Attenuator; High-Pressure Filter Assembly (Optional) - Hypertherm HyPrecision 100D Instruction Manual

12. Place the stem flat side out, into the backup screw. Place the stem bushing, hoop, and seal on the
stem in the order shown below. The seal should fit into the hoop's sharp side. Use HP lubricant
to lubricate the OD of the seal and o-ring before they are inserted into the valve body.
13. Push the assembled parts into the valve body and use a 5/16 socket tool to screw the backup
screw securely into the valve body.
14. Apply Blue Goop to the threads of the bleed-down valve body and secure the valve to the
actuator housing.
15. Reinstall the bleed-down valve in the machine by attaching the gland nut to the high-pressure
collar at the high-pressure port of the valve. Torque the gland nut to 35 ft-lb.
16. Install the gland nut connecting the water drain tubing to the bleed-down valve.
17. Reattach the hydraulic hose to the oil port of the bleed-down valve.
The intensifier is now ready for use. Turn pump on and check for any leakage.

7.9 Attenuator

Hypertherm pumps are equipped with an attenuator with a volume of either 1 liter or 2 liters depending
on the size pump.
The 1-liter attenuator uses 3/8 in. HP fittings. The 2-liter attenuator uses 9/16 in. male x 3/8 in. female
inlet adapters on either end to connect to the 3/8 in. HP plumbing. Leakage from the inlet adapter or
fitting weep holes can be addressed by tightening the adapters and fittings into the attenuator end caps.
Leakage from the end cap weep-hole or the gap between the end cap and the attenuator body is not
serviceable by the user. If leakage persists from this area, contact a Hypertherm service representative
for further assistance.

7.10 High-Pressure Filter Assembly (Optional)

The HP filter assembly is an optional product available to screen small particles of debris out of the
high-pressure lines from the pump. The high-pressure filter is located at the output of the pump. It
contains a screen filter element that should be replaced on a regular basis. See the Scheduled
Maintenance Chart for a replacement timing guideline. The quality of water may increase or decrease
the duration between filter element replacements. Always replace the filter at the recommended interval.
Failure to replace the filter can result in the screen breaking which will release all trapped debris
downstream into the high-pressure lines. This can cause orifice and valve damage.
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