Modifications; Air Purge" Work Supports; Air Spring" Work Supports - Enerpac WFL 221 Manuel D'instructions

MODIFICATIONS

"Air Purge" Work Supports

If the wiper area of the work support is exposed to coolant flooding or fine machining debris, the work
support should be modified to become an "air purge" work support. An "air purge" work support allows
air to blow through the wiper and prevents coolant and debris from entering the work support.
1. Connect an air supply line (item F) to the side breather port (see figure 4) or through
2. NOTE: The air purge only requires between 5-15 psi (0,3-1,0 bar) air pressure.

"Air Spring" Work Supports

An "air spring" work support uses air, instead of a spring, to maintain the support plunger in an
extended position. An "air-spring" work support will not retract the plunger. (Note: Only spring advanced
work supports can be modified to become "air spring" work supports.) An "air spring" work support can
offer greater control over the force of the plunger against the workpiece. An air spring work support can
also provide more force against the plunger than conventional spring advanced models.
1. Remove the contact bolt, adjustment screws and spring from within the work
2. After removing the spring, replace the nylon adjustment screw to seal the threads.
3. Connect an air supply line (item F) to the side breather port (see figure 4) or through
4. Add a two-position manual air valve or a solenoid operated air valve to the air
manifold breather port (see figure 5). If connecting to the side breather port, the
breather fitting must first be removed. If connecting to the manifold breather port,
remove the screw plug and copper gasket from the port, lightly lubricate the
provided O-Ring, and install the O-Ring in the counterbore around the port.
support plunger.
Also replace the contact bolt.
the manifold breather port (see figure 5). If connecting to the side breather port, the
breather fitting must first be removed. If connecting to the manifold breather port,
remove the screw plug and copper gasket from the port, lightly lubricate the
provided O-Ring, and install the O-Ring in the counterbore around the port.
supply line.
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