6
Optional: A 1K, 1W resistor is included in a kit with each intercom. Installing the
resistor across the audio lines helps to reduce noise in certain environments. Only
one resistor needs to be installed on the lines for any system installation.
See Figures 1 through 19 starting on page 7 for typical intercom connections and
wiring information.
F. Service
Federal Signal will service your equipment or provide technical assistance with any
problems that cannot be handled locally.
Any units returned to Atkinson Dynamics for service, inspection, or repair must be
accompanied by a Return Material Authorization. This R.M.A can be obtained only
from the factory by calling (708) 534‑4756 or (877) 289‑3246.
Please give a brief explanation of the service requested or the nature of the
malfunction.
Address all communications and shipments to:
ATKINSON DYNAMICS
Service Department
2645 Federal Signal Drive
University Park, IL 60484‑3167
2. Replacement Parts.
Replace fuse with GMC‑1/2 only. DO NOT substitute.
Description
Part Number
Cover plate gasket
K8590013B
Knob, volume control
K141A129A
Microphone assembly
K137144A
PC Board, 12V, AD‑26
K2001878B
PC Board, 12V, AD‑26‑8‑M44
K2001896B
PC Board, 240VAC
K2001875‑01
PC Board, 120 Vac, ‑1 models
K2001885B
PC Board, 240 Vac, ‑1 models
K2001885B‑01
Kit, potentiometer with on/off switch
K8590236A
Kit, push button switch (12/24 V models)
K8590242A
Kit, push button switch (120/240 V models)
K8590241A
Resistor, 1K, 1W
K101216A
Rubber boot, push button switch
K288697A
Rubber boot, toggle switch
K288696
Rubber boot, volume control
K288A542A
Kit, potentiometer, 10K ohm
K8590237A
Kit, toggle switch, 3PDT (AD‑27A‑M34 and AD‑27A‑4‑M34 only) K122342A
Kit, toggle switch, 3PDT
K8590239B
Kit, pushbutton switch, 3PDT
K8590288A
Kit, potentiometer, 1K ohm
K8590289A
Voice Coil/Diaphragm Assembly, Series C
K8590181A