MERak
MMk-656
Compact Emergency Telephone for Lifts
Rev. M1.5 – S2.5
©
MERak. All rights reserved
Instruction and Connection Manual
8 of 20
of necessity, without the need to use the dedicated car alarm telephones. If communication cannot be
established, the set will pass to generating a car alarm call.
The entire call process according to the different programmable parameters is given in detail in
the annex to the
Manual for Programming in Voice Mode
available on the MERak website
www.merakeurope.com.
4.
PERIODIC TEST CALL (EN 81-28)
The European standard EN 81-28 demands that the set should make a status verification call at
least every three days.
To this end, the MMk-656 has been provided with two memory registers (06 and 07), where the
numbers of the servers which log the test calls can be stored. Just as with the alarm numbers, it tries
with the first number in the list, and if this is not successful, it tries with the next number.
The factory default frequency of the call is every 3 days.
To avoid repeated calls, with the corresponding expense, arising from an incorrectly
programmed test number or the time interval between calls being too short, it has been so
programmed that when the equipment initiates a test call, it configures itself to make the following
call 24 hours later, but should communication be correctly established with the server which attends
test calls, the set will reconfigure itself again to the test call frequency defined in the database.
5.
CLEARING AN ALARM (EN 81-28)
The European standard EN 81-28 requires that when an alarm is raised, the emergency phone
should remain in a special state ("awaiting alarm clearance") until the rescue of the persons trapped
has taken place and the maintainer of the installation confirms some action to clear the alarm, and so
returns the phone to its ready state and clears the alarm at the centre.
The MMk-656 has three methods to clear the alarm:
By a switch on the pair of terminals
J1
SOS/EOA
and
J1 SOS/EOA
.
By a programming command by intercom or external call
*99#
.
By a switch connected to the terminals of the audio module (see instructions on MERak
website www.merakeurope.com).
Until the alarm has been cleared, the equipment will remain in a special state and will indicate
this through its alarm progress indicator LEDs: see section 9
6.
ALARM FILTERING (EN 81-28)
The European standard EN 81-28 states that the emergency telephone should be capable, in the
event that the control system detects that the car is not capable of trapping persons (for instance, at
