PK-405 - Dryer Cabinet
Use
The unit is intended for drying and storing welding electrodes in the temperature range 50-400 oC.
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 damage; 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 in a dry place on a flat surface. The
enclosure class of the cabinet is IP 21, thus it cannot be used if susceptible to splashing water. 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.
Using the unit
Do not load the cabinet with packaged electrodes, they must be taken out of their package first. The
protective nets of the resistors must remain in place during operation. If the amount of electrodes is
much below capacity, the electrodes should be distributed evenly over the middle shelf to minimize
temperature gradients. Connect the unit to the mains. The pilot light (1, Fig. 1) lights up. 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 electrodes. The indicator
light (5) is on whenever the controller has turned the resistor on.
Setting the temperature
The temperature of the cabinet is regulated using a digital temperature controller (4). Set the
temperature instruction as follows: Press and keep depressed the SET button, the display will show
the current temperature instruction. Keeping SET depressed, set the desired temperature using the
arrow buttons. When the desired temperature is shown in the display, release the SET 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. The temperature setting can be checked at any time by pressing the SET button. This will
cause the temperature instruction to be displayed in the display of the controller.
Other matters to be considered
Keep the cover of the ventilation opening open, whenever the cabinet is at drying temperature. This
will improve the evacuation of moisture from the cabinet. The cover may be screwed down during
prolonged storage cycles. Turn the main switch (2) to position 0 whenever the cabinet is not in use.
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PK-405 - Dryer Cabinet
Turning the cabinet off by the main switch or disconnecting it from the mains will not erase the
settings.
MAIN SWITCH
1
Fig. 1. The control cabinet of the dryer cabinet. 1. Pilot light, 2. Main switch, 3. Pilot 4. Temperature controller
2
34
PK- 405
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 cabinet does not meet your requirements, the present parameter settings should
be changed into the factory settings, and the operation retested.
PRG
Concealed
button
Fig. 2. Buttons of the temperature selector.
SET 1
SET 2
UP
DOWN
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 button. The parameter's value is changed by simultaneously pressing the SET button and
either arrow button. Releasing the SET button will return the parameter symbol to the display. 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.
Parameter Operation Set to value
d1 Connection difference;
-1
the temperature difference between
the setting and the actual value,
when the resistors are turned on
LS1 Lower limit of set point 0
HS1 Upper limit of set point 450
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PK-405 - Dryer Cabinet
od Reaction delay(0-500 s);
the delay after which the relay
functions after the temperature
difference between the setting and
the actual temperature has reached
the value of the connection
difference d1
CAL Calibration 0
PSE Type of sensor
Cr
Fe = TcJ; Cr = TcK ; rh = Tcs
HC1 heating/cooling
H = heating
C = cooling
rP1 state of the relay when the sensor is
damaged
ro = the relay is open
rc = the relay is closed
LF1 Switch of function for the pilot
light showing the status of the
output
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
temperature set
hdd half digit display
0
H
ro
di
P
n
n = display with 1 oC increments
y = display with 5 oC 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 oC, 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 oC.
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PK-405 - Dryer Cabinet
Specification
Voltage 1 ~ 230V 50 Hz
Power 1 ~ 3500 W
Drying temperature 50 - 400 oC
Storage temperature 50 - 400 oC
Capacity approx. 42 packages of electrodes
Dimensions W*D*H 860*820*1260 mm
Weight approx. 230 kg
Equipment temperature selector, timer, main switch, pilot lights
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
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