3100 Series Door Closer Technical Information

Gainsborough 3100 Series Hydraulic Door Closer. Compact design with minimal projection, for internal or external doors. Standard, backcheck with regular and parallel arm installation and power adjustment.

Adjustable Arm and Bracket
• For jamb installation (timber or metal).
• Closing power adjustment bracket
• 30mm maximum (positioning of arm) adjustment (STD installation).
• 70mm maximum adjustment (top jamb installation).
• Parallel arm installation, bracket supplied as standard.

Latching Speed Adjustment Valve
• Captive latching speed valve for fine tuning of latch closing speed. Independent of closing speed.
• Latching range 0-15 degrees.

Closing Speed Adjustment Valve
• Captive closing speed valve for adjustment of door closing speed fast-slow.
• Closing range 15 - 180 degrees.

Backcheck Valve
• Adjustable backcheck captive valve for cushioning effect upon opening of door.
• Standard on whole range of 3100 Series.
• Backcheck range 70-180 degrees

Power Adjustment Screw
Captive screw for adjustment for increasing (clockwise) and decreasing (anti-clockwise turn), of closing power (not speed) of the unit.
Closing power 2-4 (see chart)

Mechanism and Case
• Rack and pinion hydraulic controlled piston, power adjustable (2-4), high purity aluminium body
• Reversible for left or right-handed doors.
• Backcheck standard in all 3100 Series
• Approved for fire door assemblies in accordance with Aust. Std. AS 1905.1.1997 - Fire Resistant Door Sets.

Spindle Cap
• Spindle Cap supplied to cover spindle exposed to view, colour complementing closer body, arm and dress plate.

Model Selection Table (maximum door width dimension in mm)

Applications
Standard installation.
Top jamb installation.
Parallel arm installation
Side arm installation
Drop plate installation
(refer accessories)

Options

Standard
3100 Regular/Parallel Arm
3100GLD Regular/Parallel Arm Gold

Hold Open
3100H Regular Arm Hold Open
3100PH Parallel Arm Hold Open
3100DA Regular/Parallel Arm Delayed Action

Side Arm
3100SR Side Arm

Accessories
3100/PAB Parallel Arm Bracket
3100/HORA Regular Arm Hold Open
3100/HOPA Parallel Arm Hold Open
3100/DP Drop Plate
3100/SA Slide Arm Assembly

Finishes
Supplied Standard in silver finish
Other finishes available on request.

3100 Series Door Closer with cover plate
Optional cover plate with matching mounting bracket and arm assembly.

Specific door closers can also be ordered with cover plate and matching mounting bracket
and arm assembly, available in Satin Stainless Steel (SS)*, Polished Stainless Steel (PS)* or
Polished Brass (PB).

(Hold open versions with cover plate are only available in SS finish at this stage).

Satin Stainless Steel cover is supplied with silver mounting bracket and arm assembly. Polished Stainless Steel cover is supplied with chrome plated mounting bracket and arm assembly.

Cover plate dimensions
Length x Width x Depth
240 x 75 x 42mm
Fixed mounting bracket at the top by two (2) metal threads as supplied.

To order, add finish code to relevant catalogue number eg. 3100 SS – Regular arm and Parallel bracket, Adjustable backcheck with polished stainless steel cover plate.

*Satin Stainless Steel cover is supplied with silver mounting bracket and arm assembly. Polished Stainless Steel cover is supplied with chrome plated mounting bracket and arm assembly.