NorthStar RIM Tach
®
8500 & 8500 Quad Instruction Manual
9
Dynapar (800) 873-8731 November 2008
3.1 Directions for Installing Spoked/Clamp Wheel and Enclosure 0.625” – 1.250”
ID
Pulse Wheel and Enclosure Installation
Caution must be used when handling the pulse wheel assembly. The surface of the pulse wheel outer rim is
sensitive to scratches and impacts. The magnetic properties of the pulse wheel material can also be distorted or erased by
exposure to strong magnetic fields.
Remove pulse wheel assembly from packaging.
Slide pulse wheel onto motor accessory shaft. Be sure to position the pulse wheel so that the letter ‘Z’ or
the sticker ‘THIS SIDE OUT’ is visible from the mounting face. Do not tighten.
Do not attempt to mount or dismount the enclosure with sensor probe module(s) installed. Remove all sensor
modules until enclosure mounting is complete.
Insert four ½-12 mounting studs so that the inside threaded portion is completely threaded into the motor frame. This will set
the mounting stud to the correct length. Torque the mounting studs to a nominal 60 ft-lbs. The mounting studs support the
weight of the enclosure during installation, permit better alignment to the motor, and prevent the Pulse Wheel from being
damaged.
Remove enclosure from packaging.
Determine which of two orientations of enclosure is best for this application (Sensor Modules horizontal or vertical).
Ensure that one of two drain holes is at bottom of enclosure. If not, rotate the unit 180°.
Insert the four alignment screws all the way into the 8500 housing. The 4 (10-32 UNC) alignment screws are screwed into the
cover screw holes. For this to be done, the cover must be removed. The pulse Wheel will not be lined up properly if the
cover is on the 8500. These standoff screws are used to exactly position the pulse wheel under the sensor module.
Place enclosure on rods and slide on to motor facing. Tap lightly with hand or hammer if needed to start enclosure to slide
over motor facing. Make sure clearance holes remain aligned.
Do not damage the pulse wheel when mounting the enclosure. If the pulse wheel assembly
is not far enough down the shaft, continue pushing it on with the enclosure until the enclosure seats.
Insert four 1/2-13 cap nuts onto the remaining exposed mounting studs. Tighten the nuts in an alternating star pattern.
Continue alternating and tightening until enclosure is seated. Torque all cap nuts to a nominal 50 ft-lbs.
Содержание NorthStar Rim Tach RT8500
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