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MP 4000
MOUNTING
MOUNTING
MOUNTING
MOUNTING
MOUNTING
The MP4000 may be connected to a no-phone-charge
control switch such as the Trigon Model 5000, or
connected to a dedicated telephone line. If connected
to a dedicated telephone line, arrangements must be
made with the local telephone company for installation
of a standard voice-grade telephone line (Touch-tone
or rotary), as close to the unit mounting location as
possible. The telephone company may require the
following information:
FCC Registration No. ... AZ8898-62546-DT-I
Ringer Equivalence ..... 0.8B
Connector .............. Standard USOC Jack RJ-11-C
The unit is designed to be as weather-resistant as
possible; however, we recommend some shelter from
direct rain and sunlight. An overhang is usually
sufficient.
Bolt the backplate to the mounting surface using the
four 5/16" holes in the chassis. Also, feed the wiring
through the access hole in the rear of the backplate. At
this point, the wiring should NOT be energized.
It is critical on units that support a Liquid Crystal
Display, that direct sunlight not be allowed to fall on
the display itself. Like all Liquid Crystal Displays, heat
absorption will temporarily blacken the crystals making
the display unreadable.
If extreme cold is anticipated, a
thermal switch and heater element
may need to be installed inside the
unit’s housing. At about 20 degrees
Fahrenheit, the display will become
sluggish. If a heater element is
installed, be sure to use a bimetal
thermal switch to prevent overheating
during the summer months.
1. Use the enclosed wiring diagram (Fig. 3) for wire
connection information.
2. Do not power any other device from the Trigon’s 12
VAC transformer. If a substitute transformer is used,
be sure it is rated 12 VAC, 20VA, UL Class 2 listed.
The 12 VAC input power wires should be 18AWG,
600V, insulated wire. This should be sufficient for
distances up to 200 feet.
3. Do not energize wires until installation is completed.
4. Ground the unit by attaching a separate 12 AWG
ground wire to the ground location on the terminal
block. This ground wire should go to a grounding
rod or grounded metal conduit.
5. Trigon recommends that an EMI filter (Cornell-
Dubilier Model APF 1021 or equivalent) be mounted
between the 12 VAC transformer output and the unit.
EMI/RFI filters are available from Trigon. Mount
the filter as close to the unit as possible. Ground the
filter to the same point as unit ground.
6. Shielded cables recommended. Ground the shielding
to the same point as the unit and filter. To avoid
ground loops, do not ground the shield at both ends.
Use 600V insulated wire for this installation.
7. Isolate the Telco line from 12 VAC power wires. This
will prevent 60 Hz hum from occurring on the
telephone line. Use 22 AWG wire on Telco line run
distances of up to 2400 feet. Consult the factory for
distances greater than 2400 feet.
8. Power Relays 1 and 2 are dry contact, Form C type,
rated for 5 AMPS @ 30 VDC/ 250VAC.
Figure 2
9.35"
7.35 "
1.00 "
10.25"
.312" dia.
4 places
1.00" dia.
1.00"
1.00"
2.40"
12.25"
9.35"
12.25"
.812" dia.
2.35"
2.00"
2.70"
WIRING
WIRING
WIRING
WIRING
WIRING
