Hydraulic Oil Level Switch
The level switch is located on top of the hydraulic reser-
voir under the seat. It has an electrical connector from
the wiring harness with two black, a black/white, and a
orange wire.
1.
Remove electrical connector from the level switch.
1
2.
the reservoir.
Unscrew sender from the cover, and remove it from
2
Note:
Float switch L1 is normally open when the tank
is dry (float down). Float switch L2 is normally closed
when the tank is dry (float down).
5
3.
Position float switch L2 against its lower float stop.
3
4.
Check for continuity between electrical connector
L2
L1
leads associated with the yellow wires.
4
RED
5.
Position float switch L2 against its upper float stop.
YELLOW
L2
L1
6.
Check continuity between electrical connector
leads associated with the yellow wires. There should be
no continuity between connector leads.
YELLOW
RED
Figure 21
7.
Replace switch as necessary. Install switch to hy-
draulic reservoir.
1.
2.
3.
Electrical connector
Level switch
Float switch
4.
5.
Lower float stop
Upper float stop
Bridge Rectifier
Each rectifier (Fig. 22) contains four diodes which form
a single phase bridge rectifier circuit (Fig. 23). The
diodes are used for circuit protection from inductive volt-
age spikes when the alarm relay is deenergized.
2
Testing
The diodes can be individually tested using a digital
multimeter (ohms setting) and the table below.
2
Figure 22
Red Lead (+)
on Terminal
Black Lead (−)
on Terminal
Continuity
YES
NO
1.
Bottom view
2.
Side view
AC1
+
+
AC1
+
AC2
+
YES
NO
AC2
AC1
−
AC1
AC2
−
YES
NO
AC1
−
AC2
−
YES
NO
AC2
Figure 23
Electrical System (Rev. C)
Page 5 − 28
Reelmaster 4000−D
| Categories | Lawn Mower Manual, Sprinkler and Irrigation Manuals, Toro Sprinkler and Irrigation Manuals |
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