3M MT7H7P3E4410-EU Service Manual download pdf (Page 8)

3M™ PELTOR™ LiteCom Plus

Hearing protector with built-in communication radio, level dependent function for ambient listening and option to connect

external equipment.

Read these instructions carefully before use and save them for future reference.

1. COMPONENTS

1:1 Headband (gure A)

(A:1) Headband

(A:2) Headband padding (PVC foil)

(A:3) Headband wire (stainless steel)

(A:4) Two-point fastener (POM)

(A:5) Ear cushion (PVC foil and PUR foam)

(A:6) Attenuation cushion (PUR foam)

(A:7) Cup

(A:8) Microphone for level dependent function for ambient listening

(A:9) Speech microphone (dynamic microphone)

(A:10) On/Off/Mode

(A:11) +

(A:12) –

(A:13) Antenna

(A:14) Speech microphone input (J22)

(A:15) PTT (Push To Talk button) for built-in communication radio

(A:16) PTT auxiliary. (Push To Talk button) for externally connected equipment (A:17)

(A:17) External input/output (e.g. for external communication radio, external telephone)

(A:18) Lithium-ion battery (rechargeable)

1:2 Helmet attachment (gure B)

(B:1) Cup supporting arm (stainless steel)

1:3 Neckband (gure C)

(C:1) Neckband wire (stainless steel)

(C:2) Neckband cover (POX)

2. FITTING AND ADJUSTMENT

Note! Brush aside hair around your ears so the ear cushions (A:5) t snugly.

Spectacle frames should be as thin as possible and t close to the head to minimise acoustic leakage.

2.1 Headband (gure D):

(D:1) Slide out the cups (A:7).Tilt the upper part of the headset outwards to ensure the wires are outside the headband

wires (A:3).

(D:2) Adjust the height of the cups by sliding them up or down while holding the headband in place.

(D:3) The headband should be positioned across the top of your head.

2.2 Helmet attachment (gure E)

(E:1) Insert the helmet attachment in the slot on the helmet and snap it into place.

(E:2) Working mode. To switch the unit from ventilation mode to working mode, press the headband wires inwards until you

hear a click on both sides. Make sure that the cups and the headband wires do not press on the edge of the helmet when

in working mode as this can cause noise leakage.

(E:3) Ventilation mode. Avoid placing the cups against the helmet as this prevents ventilation (E:4).

3. USAGE/FUNCTIONS

3.1 Inserting batteries

Insert the rechargeable battery (ACK081) in the battery compartment. Push down the clamp.

Low battery level is indicated by a voice message: “low battery”, repeated every ve minutes. If the batteries are not

replaced a “battery empty” warning will eventually be heard. The unit will then switch off automatically.

Note! Use following battery in this product: 3M Peltor ACK081 charged with cable 3M Peltor AL2AI connected to a 3M

Peltor FR08 (power supply). Note! Performance may deteriorate as the batteries get low.

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3M MT7H7P3E4410-EU Service Manual Page 8

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