Multicyl User Manual
**BE SURE TO READ THIS ENTIRE MANUAL PRIOR TO USING ANY MULTICYL PRODUCTS**
Section 9: Timed Operation
In addition to the standard air control packages, some applications may require the use of a timer which may be supplied by Multicyl Inc. Time delay and timed stroke length options are available.
Section 10: Gang punching
Gang punching refers to a set-up of multiple cylinders operating simultaneously from a single signal. It is not possible to control fluid power devices absolutely, but adhering to the following principles a matched cycle time can be produced.
- An air accumulator tank is required to ensure a steady supply of compressed air. A minimum factor of 3 times the total machine volume is recommended for the accumulator tank.
- Short lines directly from the tank or a manifold are recommended for each cylinder. The use of ‘T’ connections or excessive feed lines may restrict the air flow and produce an unmatched cycle.
- Individual pilot valves for each cylinder will help in extreme cases.
- Be sure that all lines, connections, and union joints allow enough flow to feed all the cylinders.
- If there are problems with one or more of the cylinders in a gang punching system, those cylinders should be tested individually. This will determine if the problem is with the cylinder or with the air delivery.
- If the cylinders are striking the same die set to produce a higher tonnage, only short stroke (5/8" or less) cylinders are recommended, as it is more difficult to produce matched cycles in longer stroke cylinders. Unmatched cycles in such an application may damage the cylinder and/or tooling involved.
Section 11: Inverted or Horizontal Operation
Standard Multicyls will not operate in an inverted (upside down) position. The oil transfer system which allows oil to flow from the reservoir into the high pressure chamber is ineffective in this position. However, custom modifications may be made at our plant to overcome this problem and provide an inverted cylinder. Note: this must be requested at the time of ordering. All Multicyls can be operated from a horizontal position. When using a Multicyl in this position, be sure that the oil filler screw is facing upwards; this will properly align the bleed holes of the cylinder allowing the oil transfer system to work properly and the cylinder to function as it should.
Section 12: Maintenance
Planned periodical preventative maintenance should include seal kit replacement after extended use. The need for a new seal kit is indicated by cylinder malfunction, erratic results, or oil leakage. Seal kits for all cylinders are available through the dealer which supplied the equipment. Instructions for the replacement procedure are included with the seal kit.