executing other functions, please follow ‘5. Setting lock’ ( c )to release ‘LOCK’ status.

After executing other functions, please follow ‘5. Setting lock’ to set ‘LOCK’ status.

DIGISYSTEM LABORATORY INSTRUMENTS INC. www.digisystemlab.com R EV. 1-2017

Circuit Diagram:

Troubleshooting Guide

Caution: Always disconnect the power cord before troubleshooting.

Trouble Cause Remedy

Instrument inoperative

Power cord not connected to outlet. Plug instrument in..

Dead power output. Change to different output.

Current is overload, so the no fuse

breaker on the behind of the controller

Push the button of the no fuse

breaker to reset

Control head can’t control

the water temperature

Sensor is broken Replacing a sensor

PID controller Replacing a PID controller

Heater is broken Replacing a heater

Pump Circulator doesn’t

work well

Pump Circulator is broken Replacing a Pump Circulator

Foreign bodies blockaged the pump

Circulator Sweep away the foreign bodies

The key of PID controller

can’t work

The keys has been locked Please refer to page 2, Other

functions 5. (c) to release the

lock status.

Temperature is not stable The initial setting value is not suitable

for the ambient air temperature where

the machine is located

Please refer to page 2, Other

functions 4. to set auto-tuning

function to solve this problem.

PV value is not correct User’s calibration thermometer is

different from the factory’s calibration

thermometer

Please refer to page 2, Other

functions 3 to adjust PV value

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