Hakko Electronics 937 User manual

SOLDERING STATION

Instruction Manual

●

Thank you for purchasing the HAKKO 937 soldering station.

Please read this manual before operating the HAKKO 937.

Keep this manual readily accessible for reference.

●

CAUTION

When seeking tip replacements, select only “Hakko” genuine soldering iron tips

that are intended for your particular model of soldering iron (Please refer to the

instruction manual). If an incompatible tip or a tip made by another manufacturer

is used, the original performance of the soldering iron may not be obtained.

Furthermore, the heating element, P.W.B. and transformer may be damaged.

TABLE OF CONTENTS

1. PACKING LIST ...........................................................................1

2. SPECIFICATIONS ......................................................................1

3. WARNINGS AND CAUTIONS ....................................................2

4. PART NAMES.............................................................................3

5. SETTING UP & OPERATING THE HAKKO 937........................3

6. PARAMETERS ...........................................................................6

7. CALIBRATION OF IRON TEMPERATURE ................................7

8. CALIBRATION CHART ..............................................................8

9. TIP CARE AND USE ..................................................................9

10. MAINTENANCE .........................................................................9

11. TIP STYLES..............................................................................10

12. ERROR MESSAGES ................................................................11

13. TROUBLESHOOTING GUIDE..................................................12

14.

CHECKING FOR BREAKAGE OF THE HEATING ELEMENT AND CORD ASSEMBLY.

15. PARTS LIST (Station/Iron Holder)............................................16

(Iron)....................................................................17

16. WIRING DIAGRAM ...................................................................18

Card

Coupling Band

1. PACKING LIST Please check the contents of the HAKKO 937 package and

confirm that all the items listed below are included.

HAKKO 937 Station ................................................1

Card ........................................................................1

Soldering Iron (HAKKO 900 (S), 907 or 908) .........1

HAKKO Iron Holder (With Cleaning Sponge) .........1

Coupling Band ........................................................1

Instruction Manual ..................................................1

Cleaning sponge

Iron holder

Iron/907, 908

Iron/900 (S)

Station

900S-ESD

24V AC-50W

Under 2 Ω

Under 2 mV

Ceramic heater

1.2 m (4 ft.)

176 mm

(7 in.)

25 g

(0.06 lbs.)

908-ESD

200 mm

(7.9 in.)

54 g

(0.12 lbs.)

907-ESD

190 mm

(7.5 in.)

44 g

(0.09 lbs.)

2. SPECIFICATIONS

Name

Power Consumption HAKKO 937

60W

Part Name

Output Voltage

Temperature Range

Dimensions

Weight (W/O Cord)

937 Station ESD

24V AC

200~480°C/400~899°F

120 (W) ×93 (H) ×140 (D)mm

(4.7 ×3.7 ×5.5 in.)

1,300 g (2.9 lbs.)

Power Consumption

Tip to Ground Resistance

Tip to Ground Potential

Heating Element

Cord Assembly

Total Length (w/o Cord)

Weight (w/o Cord)

●Soldering Iron●Station

• The tip temperature was measured using HAKKO 191 thermometer.

• Specifications and design are subject to change without notice.

3. WARNINGS AND CAUTIONS

In this instruction manual, “WARNING” and “CAUTIONS” are defined as follows.

WARNING

WARNING: Misuse may potentially cause death of, or serious injury to, the user.

CAUTION : Misuse may potentially cause injury to the user or physical damage

to the objects involved.

For your own safety, be sure to comply with these precautions.

CAUTION

When the power is on, the tip temperature is between

200°C/400°F and 480°C/ 899°F.

Since mishandling may lead to burns or fire, be sure to comply with

the following precautions.

●Do not touch the metallic parts near the Tip.

●Do not use the product near flammable items.

●Advise other people in the work area that the unit can reach a very high

temperature and should be considered potentially dangerous.

●Turn the power off while taking breaks and when finished using the unit.

●Before replacing parts or storing the unit, turn the power off and allow the unit

to cool to room temperature.

To prevent damage to the unit and ensure a safe working

environment, be sure to comply with the following precautions.

●Do not use the unit for applications other than soldering.

●Do not rap the soldering iron against the work bench to shake off residual

solder, or otherwise subject the iron to severe shocks.

●Do not modify the unit.

●Use only genuine HAKKO replacement parts.

●Do not wet the unit or use the unit when your hands are wet.

●Do not bend or damage the card. Should the card become bent, do not force

the card into the station.

●The soldering process will produce smoke, so make sure the area is well

ventilated.

●While using the unit, don’t do anything which may cause bodily harm or

physical damage.

4. PART NAMES

Iron receptacle

Large cleaning

sponge

Small cleaning

sponge

Cord assembly

Iron holder base

Membrane sheet

Power switch

CAL pot plug/calibrator

Card

5. SETTING UP & OPERATING THE HAKKO 937

CAUTION :

The sponge is compressed. It will swell when moistened with water.

Before using the unit, dampen the sponge with the water and squeeze it dry.

Failure to do so may result in damage to the soldering tip.

A.Iron holder

1. Small cleaning sponge

Dampen the small cleaning sponge

with water and then squeeze it dry.

Place it in one of the 4 openings

of the iron holder base.

2. Add water to approximately the

level as shown. The small sponge

will absorb water to keep the larger

sponge above it wet at all times.

*The large sponge may be used alone

(w/o small sponge & water).

Dampen the large cleaning sponge

and place it on the iron holder base.

Note: The iron receptacles for the 900

(S) and the 907/908 soldering

irons are different. Be sure to use

the proper one for each type of

soldering iron. (Refer to Parts List).

Heater lamp

B.Connections

1. Connect the cord assembly to

the receptacle.

2. Place the soldering iron in the

iron holder.

3. Plug the power cord into the

power supply. Be sure to ground

the unit.

4. Turn the power switch to ON.

NOTE:

The temperature is preset at 400°C

at the factory. (The No.937-4, -5,

and -6, are preset at 750°F.) The

heater lamp will flicker when the

temperature has stabilized.

5. Press to display the preset

temperature. It will be displayed

for two seconds.

CAUTION : Be sure to turn off the power switch before connecting or disconnecting the

soldering iron. Failure to do so may damage to the Station.

Receptacle

Align the grooves and pins.

And push straight in.

Turn clockwise

firmly.

CAUTION

Be sure to insert the correct end of the card into the card slot.

While setting the temperature, the heating element is off.

Press or

Insert the card

Press once

C.Set the temperature

Example: Change the temperature from

400°C to 350°C.

1. Insert the card into the card slot on

the front panel of the station. The

left-most digit in the display (the

100’s digit) will begin flashing,

indicating that the station is in the

temperature setting mode and that

the 100’s digit can be adjusted.

Using the or button to

increase or decrease the value,

select the desired value for the 100’s

digit. The 100’s digit can be set to 2,

3, or 4. Press when the desired

value is displayed. This will cause

the middle digit (the 10’s digit) in the

display to begin flashing.

CAUTION

The soldering iron must be placed

in the iron holder when not in use.

Press or

Press once

5. SETTING UP & OPERATING THE HAKKO 937

3. Again using the or

button, select the desired value

for the 10’s digit. The 10’s digit

can be set to 1, 2, 3, 4, 5, 6, 7, 8,

9, or 0. Press when the

desired value is displayed. This

will cause the digit on the right

(the 1’s digit) in the display to

begin flashing.

4. Again using the or

button, select the desired value

for the 1’s digit. The 1’s digit can

be set to 1, 2, 3, 4, 5, 6, 7, 8, 9, or

0. Press when the desired

value is displayed. This will store

the temperature setting in

memory, display the temperature

setting, and initiate heater

control.

1. Press and hold it down for at least one second.

The current temperature setting will be displayed for a

moment, then the 100’s digit will begin flashing,

indicating that the station is now in the temperature

setting mode. Proceed with the procedure on page

4&5.

2. If is pressed for less than one second, the present

temperature setting will be displayed for two seconds,

then the display will again show the tip temperature.

1. After setting the temperature, remove the card. The

preset temperature cannot be changed until the card

is reinserted, even if the power switch is turned off.

Thus, the power can be turned off and on without

having to reset the temperature each time, and

accurate and safe temperature control is assured.

2. Any HAKKO 937 card can be used with any HAKKO

937 station.

The HAKKO 937 will operate normally with a card inserted.

If the power is turned off while the card is inserted, when

the power is turned on again, the previously set

temperature will be used to heat up the soldering iron.

For greater convenience and soldering efficiency, two

stations can be securely stacked.

NOTE:

If the power switch is turned off during any step of the

temperature adjustment procedure, the setting will not be

stored in memory.

C.Setting or changing the

temperature (continued)

To change the temperature

setting when the card has been

left in the station...

The card

Stacking stations

6. PARAMETERS

The HAKKO 937 has three user-adjustable or viewable

parameters: a) Temperature display mode (Centigrade or

Fahrenheit), b) Heater-error temperature tolerance, and

c) Room temperature compensation value (test mode).

Once parameter-input mode is entered, these

parameters are set in the order shown. Once all three

parameters have been set, normal operation is resumed.

1. Turn off the power switch.

2. Press and hold the and buttons

simultaneously, and turn on the power switch.

3. Continue holding down the and buttons until

the display indicates either (for Centigrade) of

(for Fahrenheit). The station is now in

parameter input mode.

4. Press either the or button to alternately

display and .

5. When the desired method is displayed, press .

The heater-error temperature will now be displayed

and the left-most digit (100’s digit) in the display will

begin flashing.

The heater-error temperature tolerance parameter is

entered in the same manner as used to set the

temperature. (see pg. 4, 5, steps 2-4.)

Be sure to use a value within the allowable range. (see

chart at left). If a value outside this range is selected, the

display will again flash the 100’s digit. Should this occur,

re-enter a correct value.

After setting the heater-error temperature tolerance, the

display will show the room temperature compensation

value (test mode).

This is the measured temperature of the soldering iron

tip. It is used to calibrate the tip temperature. (see pg. 7,

Calibration of iron temperature)

No inputs are made here. The display will not blink nor

will the heater receive power. Press to complete

parameter input. The soldering temperature setting will

be displayed for two seconds, then power will be

supplied to the heater and normal temperature control

will begin.

Heater-error temperature range

Centigrade: 30 - 150°C

Fahrenheit: 60 - 300°F

Parameter input mode

1. Centigrade or Fahrenheit

temperature display

2. Heater-error temperature

tolerance

(see Heater error on page 11)

3. Room temperature

compensation value

(test mode)

7. CALIBRATION OF IRON TEMPERATURE

Calibration is required whenever the soldering iron, or its heating element or tip have

been replaced. Although either of the two following calibration methods can be used,

calibration with a tip thermometer is more accurate.

Calibration with a tip

thermometer 1. Set the temperature to 400°C (750°F).

2. When the temperature stabilizes, remove the CAL pot

plug.

3. Using a regular or small cross point screwdriver, turn

the screw marked CAL on the front panel of the

station until the tip thermometer indicates a

temperature of 400°C (750°F).

Note: Turn the screw clockwise to increase the temperature

and counterclockwise to reduce the temperature.

4. Reattach the CAL pot plug.

1. Allow the HAKKO 937 to cool to room temperature.

(approx. 1 hour)

2. Press and hold down the and buttons

simultaneously, and turn the power switch on. (see

Parameters on pg. 6)

3. Following the procedure on page 6, display the room

temperature compensation value (test mode). This is

the measured temperature of the soldering iron tip.

CAUTION

If a mistake is made while performing steps 2 or 3, the

station will start up normally and the heating element will

begin warming up. Should this happen, turn the station off

and wait until it has again cooled to room temperature.

4. Using a regular or small cross point screwdriver, turn

the screw marked CAL on the front panel of the

station until the display indicates the room

temperature plus or minus the value in the calibration

chart on page 8.

5. Press to complete the calibration.

Power will now be supplied to the heater and normal

temperature control will begin.

Calibration with a room

thermometer (test mode)

We recommend the HAKKO 191

thermometers and HAKKO 192

soldering tester for measuring the tip

temperature.

8. CALIBRATION CHART

Example: To calibrate the 900M-T-LB tip at a room temperature of 22°C (70°F), adjust the CAL

potentiometer until the digital display reads 20 (66).

Room temperature:........... 22°C (70°F)

Compensation value:........ -2°C (-4°F)

Digital display: .................. 20°C (66°F)

900STip No.

900S-T-1.2D

900S-T-1.6D

900S-T-2C

900S-T-1C

900S-T-B

900S-T-I

Compensation value

907 Tip No.

900M-T-0.8D

900M-T-1.2D

900M-T-1.6D

900M-T-2.4D

900M-T-3.2D

900M-T-1.2LD

900M-T-SB

900M-T-B

900M-T-LB

900M-0.5C

900M-0.8C

900M-T-1C

900M-T-1CF*

900M-T-1.5CF*

900M-T-2C

900M-T-2CF*

900M-T-3C

900M-T-3CF*

900M-T-4C

900M-T-4CF*

900M-T-K

900M-T-R

900M-T-RT

900M-T-SI

900M-T-I

900M-T-H

900M-T-1.8H

900M-T-S4

Compensation value

+2°C (+4°F)

-2°C (-4°F)

+7°C (+12°F)

-2°C (-4°F)

-5°C (-9°F)

-2°C (-4°F)

+4°C (+7°F)

908 Tip No.

900L-T-B

900L-T-2B

900L-T-2.4D

900L-T-3.2D

900L-T-2C

900L-T-2CF*

900L-T-3C

900L-T-3CF*

900L-T-4C

900L-T-4CF*

900L-T-5C

900L-T-5CF*

900L-T-I

900L-T-K

Compensation value

-5°C (-9°F)

+5°C (+9°F)

9. TIP CARE AND USE

Tip temperature

Cleaning

When not in use

After use

High soldering temperatures can degrade the tip. Use the lowest

possible soldering temperature. The excellent thermal recovery

characteristics ensure efficient and effective soldering even at low

temperatures. Low temperatures also protect the soldered items

from thermal damage.

Clean the tip regularly with a cleaning sponge, as oxides and

carbides from the solder and flux can from impurities on the tip.

These impurities can result in defective joints, of reduce the tip’s

heat conductivity.

When using the soldering iron continuously, be sure to loosen the

tip and remove any oxide at least once a week. This helps prevent

seizure and reduction of the tip temperature.

Never leave the soldering iron sitting at a high temperature for

long periods, as the tip’s solder plating will become covered with

oxide, which can greatly reduce the tip’s heat conductivity.

Wipe the tip clean and coat it with fresh solder.

This helps prevent tip oxidation.

10. MAINTENANCE

Inspect and clean the

tip 1. Set the temperature to 250°C (482°F)

2. When the temperature stabilizes, clean the tip with the cleaning

sponge and check the condition of the tip.

3. If there is black oxide on the solder-plated portion of the tip,

apply new flux-contained solder and wipe the tip on the

cleaning sponge. Repeat until the oxide is completely removed.

Coat with new solder.

CAUTION

Never file the tip to remove oxide.

4. If the tip is deformed or heavily eroded, replace it with a new

one.

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