Section 9 - Testing - Velocity VDOT-H2 Instruction Manual

8.4 Tamper resistance feature
The VDOT-UB series, VDOT-S6 Base, and VDOT-STB series of smoke/heat detector mounting bases have a
tamper- resist feature that works in conjunction with the heat detectors. When this feature is enabled, the heat
detectors cannot be removed from the base without the use of a small hexagonal wrench. To avoid unauthorized
removal of the heat detector, turn the locking screw in the mounting base counterclockwise until the screw extends
out about 4 mm (3/16 in.) from the rim of the base, as shown in the Figure 15.
Note: If the detector is installed on a high ceiling where a tool (ladder, etc.) is needed, it is not recommended to
use the locking screw.
Section 9 – TESTING
Notes: • Before testing, notify the proper authorities that the system is undergoing maintenance, and will
temporarily be out of service.
• Disable the system to prevent unwanted alarms.
• All sensors must be tested after installation and periodically thereafter.
• Testing methods must satisfy the Authority Having Jurisdiction (AHJ).
• When carrying out site testing of the detector, the control panel must be set to "One Man Walk Test"
mode prior to the test.
Sensors offer maximum performance when tested and maintained in compliance with NFPA 72. The sensor may
be tested in the following ways:
Direct Heat Method (Hair dryer of 1000 – 1500 watts )
A.
1. From the side of the detector, direct the heat toward the sensor. Hold the heat source about 15 cm (6 in.)
away to prevent damage to the cover during testing.
2. The red LEDs on the detector should light when the temperature at the heat detector reaches the alarm
set point. If the red LED indicator fails to light, check the power to the detector and the wiring in the
detector base.
3. After the detector has given the alarm condition, the detector automatically is reset by the control panel.
The detector can also be reset at the control panel manually. Detectors that fail these tests should be
cleaned as described under MAINTENANCE Section and retested. If the detectors still fail these tests
they should be returned for repair.
Figure 15：Position of the locking screw to lock the detector
15
GLT-299-7-2(3) Rev.0
Mar 23, 2018