All CARVER gauges are calibrated for the specific ram diameter of the hydraulic unit. The Manual Pellet 12-ton ram
is 3.294 square inches. The standard gauge readings display the load, or force, in pounds as well as metric tons applied
between the platen and head of the press. Accordingly, all calibrations show the load in pounds-force applied by the
press to the material being pressed. For example: a 10,000 lb. load applied to material having an area of one square
inch (one square mm) would be equal to a pressure of 10,000 lbs. per square inch applied to the material. Or, if the
material being pressed has an area of four square inches (258.08 square mm) a 10,000 lbs. applied load would be equal
to 2,500 lb. per square inch on the material.
EXAMPLE: 10,000 lbs. FORCE
= 2,500 PSI
4 square inches
CARVER gauges are highly sensitive, precision instruments. Care should be taken to avoid sudden decompression,
shock loading, over-pressurization, etc., which will result in damage to the gauge and void the warranty.
2.5 FILLING THE OIL RESERVOIR
The hydraulic unit is filled with oil at CARVER, INC. and should not require additional oil. In the event there is some
oil loss, lower the platen, remove the sintered breather plug, and fill with oil up to the level of the filler hole. Only
special CARVER # 2170 Hydraulic Fluid, or a brand name filtered HYDRAULIC JACK OIL, should be used. Refer
to Section 4 for recommended substitutes.
IMPORTANT: Brake fluid and similar products may damage your unit and will void the warranty.
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