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Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
P. 540-563-2000
F. 540-362-9800
www.valcom.com
Troubleshooting
VERY IMPORTANT:
INSTALL, POWER, AND SET YOUR MASTER CLOCK OR REPEATER BEFORE POWERING THE SECONDARY
WIRELESS CLOCKS
A Valcom Master Clock and any Repeaters must be installed, powered, and set up BEFORE you attempt to
set up a wireless clock system. If the Master Clock and Repeaters are not properly installed and powered, the
secondary clocks will not synchronize.
The clock is attached to the power source, but it is not running. What should I do?
a. Make sure that the movement’s gearbox pin is removed.
b. If a battery-powered model, check to be sure that the battery has been properly inserted into the
battery pack and that the battery has the proper voltage.
c. If a locally-powered model, check to make sure that the wiring in the connector complies with the
installation instructions. This information is usually included in step #2.
d. Make sure that the power supply is an ISOLATED power supply if using a 24 volt model.
e. Measure the voltage between the power (black) wire and the neutral (white) wire. The voltage
between the white and black wires should measure 105-126 volts AC in the 115 volt model, or 21.5-
26.5 volts DC in the 24 volt model.
Failure to follow instructions c and d can result in a blown fuse.
The clock is not showing the right time. What should I do?
Perform Diagnostic #1 to check the last time that a signal was received. Alternately, perform Diagnostic #3
to perform a mechanical test.
How can it be determined if the clock is receiving a good signal?
Perform Diagnostic #2.
The clock is in a location with a poor signal. What should I do?
You have two options:
1. Install a repeater or another analog clock nearby.
2. Install a locally-powered clock instead of a battery clock nearby.
The clock is in a location with no signal. What do I do?
Install a signal repeater or add more secondary clocks in a location between clocks that are receiving the
signal and clocks that are not.
The clock is not receiving a communication signal from the master clock, despite the fact that
other nearby clocks are receiving a signal. What should I do?
First, check the battery voltage if the clock is battery powered. Low battery voltage may prevent the clock
from operating correctly.
