ESAB JK 50 Powder dryer User manual

Brand: ESAB

Model: JK 50 Powder dryer

Category: Tumble dryers

Type: User manual

ESAB JK 50 Powder dryer is used for drying and storing welding powder within the temperature range of 50- 500 °C. It is equipped with a digital temperature controller that allows for precise setting and monitoring of both drying and storage temperatures. The automatic operation mode enables timed drying and storage cycles for up to seven days a week, while the manual mode provides direct control over the drying process. The unit features a conveyor screw that transports the powder through the resistor tube during drying, ensuring even heat distribution and preventing clogging.

JK-50 - Powder Dryer

1 (5) www.esab.com

Use

The unit is intended for drying and storing welding powder in the temperature range 50-500

C. The

unit is to be used only in accordance with these instructions. Is must not be used for any other

purpose because of possible injuries or material damage.

Before use

Check the unit for transport damages; do not connect a faulty unit to the mains. Check that the

voltage and frequency marked on the rating plate match the values of the mains to which the unit is

to be connected.

Location and connection to mains

To avoid overheating, the clearance to any material must be no less than 0,5 m on any side and no

less than 1 m above the unit. Make sure that there are no obstacles and no flammable material closer

to the unit. The unit must never be covered. Place the unit on a flat surface. The unit may not be

used in environments where there is danger of explosion (EX). The unit is connected to mains either

semi-permanently by screwing the connection cord to the wall outlet or by adding an approved plug

to the cord. If the connecting cord is too short it has to be replaced. Never splice the cord or use

extension cords. Check the direction of rotation of the motor before filling the dryer. The correct

direction is indicated by the arrow on the fan box of the motor.

Using the unit

Connect the unit to the mains. The pilot light (8, Fig. 1) lights up. Set the timer (1) to the correct day

of week and time. Turn the function knob (3) to position 0. Turn the main switch (2) to position 1.

Set, in the manner explained below, the drying and storage temperatures according to the

recommendations of the manufacturer of the powder. Using the function knob (3), select either

automatic operation (position 2), in which case the drying cycles are determined by the timer, or

manual operation (position 1), in which case the drying cycle starts when the start button (4) is

pushed, and the timer is overridden. The indicator light (9) is on whenever the drying cycle set in

the timer is active, or the unit is manually set to drying. When the drying function is not active, the

indicator light (10) is on, indicating that the unit is in the storage mode. In the drying mode, the

motor rotates the conveyor screw inside the resistor tube. The screw transports powder through the

tube, where it is dried.

Setting temperatures

Drying temperature

The drying temperature is regulated using a double-circuit digital temperature controller (5); two

sets of instructions can be set. Instruction 1 is that for the drying temperature, instruction 2 that for

the storage temperature. Set the drying temperature instruction as follows: Press and keep depressed

the SET 1 button, the display will show the current drying temperature instruction. Keeping SET 1

depressed, set the desired temperature using the arrow buttons. When the desired temperature is

shown in the display, release the SET 1 and arrow buttons. This will cause the display to show the

current dryer temperature. The desired drying temperature is now set. Pressing the arrow button

continuously when setting the temperature will first cause the reading of the temperature instruction

to change slowly over approx. 10 degrees, then rapidly.

JK-50 - Powder Dryer

2 (5) www.esab.com

Storage temperature

The storage temperature instruction is set in the same manner as that for the drying temperature,

using the button SET 2. Keeping SET 2 depressed, set the desired temperature using the arrow

buttons. When the desired temperature is shown in the display, release the SET 2 and arrow buttons.

This will cause the display to show the current dryer temperature.

Both the drying and storage temperature settings can be checked at any time by pressing the SET 1

or SET 2 button. This will cause either the drying temperature or the storage temperature instruction

to be displayed, depending on which button was pressed.

Automatic operation

The timer may be set for timed drying and storage operation separately for seven days a week. Set

the starting time of the drying cycle by depressing a rider of the timer towards the centre. Separate

drying cycles can be defined for each day. For automatic operation of the dryer, turn the function

knob (3) to position 2. If no drying cycle is on, the pilot light (10) will light up to show that the unit

is in storage mode. Instruction 2, the storage temperature instruction will be carried out. The pilot

light (10) will go off and the pilot light (9) will light up when the drying sequence commences.

Instruction 1, the drying temperature instruction will be carried out. When the drying temperature is

reached, the pilot light (9) will be extinguished and pilot light (10) will light. When the unit enters

the storage mode, the motor will still run for approx. 15 minutes in order to prevent the powder in

the resistor tube from burning and clogging the conveyor screw.

Manual operation

Turn the function knob (3) to position 1 and press the START button (4). Pilot light (10) will light

to indicate that the dryer is in the drying mode. When the drying temperature is reached, the dryer

functions as explained above under Automatic operation.

Operation is discontinued in both automatic and manual operation by turning the function knob (3)

or the main switch (2) to position 0.

Other matters to be considered

If the powder is dried at temperatures higher than 350

C, the powder should be transferred to a

storage device, e.g. the JS 200 silo. This because the powder has a tendency to clod at high

temperatures, and clodded powder could jam the spiral of the dryer. Always fill the dryer to capacity

(50 l). Although the temperature can be set up to 999

C, the overheating breaker (6) limits the

actual temperature to 500

C. Reactivate the breaker by lifting the hood and pressing the button.

When pouring fine powder into and out of the dryer, the powder may cause dust. A dust respirator

filter should be worn when handling the powder. Extreme care should be exercised when

pouring powder from the dryer, as it may be very hot, depending on the temperature chosen,

and may cause burns if handled carelessly. Turn the main switch (2) to position 0, whenever the

dryer is not in use. Turning the dryer off by the main switch or disconnecting it from the mains will

not erase the settings. Turning the dryer off from the main switch also will not cause the timer to

stop. The timer will stop only if the unit is disconnected from the mains by dismounting the cord,

when a fuse is blown or in case a power failure occurs. The timer should then be reset when

recommencing operation.

JK-50 - Powder Dryer

3 (5) www.esab.com

TIMER

MAIN SWITCH

OPERATION

1= MANUAL

2= AUTO

START

STOP

JK-50

234

810

Fig. 1. The control cabinet of the dryer. 1. Timer, 2. Main switch. 3. Function knob. 4. Start button. 5. Temperature

selector, 6. Fuse, 7. Overheating protection, 8. Pilot light, 9. Pilot light, 10. Pilot light

Basic settings of the control unit

The parameters of the control unit are preset by the manufacturer. However, the utilisation of certain

functions require that these settings be changed. The settings may also change due to entering errors.

The following is a review of the changing of settings, and the original settings of each parameter. If

the operation of the dryer does not meet your requirements, the present parameter settings should be

changed into the factory settings, and the operation retested.

SET 1

SET 2

PRG

DOWN

Concealed

button

Fig. 2. Buttons of the temperature selector.

Enter the programming mode by simultaneously pressing the buttons PRG, SET 1 and the

"concealed button" below PRG. The pilot light I starts flashing, and the symbol of the parameter d1

will appear in the display. The value of the selected parameter is shown in the display by pressing

the SET 1 button. The parameter's value is changed by simultaneously pressing the SET 1 button

and either arrow button. The value of each parameter setting can be displayed and changed as shown

above. Exit the programming mode by simultaneously pressing the PRG button and the "concealed

button". The device returns to the normal operation mode, if the buttons are not activated within a

certain time. The parameters and their original settings are listed below.

JK-50 - Powder Dryer

4 (5) www.esab.com

Parameter Operation Set to value

d1 Connection difference, output 1

the temperature difference between

the setting and the actual value,

when the resistors are turned on.

-1

d2 Connection difference, output 2 -1

LS1 Lower limit of set point, output 1 0

LS2 Lower limit of set point, output 2 0

HS1 Upper limit of set point, output 1 500

HS2 Upper limit of set point, output 2 250

od Reaction delay (0 - 500 s) 0

CAL Calibration 0

PSE Type of sensor

Fe = TcJ; Cr = TcK; rh = TcS

OCO Interdependence between set points

di = SET 2 dependent on SET 1

in = SET 2 independent of SET 1

HC1 heating/cooling, output 1

H = heating

C = cooling

HC2 heating/cooling, output 2

H = heating

C = cooling

rP1 state of the relay when the sensor is

damaged, output 1

ro = the relay is open

rc = the relay is closed

rP2 state of the relay when the sensor is

damaged, output 2

ro = the relay is open

rc = the relay is closed

LF1 Switch of function for the pilot light

showing the status of output 1

di = the pilot light is on when the

relay is closed

in = the pilot light is on when the

relay is open

LF2 Switch of function for the pilot light

showing the status of output 2

di = the pilot light is on when the

relay is closed

in = the pilot light is on when the

relay is open

dro change of display

P = the display shows the actual

temperature

S = the display shows the drying

temperature set

JK-50 - Powder Dryer

5 (5) www.esab.com

hdd half digit display

n = display with 1

C increments

y = display with 5

C increments

tab Shows the number of parameters,

cannot be programmed

Locking and limiting temperatures

An upper (HS1) and lower limit (LS1) may be set for the drying temperature. If you want to limit

the drying temperature to the range 250 - 350

C, set parameter HS1 to 350 and parameter LS1 to

250. The temperature can thus be locked to a fixed value. By assigning parameter LS1 the value 350

and parameter HS1 the value 351, the drying temperature is locked at 350

The storage temperature range can be limited in the same manner using the parameters HS2 and

LS2, changing their values as explained above.

Specification

Voltage 3 ~ 400V 50 Hz

Power 3700 W

Drying temperature 50 - 500

Storage temperature 50 - 250

Capacity approx. 50 l

Outer diameter/height 860 / 1600 mm

Weight approx. 190 kg

Heating-up speed approx. 3 1/2 hours to maximum temperature when filled to capacity

Cooling speed approx. 15 hours from 500

C to 150

C when filled to capacity

Equipment temperature selector, timer, main switch, function knob, pilot lights, start

button, overheating protection, fuse

ESAB AB Made by: Ergi Oy

SE – 695 81 Laxå Finland

Phone: +46 584 81000 phone: +358-9-753 8005

Fax: +46 584 13056 fax: +358-9-753 8460

ESAB JK 50 Powder dryer User manual

Brand: ESAB

Model: JK 50 Powder dryer

Category: Tumble dryers

Type: User manual

Download PDF

report

ESAB JK 50 Powder dryer User manual

ESAB JK 50 Powder dryer User manual

Related papers

Other documents