Enerpac WSL-442 - Manual (Page 6)

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 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.
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
support plunger.
2. After removing the spring, replace the nylon adjustment screw to seal the
threads. Also replace the contact bolt.
3. Connect an air supply line (item F) to the side breather port (see figure 4) or
through 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.
4. Add a two-position manual air valve or a solenoid operated air valve to the air
supply line.
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