How many cycles must a door closer endure during testing?

It must withstand 500,000 continuous operating cycles without showing signs of defect or hydraulic fluid leakage.

What is the acceptable range for the adjustable closing time?

The regulatory valve should allow the closing time to be adjusted anywhere between 3 to 20 seconds.

How is the correct size of a door closer determined?

It is determined primarily by the weight of the door shutter (e.g., Size 2 for up to 40 kg, Size 3 for up to 60 kg) as per Table 1.

IS 3564

: 1995

Hydraulically Regulated Door Closers -Specification

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This standard specifies the requirements for materials, dimensions, manufacture, performance, and testing of exposed type hydraulically regulated door closers used in buildings.

Hydraulically Regulated Door Closers -Specification

Quick Reference Values

minimum endurance test cycles500,000 cycles

adjustable closing time range3 to 20 seconds

size 1 max door weight25 kg

size 2 max door weight40 kg

size 3 max door weight60 kg

size 4 max door weight80 kg

Practical Notes

Always select the closer size based on both the door weight and width; undersized closers will fail prematurely and fail to latch the door.

Ensure the closer arm is installed at the correct geometry (templating) for optimal leverage and closing force.

Regularly check for hydraulic fluid leakage around the spindle, which is the most common indicator of seal failure.