2N Lift emergency phone 2N LiftNet - Manual, 1446 v1.8.3 - Manual (Page 21)

PSTN Central Unit 2.1
21
Before You Start
CU installation conditions
 The CU is not designed for outdoor applications.
 Do not mount the CU onto vibration-producing machines.
 Install the CU vertically to allow air flow for cooling purposes (never cover the
CU with any cloth or install it in another closed box).
 You may install the CU into the lift switching board unless the temperature
exceeds the acceptable limit.
 The CU may be operated in the lying position on a desk at the room
temperature of up to 25 °C.
Product Completeness Check
Check the product for completeness before installation please:
 1 central unit
 1 terminal – inserted on the bus connector
 1 accumulator battery isolation tape is present (sticking out of the cover)
 1 power supply adapter conforming 12V DC to the local power network
requirements
 1 telephone cable with RJ terminals
 2 wall dowels
 2 dowel screws
 1 manual, either in the printed or CD format
 warranty certificate
Checking of Accumulators
Instructions
1. Completely pull out the tape that sticks out of one opening on the back side of
the CU. This tape protects the inserted accumulators against discharging
during storage. With this tape it is possible to store the product (if supplied
including batteries) ½ year since the shipping date, which is indicated on the
packaging. After this period the claims, if any, regarding the battery warranty
cannot be accepted.
2. Do not connect anything to the CU and if any control lamps light up after the
tape has been removed wait a few seconds until they turn off.
3. Now watch the “power” control lamp on the CU carefully for a few seconds (not
in direct sunlight because the flashing is not strong):