Barnstead International Thermolyne 859 Series, Руководство по обслуживанию

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SETRA Balance Installation
*Steps 1-5 also refer to replacing an existing balance.
1. Lower the front control panel by removing the
screws. Locate the balance display board
mounted on the back of the front control panel.
This is the board that illuminates with green
numbers when the unit is powered up.
2. Remove this board from the unit.
3. Mount the new P.C board that comes with the
balance in this position.
4. Open the chamber-door and remove the load
plate. Remove the (4) ceramic support collars
that extend downward into the control section of
the furnace.
5. Remove the old balance from the control section
of the furnace. (Disconnect wire harnesses.)
6. Secure the support plate with (4) screws on
SETRA balance.
7. Set the SETRA balance (load cell) in the control
section of the furnace.
8. Connect the 10-pin gray ribbon cable that pro-
trudes from the bottom of the silver SETRA bal-
ance into P2 on the new display board.
9. Connect the 9-pin gray ribbon cable to P3 on
the new display board. Connect the other end
of the 9-pin gray ribbon to J5 on the main con-
trol board (PC859X1A) mounted in the NCAT
control section.
10. Connect the 15Vdc power cable (red and white
wires) to P6 on the new display board. Connect
the white wire on the opposite end of the cable
to J29 on the main control board mounted in the
NCAT control section. Connect the red wire to
J30 on the main control board mounted in the
NCAT control section.
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SETRA Balance