Ohaus 1500 Series HARVARD TRIP MECHANICAL BALANCES Manual - Manual (Page 3)

3
UNPACKING AND ASSEMBLY INSTRUCTIONS
Harvard Trip Balances are shipped as follows:
• Completely assembled Balance
• Instruction
manual
• Warranty
card
Your new precision Balance has been packed in a carton specifically designed to
protect it during shipment. Follow these instructions and your Balance will be
operational in just a few minutes. Carefully unpack and verify that all items are on
hand.
1. Remove the Balance from the carton by pulling on the cardboard inserts.
2. Remove cardboard inserts from Balance.
3. Remove the two round rubber beam retainers from between the Base and
Platform End Loops. All packing material should be retained if you anticipate
INSTALLATION
Place the Balance on a reasonably flat, level surface away from sources of
vibration and drafts. Move the sliding weight (Poise) all the way to the left facing
the front of the Balance. On Model 1560-SD, slide the tare weight (Poise) all the
way to the left. This will result in the Balance being very nearly at zero.
OPERATION
Zeroing the Balance
To set the Balance exactly at zero, adjust the knurled Zero Adjust Knob which is
located at the right end of the Beam. It is advisable to check the zero balance
periodically because foreign material may accumulate on the Platform or the
Beams. This can produce a slight change in the zero balance position. In
addition, whenever the Balance is moved, the zero balance must be rechecked.
Any appreciable change in the inclination of the working surface will affect
accuracy.
The Base of each Balance is leveled on a surface plate at the factory and will rest
evenly on any perfectly flat surface. The Balance may rock slightly if the working
surface is not absolutely flat. This should be eliminated by shimming under the
Base. Be sure to adjust the zero balance after leveling.