OHAUS 700 Series, Руководство по обслуживанию на месте

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3-2
CHAPTER 3 SERVICING
3.1 SERVICE OF SERIES 700 TRIPLE BEAM (Cont.)
C. No Beam Movement (Cont.)
Problem: Check Pin Missing
Solution: Replace. NOTE: There is a long rod under the Balance that is held in place
by 2 pins.
Problem: Broken Magnet
Solution: Remove Trig Loop and replace Magnet. NOTE: Magnets should attract
each other in force.
Problem: Rubber stoppers used in shipping at the end of the Beam and under the
Pan are still in place.
Solution: Remove both.
D. Beam Graduations need replacing.
Solution: Replace with new Lexan Graduated Strip. The old Graduated Strip will
peel off. When replacing, move front Poise completely to the left and line up new
Graduated Strip at zero.
E. Zero Adjust Knob Replacement
Hold down Leaf Spring with a small screw driver or ball point pen and screw in until
flare has passed over the Spring. This is the most common cause of not being able
to zero the balance. Check to see if the leaf spring is missing.
F. Replacing cracked or broken Balance Cup. NOTE: This is a frequent occurrence
when a balance is dropped and lands on the pan edge. Unscrew Balance Pan and
remove Counterweights and shot from Balance Cup. Remove screw holding Bal-
ance Cup to Parallel Loop Assembly and remove old Balance Cup. Reassemble,
adding or removing shot to bring Balance to zero.