Pub. 42004-456B
Model 352-701 and 352-703 Division 1 VoIP Telephones
Page 12 of 20
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Attach the Front Cover
After all adjustments have been completed, inspect and clean the machined flange joint surfaces of both
the cover and box. Surfaces must be smooth, free of nicks, scratches dirt or any foreign particle build-up
that would prevent a proper seal. Surfaces must seat fully against each other to provide a proper
explosion-proof joint. Clean surfaces by wiping with a clean lint-free cloth.
Apply a light coat of Killark “LUBG” lubricant to flange surfaces and close the cover. Install and tighten
all cover bolts to 30 ft-lbs. Make certain no cover bolts are omitted. Use only those bolts supplied with
the enclosure.
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OTE
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Refer to the Killark Installation, Operation, and Maintenance Data Sheet enclosed with the unit
for additional information.
External Controls
Handset Receiver Volume Control
A push-button switch has been provided on the front cover of the telephone for adjustment of the handset
receiver volume. The receiver volume adjustment operates as follows:
The initial direction of the volume (increase or decrease) is determined by prior activity. The initial
direction will be opposite of the previous activity.
Changing the direction is accomplished by allowing a period of inactivity (greater than 1 second).
Example – Increasing Volume: Depress the volume switch. If the receiver volume begins to decrease,
wait at least 1 second and depress the volume switch again. The volume will begin to increase. When the
desired volume is achieved, do not depress the switch.
Maximum (Handset Receiver) Level Remote Control
The receiver volume level can be controlled remotely by changing the setting in the configuration file.
Refer to the “Handset Volume Setting in the Audio Setting” section in Pub. 42004-396 for programming
instructions.
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OTE
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The handset receiver volume setting using PB1 should be set for the maximum volume (factory
default) prior to adjusting the volume remotely.
