April 2016
Service Manual
Manifolds
Part No. 139378
Z-30/20N • Z-30/20N RJ • Z-34/22
• Z-34/22N
87
7-4
Valve Coils
How to Test a Coil
A properly functioning coil provides an
electromotive force which operates the solenoid
valve. Critical to normal operation is continuity
within the coil that provides this force field.
Electrocution/burn hazard.
Contact with electrically charged
circuits could result in death or
serious injury. Remove all rings,
watches and other jewelry.
1
Tag and disconnect the wiring from the coil to
be tested.
2
Test the coil resistance.
Coils with 2 terminals:
Connect the leads
from the ohmmeter to the valve coil terminals.
Coils with 1 terminal:
Connect the positive
lead from the ohmmeter to the valve coil
terminal, then connect the negative lead from
the ohmmeter to the internal ring of the valve
coil.
Result: The resistance should be within
specification, plus or minus 30%.
Result: If the resistance is not within
specification, plus or minus 30%, replace the
coil.
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 / 10°C
that your air temperature increases or decreases
from 68°F / 20°C.
Valve Coil Resistance Specification
Description
Specification
Solenoid valve, 3 position 4 way, 20V DC
(schematic items A, J, K, U, V, Y, AA, BB and
CC)
22
Ω
Proportional solenoid valve, 24V DC
(schematic item H)
19.5
Ω
Solenoid valve, N.C. poppet, 20V DC
(schematic item M)
23.5
Ω
Solenoid valve, N.O. poppet, 20V DC
(schematic item P)
23.5
Ω
Summary of Contents for Genie Z-34/22DC
Page 92: ...April 2016 Service Manual Manifolds Part No 139378 Z 30 20N Z 30 20N RJ Z 34 22 Z 34 22N 79 ...
Page 94: ...April 2016 Service Manual Manifolds Part No 139378 Z 30 20N Z 30 20N RJ Z 34 22 Z 34 22N 81 ...
Page 116: ...April 2016 Service Manual 103 Power Cable Wiring Diagram ...
Page 119: ...Service Manual April 2016 106 Drive Contactor Panel Wiring Diagram ...
Page 120: ...April 2016 Service Manual 107 Manifold and Limit Switch Wiring Diagram ...
Page 123: ...Service Manual April 2016 110 LVI BCI Option Wiring Diagram ...
Page 124: ...April 2016 Service Manual 111 Work and Drive Lights Option ...
Page 127: ...Service Manual April 2016 114 CTE Option CE Models ...
Page 128: ...April 2016 Service Manual 115 Charger Interlock Option ...
Page 130: ...April 2016 Service Manual 117 Hydraulic Schematic ...
Page 170: ...April 2016 Service Manual 157 ...
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