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Service and Repair Manual
September 2016
Manifolds
60
Z-40/23N, Z-40/23N RJ
Part No. 1268528
7-5
Valve Coils
How to Test a Coil
A properly functioning coil provides an
electromagnetic force which operates the solenoid
valve. Critical to normal operation is continuity
within the coil. Zero resistance or infinite resistance
indicates the coil has failed.
Since coil resistance is sensitive to temperature,
resistance values outside specification can
produce erratic operation. When coil resistance
decreases below specification, amperage
increases. As re
sistance rises above
sp
ecification, voltage increases.
While valves may operate when coil
resistance is
outside
specification, maintaining coils within
specification will help ensure proper valve function
over a wide range of operating temperatures.
Note: If the machine has been in operation, allow
the coil to cool at least 3 hours before performing
this test.
1 Tag and disconnect the wiring from the coil to
be tested.
2 Test the coil resistance using a multimeter set
to resistance (Ω). Refer to the Valve Coil
Resistance Specification table.
Result: If the resistance is not within the
adjusted specification, plus or minus 10%,
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
Proportional solenoid valve, 3 position
4 way, 20V DC
(schematic items AA, AB, AC, BC, BG,
BK, BN, BS, BU)
24 Ω
Solenoid valve, 20V DC (schematic item
BG)
24 Ω
Proportional solenoid relief valve,
20V DC (schematic item BW)
22 Ω
Содержание Genie Z-40/23N
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Страница 111: ...September 2016 Service and Repair Manual 101 Electrical Schematic Chassis ...
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Страница 114: ...Service and Repair Manual September 2016 104 Electrical Schematic Ground Controls ...
Страница 115: ...September 2016 Service and Repair Manual 105 Electrical Schematic Platform Controls ...
Страница 117: ...September 2016 Service and Repair Manual Part No 1268528 Z 40 23N Z 40 23N RJ 107 Ground Control Box Wiring Diagram ...
Страница 118: ...Service and Repair Manual September 2016 108 Ground Control Box Wiring Diagram ...
Страница 119: ...September 2016 Service and Repair Manual 109 Platform Control Box Wiring Diagram ...
Страница 120: ...Service and Repair Manual September 2016 110 Z 40 23N Z 40 23N RJ Part No 1268528 Platform Control Box Wiring Diagram ...
Страница 122: ...Service and Repair Manual September 2016 112 Platform Control Box Wiring Diagram Options ...
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