Actually, a wiper assembly that refuses to move might have a simple blown fuse. But usually fuses don't blow on their own. Even at full stall, the current draw of the motor should be well below the fuse's rating. If the fuse is blown, odds are there's something else wrong, like a shorted wiper-motor armature or faulty wiring anywhere along the harness between the motor and the switch. Even a mechanical problem like a seized bushing can make a fuse eventually fail.
The fuse is okay, or you've replaced it with one that has the appropriate amp rating. There's still no action? With the wipers and ignition on, whack the motor assembly with the handle of a screwdriver or a rubber mallet. If that gets things moving, you've got a bad commutator or an open winding on the armature. When the motor parks, if the brushes are sitting on the bad segment, no current flows. Whacking the whole business smartly can sometimes jolt things into motion. Because there are often a dozen windings on the armature, the motor runs fine until the next time it comes to rest on the bad spot.
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The intelligent shaft vibration transmitter is used with the eddy current sensor and can be widely used in the measurement and protection control of large rotating mechanical shaft vibration (rotation of the rotor relative to the bearing cover) in the power, metallurgy, petrochemical, steel and paper industries. It mainly monitors the radial vibration of the rotating machine rotor and monitors the vibration increase caused by the imbalance of the rotor, misalignment, and loose parts.
VB-Z220-VB-Z220 integrated shaft vibration transmitter
l Intelligent shaft vibration transmitter external power supply:
DC power supply: +24VDC ± 10%
Power consumption: <2W
l Input: eddy current sensor probe
l Record output mode: 4~20mA (load ≤500Ω)
Measuring range: 0-500um
l Alarm mode:
Alarm set point: 2 points (alert, dangerous)
Relay status: often lost power
Alarm relay output: 2 sets of normally open relays (alert, dangerous)
Contact capacity: 250VAC/3A or 30VDC/3A
Alarm delay: optional within 1~9 seconds
VB-Z220-VB-Z220 integrated shaft vibration transmitter
l Accuracy:
Standard output error: 1%
l working environment:
Working temperature: -20 ° C ~ 70 ° C
Storage temperature: -30 ° C ~ 85 ° C
Relative humidity VB-Z220 shaft vibration transmitter: 20~95% non-condensing
l Dimensions of the instrument: height × length × depth = 120mm × 90mm × 75mm (after the connection terminal depth zui small 132mm)
(instead of PyrisTM 301