Microtel Series 200 - Manual (Page 23)

IV MAINTENANCE AND TROUBLESHOOTING
In the unlikely event that trouble is suspected with the system, it must be promptly
disconnected from the telephone network, and referred to Microtel or its authorized
service representatives. A service manual detailing troubleshooting procedures is
available to qualified personnel.
Periodically inspect the system internally for any evidence of moisture, blown fuses, or
battery failure as instructed herein.
A. MAINTENANCE
1. Battery
Care
Battery life is dependant upon a number of factors, and will vary depending on the
number of outages, and the age of the battery. A new battery will take no longer than
24 hours to gain a full charge, capable of powering the system through any power
outage up to four hours in length. It should be noted that the LOW BATTERY indicator
is only valid when the 120 vac power is on. If the LOW BATTERY indicator stays on
for more than eight hours, the battery is in need of replacement.
2. Battery
Replacement
The battery is installed at the top of the system, in the battery tray provided as part of
the interior chassis assembly.
It is necessary to remove power from the system by throwing the supply circuit
breaker or removing the power transformer from the power outlet before replacing the
battery.
Refer to Section I.C - Battery Installation for instructions on installing a new battery.
3. Volume
Adjustment
The volume of the system's speech messages delivered to the telephone network is
fixed. The volume of the speech heard through the system speaker is, however,
adjustable by varying the setting of potentiometer R21, located on the main circuit card
in the unit.
4.
Acknowledge Tone Adjustment
R33, located on the system's main board, is the adjustment for the frequency detected
during the acknowledgement of an alarm call. By activating SEQUENCE 55 (see
previous section) the system will deliver a continuous acknowledge tone (* key) to
itself, during which the potentiometer R33 may be set. Center the adjustment by
varying the setting until the Acknowledge LED on the front panel turns on. There is
some amount of hysteresis associated with this detection so the centering of the
component must take into account approaches from each direction. The continuous
tone used for adjustment may be halted by depressing the HALT key after the
adjustment is completed.
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