OHAUS Pioneer PA64, Service Manual

Page: 76 / 116

CHAPTER 3 MAINTENANCE PROCEDURES
Ohaus Corporation www.ohaus.com 3-52 Pioneer
™ Balances Service Manual
3.3.33 Installing the Load Cell PCB-Temperature Sensor-Position Sensor Assembly
The Temperature Sensor, Position Sensor and the Load Cell PCB can be installed as an
assembly, as follows:
Figure 3-154. Load Cell PCB, Temperature Sensor and Position Sensor.
1. Install the Load Cell PCB by
fitting the groove on the left of
the PCB into the tab on the Load
Cell frame. (See Figure 3-155.)
When screwing in, first turn the
self-tapping Cell Board Screw in
a counterclockwise direction
until the first screw thread
engages and then tighten it.
(See Figure 3-111, page 3-42.)
Figure 3-155. Groove on left of PCB fits tab
on Load Cell frame.
2. Gently hold PCB in position while inserting and tightening the screw that secures it.
3. Carefully position the
Temperature Sensor under the
Magnet, so the Temperature
Sensor (a very fine thermister
that extends from the board)
goes into the hole between the
three screws on the bottom of
the Magnet. (See Figure 3-156.)
4. Insert the screw to secure the
Temperature Sensor Board.
Figure 3-156. Temperature Sensor
extends into a hole in the Magnet
Note : Do not adjust the screws around
the Temperature Sensor hole. It could
ruin the Load Cell.
Don’t adjust
screws around
Temperature
Sensor hole!
Position Sensor
Temperature
Sensor
Load Cell PCB