STA 7400 - Door closer Dormakaba - Free user manual and instructions

Product Type	Door Closer
Brand	Dormakaba
Model	STA 7400
Mounting Type	Surface-mounted
Application	Interior doors, light to medium duty
Door Width Range	Up to 1100 mm (43 in)
Door Weight Range	Up to 80 kg (176 lbs)
Size (Body)	Length: 260 mm, Height: 58 mm, Depth: 19 mm
Weight (Product)	Approx. 1.2 kg (2.6 lbs)
Power Source	Mechanical (no electricity required)
Closing Speed Adjustment	Yes, via hydraulic valve
Latching Action	Adjustable (latch speed and backcheck)
Backcheck	Adjustable
Delayed Action	Optional (model variant)
Hold-open Feature	Not available (standard model)
Operating Temperature	-20°C to +40°C (-4°F to +104°F)
Material	Aluminum alloy body, steel arm
Finish	Silver (standard), other colors optional
Certification	CE, EN 1154
Maintenance	Check screws and oil level annually; no lubrication required
Cleaning	Wipe with a damp cloth; do not use solvents
Safety Notes	Keep fingers clear of moving parts; adjust slowly
Spare Parts Available	Yes (cover, arm, valves, screws)
Repairability	Replaceable seals and valves; serviceable by trained technician

Frequently Asked Questions - STA 7400 Dormakaba

Can the closing speed be adjusted on the Dormakaba STA 7400?

Yes, the closing speed can be adjusted via the hydraulic valve on the end of the closer. Turn clockwise to slow down and counterclockwise to speed up.

What is the maximum door weight for the STA 7400?

The recommended maximum door weight is 80 kg (176 lbs) for standard applications.

Does the STA 7400 have a backcheck feature?

Yes, it has an adjustable backcheck valve that controls the opening speed and prevents the door from being thrown open.

Is the Dormakaba STA 7400 suitable for left-handed and right-handed doors?

Yes, the closer can be mounted on both left and right hand doors. The arm configuration can be reversed.

What type of maintenance does the STA 7400 require?

Check all mounting screws annually for tightness. The closer is factory lubricated and does not require additional lubrication. Ensure the oil level is sufficient.

Can I use the STA 7400 on fire-rated doors?

Yes, the closer is EN 1154 certified and suitable for fire-rated doors when used with compliant brackets.

How do I clean the door closer?

Wipe the housing with a damp cloth. Avoid abrasive cleaners or solvents that may damage the finish.

What is the warranty period for Dormakaba STA 7400?

Dormakaba typically offers a 3-year warranty on mechanical defects. Check local dealer for exact terms.

Where can I find spare parts for the STA 7400?

Spare parts (cover, arm, valves, screws) are available through authorized Dormakaba dealers or online.

Can the STA 7400 be installed on outward-opening doors?

Yes, the closer can be mounted on outward opening doors with appropriate bracket. Ensure the arm track is positioned correctly.

USER MANUAL STA 7400 Dormakaba

STA 7414/7436 AR/ARJ/ARP

Round arm for regular, top jamb, parallel mount

Stainless steel, corrosion resistant

Installation instructions

08280730-03-2021

| EN |

Caution: sex nuts are required for attachment of components to unreinforced doors and to wood or plastic faced composite type fire doors, unless an alternative method is identified in the individual door manufacturer's listings.

When installing main arm attachment observe directions closely.

Confirm dead stop degree prior to door and frame preparations.

Make sure door efficiently operates prior to installing closer.

1 Instructions

1.1 Overall - installation types

Fig.1

Right hand installation Left hand installation ATTENTION!

ATTENTION!

Before you begin, determine installation type AT, ARJ, or ARP and hand of door (RH or LH).

Also, make sure you have the tools listed below.

Tools

Tape, Tape Measure

Center Punch and Hammer

3/16" Slotted Screw Driver

3 Cross-Point Screw Driver

1/2" Box Wrench

10" Adjustable Wrench

List:

7/32, 5/32, 1/8 Drill Bits and Drill

1/4-20 Tap & Holder

5mm hex wrench

1.2 Installing arm STA 7414/7436 AR - Arm round (Regular)/mount pull side door

Fig.2

1.3 Installing arm STA 7414/7436 AR (continued)

Fig.3

Preload main arm (2) by rotating approximately 10 degrees and press rivet head into the retaining pocket on the connecting arm (4).
See template for mounting information

1.4 Installing arm STA 7414/7436 ARJ - Arm Round (top) Jamb/Mount Push Side of Door

Fig.4

1.5 Installing arm STA 7414/7436 ARJ (continued)

Fig.5

3B

Preload main arm (2) by rotating approximately 10 degrees and press rivet head into the retaining pocket on the connecting arm (3).

Note: shown on max. 4" reveal

Technical line drawing of a crane lifting a beam, showing structural components without any text or symbols

Back Plate Mounting

See template for mounting information

1.6 Installing 7414/7436 ARP - Arm Round Parallel/Mount Push Side of Door

Fig.6

1.7 Installing 7414/7436 ARP (continued)

Fig.7

Preload main arm (2) by rotating approximately 45 degrees.
Press main arm hub onto the closer pinion square. Secure tightly with pinion screw (7).

Technical line drawing of a mechanical assembly with no visible text or symbols

Mechanical assembly diagram showing a lever mechanism with rotating components (no text or labels)

Mechanical assembly diagram showing a lever mechanism with no visible text or symbols

Technical line drawing of a mechanical assembly with no visible text or symbols

Back Plate Mounting

See template for mounting information.

Performance Adjustments:

• Be sure closer has appropriate spring power prior to making any closer speed adjustments.
• Door should close in 3 to 6 seconds from 90 degrees.
• Do not back valves out beyond closer casting surface.
• Check closing sweep (S) and latch (L) speed; adjust as necessary.
• Backcheck position will advance approximately 15 degrees by placing backcheck "position" valve in the "on" position (fully clockwise).
• Check delay action (D) function if supplied.
• Bail bearing hinges or pivots should always be used.

REGULAR & TOP JAMB / AR & ARJ

Door Width		Adjuster Full Turns		Spring Size	ULC LABELED UNITS ONLY
Exterior	Interior				Max. Door Weight
		7414	7436
-	2'-6" (762)	-9		2	100
2'-6" (762)	3'-0" (914)	-4	-4	3	125
3'-0" (914)	3'-6" (1067)	0	0	4	150
3'-6" (1067)	4'-0" (1219)		+4	5	200
4'-0" (1219)	-		+8	6	250
ARP - PARALLEL ARM
-	2'-6" (762)	-4	-4	3	100
2'-6" (762)	3'-0" (914)	0	0	4	125
3'-0" (914)	3'-6" (1067)		+4	5	150
3'-6" (1067)	4'-0" (1219)		+8	6	200

1.8 Cover options - COV, FCOV, FMC

Fig.8

Cover screw x2

Note:
Full metal cover (FMC) attached the same manner as a full plastic cover (FCOV) without the cover insert.