Servicing the Convergence Network System
57
Installation and Maintenance Instructions
Federal Signal www.fedsig.com
Reinstalling the Control Head
To reinstall the control head in the vehicle:
1. Reconnect the cables and wiring to the control head.
2. Secure the rear mounting bracket to the control head base with the two Phillips
#6-32 by 1/4-inch screws. See Figure 38 on page 55.
3. Secure the rear mounting bracket to the mounting surface bracket with the two
1/4-inch external-tooth lock washers and 1/4"-20 by 3/4-inch hinge screws. See
Servicing the Siren Amplifier/Relay Module
Servicing the siren amplifier includes replacing damaged cables or external wiring,
external fuses and the red and the plastic terminal insulators. The siren amplifier/
relay module has 13 externally mounted mini-blade fuses for the siren, horn-ring
circuit, SignalMaster
™
, and auxiliary relays have LEDs that glow when the fuse fails.
For detail on the components the fuses protect, see Figures 27 and 28 on page
47. Replacements fuses are obtainable at auto parts stores, from your local
distributor. For information on ordering replacement parts from Federal Signal, see
page 60.
Tools needed:
• 7/16-inch nut driver
• Small needle-nose pliers
• Flat-head screwdriver
Uninstalling the Siren Amplifier/Relay Module
To uninstall the siren amplifier/relay module from the vehicle:
1. Remove and retain the installer-supplied #10 hardware.
2. To access the power connections, use a large screwdriver to pry open the
covers on the red and black insulators.
3. Use a 7/16-inch nut driver to remove the 1/4"-20 Keps
®
nuts securing the power
cables to the terminals. Retain the two Keps nuts, the four external-tooth lock
washers, and two flat washers.
4. Disconnect the Convergence network cable, serial cables and wiring from the
rear of the siren amplifier/relay module.
Replacing an External Fuse
To replace a fuse:
1. Investigate and correct the cause of the fuse failure.
2. Remove a fuse by pulling it out with a pair of needle-nose pliers. Be careful not
to bend the blades.
3. Insert the blades of the new fuse of the same type and amperage into the
appropriate fuse holder beneath the surface of the housing. Make sure that it is
