345-203 - Door closer Hard Head - Free user manual and instructions

Product Type	Door closer
Brand	Hard Head
Model	345-203
Material	Steel body with nylon bushings
Dimensions (approx.)	260 x 60 x 80 mm
Weight (approx.)	1.5 kg
Mounting Type	Surface mounted (standard arm or parallel arm)
Door Handing	Left-hung or right-hung
Max Door Opening Angle	180°
Closing Speed Adjustment	Yes, via valve 1 (hex key)
Locking Force Adjustment	Yes, via valve 2 (hex key)
Opening/Closing Force Adjustment	Yes, via set screw (hex key)
Backcheck (Arrester)	Adjustable, prevents door from opening fully into wall
Delay Action	Adjustable, slow closing to 70°
Included Accessories	Mounting template, screws, hex key, arm bracket
Compliance	EN 1154 (standard for door closers)
Maintenance	Quarterly: check operation, tighten screws, lubricate joints
Safety Warning	Incorrect installation or adjustment can cause personal injury or material damage
Repairability	Adjustable valves and replaceable arm parts
Use	Interior or exterior doors up to standard weight

Frequently Asked Questions - 345-203 Hard Head

How do I install the door closer for a left-hung door?

For left-hung doors, mount the closer on the opening side with the arm closing clockwise. Use template A, mark holes, predrill 3 mm for wood or 6 mm for metal, and secure with supplied screws. Attach the arm bracket and adjust the outer arm to right angles using set screw A.

How do I adjust the closing speed?

Use the supplied hex key to turn valve 1 (closing speed) clockwise to slow the door or anticlockwise to speed it up. Do not turn more than two turns anticlockwise from factory setting to avoid leakage.

How do I adjust the locking force?

Use the hex key to turn valve 2 (locking force). Clockwise increases the force, anticlockwise decreases it. Same caution: max two turns anticlockwise from factory setting.

What is the difference between standard arm and parallel arm mounting?

Standard arm mounts on the opening side of the door. Parallel arm mounts on the closing side, requiring the closer shaft to be preloaded 45° towards the hinge edge. Use template A for standard, template B for parallel.

How do I enable the delay action feature?

Do not use the backcheck arrester when using delay action. Turn the delay valve clockwise to increase the slow closing zone up to 70°. Do not close the valve completely.

What should I do if the door does not close completely?

First, increase the closing speed or locking force slightly. If still not closing, check door alignment in the frame and ensure the closer is correctly installed. Adjust the opening/closing force if needed.

How often should I maintain the door closer?

Perform a quarterly check: ensure the door closes properly, all screws are tight, and lubricate the closer joints and door hinges with thin oil.

Can I mount the closer on a metal door?

Yes. For metal doors/frames, drill 6 mm holes for M6 screws. Use provided screws. Ensure the closer is compatible with the door weight.

What tools are included with the door closer?

The package includes a hex key for valve and set screw adjustments, mounting screws, and fixing brackets. A drill and awl/pencil are needed for marking and predrilling.

What is the maximum opening angle for the door?

The door can open up to 180°. The backcheck arrester can be adjusted to prevent the door from opening fully into the wall.

USER MANUAL 345-203 Hard Head

Operating Instructions for Door Closer

345-203

SV Bruksanvisning i original

NO Bruksanvisning i original

EN Operating instructions in original

SVENSKA 4

BESKRIVNING 4

Arm....4

Fitted on opening side of the door 30

Mounting 31

INSTALLATION 31

Door closer 32

Adjusting the control valves 32

Closing speed/locking force 32

Adjusting the opening/closing force 33

PARALLEL ARM 34

Fitted on closing side of the door 34

Mounting 35

INSTALLATION 35

Door closer 36

Adjusting the control valves 36

Closing speed/locking force 36

Adjusting the opening/closing force 37

Testing 37

Quarterly maintenance 37

MONTERING

MONTERING

Dörrstängningsvinkel (180°–10°)

1. Splint
2. Låseskive
3. Justerbar ytre arm
4. Justeringsskrue A
5. Nylonbøssing
6. Sekskantskrue M6
7. Fjærskive
8. Stor skive
9. Vertikal arm

Opphenging

VENSTREHENGING LUKKING MED KLOKKEN

H∅YREHENGING LUKKING MOT KLOKKEN

MONTERING

1. Nylonbøssing
2. Låseskive
3. Parallellarmfeste
4. Justerbar ytre arm
5. Justeringsskrue A
6. Sekskantskrue M6
7. Fjærskive
8. Stor skive
9. Vertikal arm

Opphenging

VENSTREHENGING LUKKING MED KLOKKEN

H∅YREHENGING LUKKING MOT KLOKKEN

MONTERING

1. Monter parallellarmfestet på armen.

Dørlukkingsvinkel (180°–10°)

MONTAŻ

MONTAŻ

Read the Operating Instructions carefully before use!

DESCRIPTION

ARM

Fitted on opening side of the door

1. Cotter
2. Lock washer
3. Adjustable outer arm
4. Set screw A
5. Nylon bushing
6. Hex screw M6
7. Spring washer
8. Large washer
9. Vertical arm

Mounting

LEFT-HUNG CLOSING CLOCKWISE

RIGHT-HUNG CLOSING ANTICLOCKWISE

INSTALLATION

1. Align the template A to the hinge edge of the door. Mark out holes for the door closer and arm bracket with a pen, awl or sharp knife. Predrill holes with a 3 mm drill in wooden door/frame. Drill 6 mm holes for M6 screw in metal door/frame.

1. Fit the door closer with the supplied screws.

1. Fit the bracket on the arm.

1. Fit the arm on the mechanism as shown in the loading diagram. Hold the vertical arm in the loading position and fit the arm bracket on the frame. Adjust, if necessary, the outer arm to right angles with the set screw A.

Adjust the control valves on the door closer as shown in step 5.

Step 5

Door closer

IMPORTANT! An incorrectly installed or adjusted door closer can cause personal injury and or/material damage.

Adjusting the control valves

Closing speed/locking force

1. Closing speed

2. Locking force

Door opening angle (0°–180°)

Door closing angle (180°–10°)

Adjust the closing speed (valve 1) and locking force (valve 2) with the supplied hex key. Turn the nut clockwise to reduce the closing speed. Do not turn the valves more than two turns anticlockwise from the factory setting, this will cause leakage.

Adjusting the opening/closing force

Adjust the opening/closing force with the supplied hex key.

Increase/reduce the force by turning the set screw in the direction shown in the diagram.

PARALLEL ARM

Fitted on closing side of the door

1. Nylon bushing
2. Lock washer
3. Parallel arm bracket
4. Adjustable outer arm
5. Set screw A
6. Hex screw M6
7. Spring washer
8. Large washer
9. Vertical arm

Mounting

INSTALLATION

1. Align the template B to the hinge edge of the door. Mark out holes with a pen, awl or sharp knife. Predrill holes with a 3 mm drill in wooden door/frame. Drill 6 mm holes for M6 screw in metal door/frame.

1. Fit the door closer with the supplied screws.

1. Fit the parallel arm bracket on the arm.

1. Preload the door closer by turning the shaft on the underside of the door closer about 45° to the hinge edge on the door. Remove set screw A and fix the parallel arm bracket. Adjust the outer arm to the correct angles and replace screw A.

Adjust the control valves on the door closer as shown in step 5.

Door closer

IMPORTANT! An incorrectly installed or adjusted door closer can cause personal injury and or/material damage.

Step 5

Adjusting the control valves

Closing speed/locking force

1. Closing speed
2. Locking force

Door opening angle (0°–180°)

Door closing angle (180°–10°)

Adjust the closing speed (valve 1) and locking force (valve 2) with the supplied hex key. Turn the nut clockwise to reduce the closing speed. Do not turn the valves more than two turns anticlockwise from the factory setting, this will cause leakage.

Adjusting the opening/closing force

Adjust the opening/closing force with the supplied hex key.

Increase/reduce the force by turning the set screw in the direction shown in the diagram.

The arrester for backward movement prevents the door opening all the way up to the wall. Increase the arresting force by turning the valve clockwise with the supplied hex key. Do not completely close the valve. Do not use this valve if a delay action is used.

A delay action can only be used if the arrester for backward movement is not used. The delay action means that the door moves slowly to 70° . Increase the delay action by turning the valve clockwise. Do not completely close the valve.

Testing

1. Open the door completely and release. The door should close all the way to the frame and lock.
2. Open the door and allow the lock cylinder to rest against the lock plate. The door should lock when you release it.

If the door does not close it may be necessary to increase the closing force, or adjust the alignment of the door in the frame.

Quarterly maintenance

Check that the door closes properly and that all screw unions are tightened. Lubricate the door closer joints and door hinges regularly with a thin oil.

Jula reserves the right to make changes. In the event of problems, please contact our service department. www.jula.com