Adjustable Concealed Door Closer (Transom Overhead)

Jun 17, 2024

The Alpro PRO50 Variable Strength concealed overhead door closer offers a flexible door control solution for single or double action aluminium doors. Designed for concealment within the transom header, the adjustable spring mechanism provides three selectable power settings, allowing a single closer to accommodate a range of door sizes and weights. Dual adjustable closing speeds ensure smooth, controlled operation, while 90° hold open and no hold open options are available. Each closer is supplied complete with fixing pack, bottom pivot and arm.

Standard spindle length is 12mm, with 17mm, 22mm and 28mm extended spindle versions available. Replacement components are also available for retrofit installations and maintenance.

Features Include

Dual Closing Speed
Adjustable spring strength
Retrofit Replacement Items Available
3 Year Guarantee

Image of Transom closer variable strength product

Image of Concealed Door Closer (Transom Overhead) fittings

The closer comes complete with its own fixing pack , 51A4 standard pivot and comprehensive fixing instructions.
Various arms and spindle lengths are available on request.

Dimensions
293mm x 90mm

Concealed Thickness
37mm

Standard Spindle Length
12mm
Also available in 17, 22 and 28mm

Maximum Door Width
Light spring – under 750mm (size 1)
Medium spring – 751mm to 950mm (size 2)
Heavy spring – 951mm to 1150mm (size 3)

Maximum Door Weight
100kg – standard pivot
120kg – heavy duty pivot

Maximum Door Height
2540mm

Closing Speed Dual
Initial closing speed is factory preset.
Final closing speed is full adjustable after installation.

Lubrication
Stable hydraulic fluid suitable for most climatic conditions and constant lubrication

Function
Built in positive back stop and optional 90˚ hold open position

Adjustable Spring Strength

Variable Power
Enables the closer to suit each opening, meaning the door closes correctly while keeping the opening force down to a minimum.

Side Loading Option (includes 51A2 Arm, 51A4 Pivot & fixings)

Code	Description
510900T1-U	Variable strength – no hold open
510990T1-U	Variable strength – 90^o hold open

End Loading Option (Includes 51A3 Arm, 51A4 Pivot & fixings)

Code	Description
510900T2-U	Variable strength – no hold open
510990T2-U	Variable strength – 90^o hold open

Short Side Loading Option (Includes 51A1 Arm, 51A4 Pivot & fixings)

Code	Description
510900T3-U	Variable strength – no hold open
510990T3-U	Variable strength – 90^o hold open

Accessories

Code	Description
51A1	Special top arm assembly – short side load
51A2	Side load top arm assembly
51A3	End load top assembly – use for round nose stiles
51A4	Standard bottom pivot assembly
51A5	‘F’ bracket, closing jamb/header bar bracket including fixings
51A10	Heavy duty bottom pivot assembly – maximum weight 120kg
FIX-DUMMY	‘F’ bracket kit standard
ALPBADGE	Alpro name badge

Notes

Variable: If replacing a standard closer with variable strength the bracket highlighted in blue on the Closer Preparation Details diagram will need to be changed.
This is supplied with the variable strength closer.

– Trade pack quantity for all closer types is 4
– For 17mm extended spindle change code to X-U i.e. 510190T1X-U
– For 22mm extended spindle change code to X-U-22 i.e. 510190T1X-U-22
– For 28mm extended spindle change code to X-U-28 i.e. 510190T1X-U-28

PRO50 Transom Door Adjustable Closer Datasheet

PRO50 Transom Concealed Door Closer Instructions

PRO50 Variable Strength Transom Closer Instructions

FAQs

I need some help with an install, who can I speak to for help?

We are working hard to update our website with as much information as possible so this is the best place to look for 24/7 support. If you cannot find the answer you require, please give us a call on 01202 676262, option 3.

What closers are suitable for use on glass doors?

Our closers are suitable for glass door installation. Depending on the weight of the door would determine the type but usually a light duty is needed.

What is the opening and closing force on your light duty?

The opening is 24Nm and the closing 15Nm.

What is the opening and closing force on your medium duty?

The opening is 38Nm and the closing 23Nm.

What is the opening and closing force on your heavy duty?

The opening is 44Nm and the closing 28Nm.

What is the difference in you arm options?

The arm you need depend on whether the door is side or end loaded. For anti finger trap doors you will need to use either the short side load or end load arm.

What is the maximum door weight these closers can be fitted to?

With a heavy duty bottom pivot, our closers can be used on doors up to 120 KG

Do Alpro closers operate to 180 degree?

Yes, the Alpro closers are double action.

Do the closers come with a back check?

No, this is not an option on Alpro closers.

I need a closer with less than 22.5Nm opening force between 0-30 degrees, do you have one suitable?

Yes, you can use our DDA closer if the door size is 760mm-1021mm.

What is the maximum width and height door sash that the dummy closers can go up to?

Its based on door weight. 100kg with standard pivot or 120kg with heavy duty pivot. With it being a dummy closer the door width and height do not matter it is based on the weight.

I am looking for an EN1/EN2/EN3 closer, is this something you offer?

Yes, Alpro closers would be 1 for light, 2 for medium and 3 for heavy.

The door is opening instead of closing, how do I fix this?

Take the door off, crank the closer to 90 degrees before putting the door back on.

How do I stop the door slamming closed?

Adjust the closer by using the latching and closing adjustment screws, if this does not work the closer may have previously been over adjusted and now needs replacing.

Why does my closer have no strength?

It is likely you have a dummy closer. These have open chambers inside and free flowing oil; designed for use on automatic doors.

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