Toro Z Master 8000 Series User manual

Introduction
Due to the unpredictable magnitude of high voltage transients caused by lightning, surge protection devices in general can-
not control all power surge conditions. However, when properly installed and grounded, the surge protection module includ-
ed in this kit will provide the maximum surge protection possible for the Network 8000 communication modem.
Installing the surge protection kit is relatively easy due to its modular design and plug-in wiring harness. To determine the
tools and additional materials required to complete the installation, please read through the instructions completely prior
to starting the installation procedure.
Installation Procedure
Note 1: Due to the variations in controller rear plate
configuration, specific location for the surge protec-
tion module is not given. Suggested areas for instal-
lation (represented by dashed lines) are shown in
Figure 1. If no space is available on the rear plate,
attach module support bracket to cabinet side wall
using Velcro strips (not supplied). Without rear plate
contact, ground lug/ wire connection is essential
for proper operation of surge protection compo-
nents.
1. Unlock and remove pedestal cabinet door(s).
2. Using surge protection module support bracket
(91-1427) as a template, mark location of two
mounting screw holes on controller rear plate
assembly. See Figure 1.
3. Center punch and drill two screw holes in rear
plate using a #32 (3mm) drill bit.
4. Secure support bracket to rear plate assembly
with two self tapping screws provided.
6. Secure surge protection module to support brack-
et using four machine screws provided.
7. Loosen nut securing ground lug on surge protec-
tion PCB. Rotate ground lug clockwise 90° and
retighten. See Figure 2.
8. Route communication cable wires to surge pro-
tection module and connect to terminals 1 –4 as
shown in Figure 2.
Note 2: Comm cable wires are shown separated for
illustration clarity. In actual installation, comm wire
pairs should remain twisted.
9. Connect surge protection module to satellite
modem PCB using shielded cable assembly pro-
vided as shown in Figure 2. Plug is correctly ori-
ented in surge protection PCB receptacle as
follows: Black wire to “Gray”, White wire to
“Yellow” and Drain wire to “Gnd”.
II
IInn nnss sstt ttaa aall llll llaa aatt ttii iioo oonn nn II IInn nnss sstt ttrr rruu uucc cctt ttii iioo oonn nnss ss
Network 8000 Satellite
Communication Surge Protection Kit 91-1453
91-1427
R
1 2 3 4
12
Figure 1
Figure 2
Shielded
Cable Assy.
Ground Lug
Rotated 90°
Support
Bracket
Modem
See Note 2
See Note 1
See Note 1
WARNING: DISCONNECT POWER TO CONTROLLER AT SOURCE. FAILURE TO COMPLY MAY RESULT IN SERIOUS
INJURY AND/OR EQUIPMENT DAMAGE.
AVERTISSEMENT: DEBANCHER LE SECTEUR ARRIVANT AU PROGRAMMATEUR. SI L' ON NE SE CONFORME
SERIEUX DOMMAGES CORPORELS ET / OU MATERIALS.
WARNUNG: TRENNEN SIE DIE STROMVERSORGUNG ZUM STEUERGERÄT AB. ANDERNFALLS KANN ES ZU
ERNSTHAFTEN VERLETZUNGEN UND / ODER SCHÄDEN AN DEN GERÄTEN KOMMEN.

Installing Earth Ground
Low resistance earth ground conductors must
be installed and connected to the controller
cabinet ground lug and the surge protection
module ground lug for proper operation of the
surge protection devices. A ground conductor
(or conductors) with a total resistance of 10
Ohms or less must be installed within 12 feet
(3.6 m) of the surge protection devices. Use
one or both of the following recommended
methods to achieve proper grounding:
•Drive one or more 5/8 in. (16 mm) by 8 ft.
(2.5 m) copper clad steel rods into well
moistened soil within12 ft. (3.6 m) of con-
troller.
•Bury one or more 1/8 in. x 1 ft. x 1-1/2 ft.
(3 mm x 30.5 cm x 46 cm) copper plates in
well compacted, moistened soil within 12 ft.
(3.6 m) of controller.
1. Using an earth resistance testing instru-
ment,* measure resistance of ground
conductor(s). To calculate total resis-
tance (Rt) of multiple ground conduc-
tors, use the following formula:
2. Clamp two separate lengths of 6 AWG
non-insulated copper wire to ground con-
ductor(s). Route wires into pedestal
through field wire conduit. Connect one
wire to controller cabinet ground lug and
to surge protection module ground lug as
shown in Figure 3.
* Megger Direct Reading Earth Resistance
Testing Instrument, James G. Biddle
Company, Plymouth Meeting, PA, U.S.A.
Note: Ground wires should be routed to
ground lugs in the most direct route using
the slightest bends possible. In addition, the
ground wires should not be touching other
wires, components or pedestal surfaces.
Rt = 1.1 (Rm/n)
where: Rm = average conductor resistance
n = number of ground conductors
R
1 2 3 4
Less Than 12 ft. (3.6 m)
8 ft. (2.5 m)
Figure 3
Valve Cover
(Optional)
P/N 850-00
Ground
Conductor
© 1992 THE TORO COMPANY
Irrigation Division
P.O. Box 489
Riverside, California 92502
Printed in U.S.A.
PRINTING DATE
JULY 1992
REVISION - A FORM NO.
368-0011