7
Section 3 - Installation
3.1
Mounting the Receiver
Install the MLR2E in a closed 19" / 48cm rack or cabi-
net with a locking rear access door. Cover all unused
spaces with blank metal plates. The LCD screens on
the receiver are designed to be viewed below eye
level. If the unit must be mounted where the screens
are above eye level, angle the unit downwards to
improve visibility. The following items can be supplied
for a complete installation:
3.1.1 Stand-up Unit (61.25" / 1.55cm tall up to 30
telephone lines)
Part # MLR2-CL
• Rack
• Door with lock and ventilation
• Blank plates 21" / 53cm (2)
• Blank plate 5.25" / 13.3cm (3)
• Screws
• Washers
• Clipnuts
• FROST 16V/175VA transformer
P/N FT3304
• AC utility box
• AC cable clamps (2)
• 8' / 2.4m battery cables
• 3-Gauge conductor AC cable
• Secondary non-replaceable fuse, 15A, 125 V
AC
NOTE:
If 30 telephone lines are not used, cover
each unused location with a blank plate.
3.1.2 Desk-mount Unit (28" / 71cm tall up to 14
telephone lines)
Part # MLR2-CM
• Rack
• Louvered door back plate
• Blank Plate 1.75" / 4.45cm
• Back Plate 7" / 17.8cm
• Blank Plates 5.25 (4)
• Screws
• Washers
• Clipnuts
• FROST 16V/175VA
• AC utility box
• AC cable clamp for 3/8" / 1cm cable
• 8' / 2.4m battery cable
• 18 gauge 3-conductor AC cable
• Secondary non-replaceable fuse, 15A, 125 V
AC
NOTE:
If 18 telephone lines are not used, cover
each unused location with a blank plate.
3.2
Printer Connections
Connect the parallel printer to the MLR2E printer out-
put port using a standard parallel printer cable.
For UL Listed applications, the following UL Listed
printers can be used with the MLR2E:
• Sur-Gard CPU-1150
• Sur-Gard CPU DMP-206
• DMP SCS-PTR
IMPORTANT:
Do not use a printer cable that has
only 1 common ground wire.
3.3
Computer Connections
Connect the computer to the MLR2E RS-232 port
using a serial cable to COM1.
IMPORTANT: Do not
use a null modem cable.
Figure 6, MLR2E COM1/COM2 Automation Computer Con-
nection
3.4
Telephone Line Connections
With 6-pin modular cables, connect each line module
jack (line 1 or 2) to its corresponding telephone line.
3.5
Grounding
For maximum resistance to static and electrical noise,
the 19"/48cm rack frame should be connected to
earth ground through the AC utility box.
3.6
Power Supply
Ensure that all electrical connections are made cor-
rectly. After verifying all connections, connect the RED
and BLACK leads to a 12V
DC
sealed rechargeable bat-
tery. Be sure to observe polarity when connecting the
battery. When the battery is connected, test the sys-
tem under battery power only.
CAUTION: Connect-
ing a positive (+) terminal to a negative (-) terminal
may cause a fire and possibly serious personal
harm.
For 4-hour standby a 12-volt 35 Ah rechargeable bat-
tery should be used in conjunction with an engine-
driven power generator.
3.7
Battery Charging Current
The maximum battery charging current is factory set at
1A
.
Receiver RS-232
25-pin connector
Computer RS-232
25-pin connector
Receiver RS-232
9-pin connector
1
1
1
2
2
3
3
3
2
7
7
5
Summary of Contents for MLR2E
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