Federal Signal Corporation ez1 echo, Installation Instructions Manual

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3. Disconnect the 10-way IDC connector from the keypad. Remove the p-
clip that retains the keypad wire harness.
4. Remove the four M3 fixing screws and remove the encapsulation cham-
ber cover to gain access to the field wiring terminal block.
5. Disconnect and label all field wiring from the twelve-pole terminal. If
small jumpers are fitted, remove and re-use these in the new assembly.
6. Remove locknut from M20 adapter inside the potted PCB enclosure.
7. Remove the six M4 fixing screws that retain the potted PCB assembly to
the molded housing.
8. Remove the potted PCB assembly and replace with new part.
9. Install new part by reversing the above procedure. Be sure to observe
polarity of power/data line when reconnecting field wiring.
10. Test unit for proper operation after replacement is complete.
F. Replacement Parts.
Description Part No.
Headset K137149-01
Stubby Microphone K137164
Gooseneck Microphone, 150mm K137165
Gooseneck Microphone, 330mm K137165-01
Potted Relay Assembly K8601241
Potted PCB Assembly K8601274
Handset, 1m stainless steel cord K8601248
Handset, 3m stainless steel cord K8601248-01
Handset, 1.8m curly cord K8601249
Handset, 10m curly cord K8601249-01
Keypad Assy. K8601267
Keypad Assy., Microphone K8601267-01
III. CERTIFICATION.
Certified to EN55022: 1998 +A1: 2000, EN555024: 1998, EN61000-3-2: 2000, EN61000-
3-3: 1995, and EN60950: 2000
EEx meib IIC T6 (Tamb -35°C to +50°C)
The ATEX certificate (BAS 01 ATEX 2306X) and the product label carry the ATEX
group and category marking:
II 2 G
Where: - indicates compliance with directive 94/9/EC
hexagon symbol, the specific marking of explosion protection
II indicates suitability for use in surface industries
2 indicates suitability for use in a Zone 1 area
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