CRL Lock Installation & Repair 4

Question 1

How many operational cycles must an ANSI/BHMA Grade 1 bored lock withstand?

Accepted Answer

800,000

Answer

Grade 1 requires 800,000 cycles, versus 400,000 for Grade 2 and 200,000 for Grade 3.

Question 2

What does an electric strike designated fail-secure do on power loss?

Accepted Answer

Remains locked

Answer

Fail-secure strikes need power to unlock, so they stay locked when power fails.

Question 3

A magnetic lock is typically what type during a power failure?

Accepted Answer

Fail-safe, releasing the door

Answer

Maglocks need power to hold, so they release when power is lost.

Question 4

Which door closer adjustment controls the final few degrees of closing?

Accepted Answer

Latch speed valve

Answer

The latch speed valve governs the final closing arc so the latch engages.

Question 5

Under ADA guidelines, operable hardware should be mounted between what heights?

Accepted Answer

34 and 48 inches

Answer

ADA specifies operable parts between 34 and 48 inches above the floor.

CRL - Certified Registered Locksmith Practice Test