Electrocution Hazard. Contact With Electrically Charged Circuits Could Result In Death Or Serious Injury; Remove All Rings, Watches And Other Jewelry - Genie S-105 Service Manual

June 2011
REV A
Valve Coil Resistance
Specification
Note: The following coil resistance specifications
are at an ambient temperature of 68°F / 20°C. As
valve coil resistance is sensitive to changes in air
temperature, the coil resistance will typically
increase or decrease by 4% for each 18°F / 20°C
that your air temperature increases or decreases
from 68°F / 20°C.
Description
Solenoid valve, 2 position 3 way, 12V DC
(schematic item DA, DO, FB, FC)
Solenoid valve, 3 position 4 way, 12V DC
(schematic item EA, EB, EC, ED)
(before serial number 292)
Solenoid valve, 3 position 4 way, 12V DC
(schematic item EA, EB, EC, ED)
(after serial number 291)
Proportional solenoid valve, 12V DC
(schematic item FG, BG, GD, GH)
Proportional solenoid valve, 12V DC
(schematic item FB, FF, BB, BF)
3 position 4 way D03 valve, 12V DC
(schematic item FD, BD)
Solenoid Valve, 2 position 3 way, 12V DC
(schematic item FQ, FR, BQ, BR)
Solenoid Valve, 2 position 2 way, 12V DC
(schematic item BN, BO)
Solenoid valve, 3 position 4 way 12V
(schematic items ES, FC, BC)
(before serial number 292)
Solenoid valve, 3 position 4 way 12V
(schematic items ES)
(after serial number 291)
Solenoid valve, 2 position 3 way 12V
(schematic items AA)
Part No. 102916
How to Test a Coil Diode
Genie incorporates spike suppressing diodes in all
of its directional valve coils except proportional
valves and those coils with a metal case. Properly
functioning coil diodes protect the electrical circuit
by suppressing voltage spikes. Voltage spikes
naturally occur within a function circuit following the
interruption of electrical current to a coil. Faulty
diodes can fail to protect the electrical system,
resulting in a tripped circuit breaker or component
damage.
Specification
9 
9.8 
1 Test the coil for resistance. Refer to, How to
8.8 
Test a Coil.
2 Connect a 10 resistor to the negative terminal
of a known good 9V DC battery. Connect the
5.4 
other end of the resistor to a terminal on the
coil.
5 
Note: The battery should read 9V DC or more when
measured across the terminals.
4.6 
4.6 
d
7.2 
c
7.2 
7.1 
c
7.2 
S-100 • S-105 • S-120 • S-125
Section 4 • Repair Procedures
Electrocution hazard. Contact with
electrically charged circuits could
result in death or serious injury.
Remove all rings, watches and
other jewelry.
COIL
-
10 W
BATTERY
RESISTOR
a multimeter
b 9V DC battery
c 10 resistor
d coil
Note: Dotted lines in illustration indicate a
reversed connection as specified in
step 6
MANIFOLDS
a
AMMETER
b
9V
b
-
4 - 123