204038
Rev. B, 4/12/08
© 2008, THE STANLEY WORKS. ALL RIGHTS RESERVED.
10 of 17
3.8.4
If necessary, ADJUST the 4-contact switch block assemblies and ENSURE proper
alignment with the center contact plate.
3.9
Troubleshooting the Delayed Egress System
3.9.1
Refer to Table 3-3 for a listing of symptoms and remedies.
NOTE
The following two conditions describe proper system operation:
1. Door is in CLOSED/LOCKED. The buzzer is OFF. The shear locks are energized. K1 LED is OFF. K2
LED is ON.
2. Door is in AUTOMATIC. The buzzer is OFF. The shear locks are de-energized. K1 LED is ON. K2
LED is OFF.
Table 3-3. Symptoms and Remedy
Symptom Remedy
Door set for CLOSED/LOCKED and door gets to
closed position. Delayed egress starts without
pressing push bar. The dE indication is displayed on
MC521. The buzzer turns ON. K2 LED is OFF. K1
LED is ON. And shear locks de-energize after 15/30
seconds.
Check connections from push bar switches to two-
contact transfer contacts to quad transfer contacts to
K2 coil.
Door set for CLOSED/LOCKED in closed position.
Shear locks energize, but door panel can break out.
Adjustment is required on armature. Set gap to
between 0.080
″
and 0.120
″
.
Figure 6. Adjusting the Shear Lock Assembly
ARMATURE
MAGNET
MIN. GAP
USE SUPPLIED KEY WRENCH TO ADJUST ARMATURE PLATE
TO APPROXIMATELY 0.080" to 0.120" OF GAP BETWEEN MAGNET
SURFACE.
DE003
