Hypertherm HyPrecision 100D Instruction Manual page 44

Weep Hole Leakage
•
Weep Hole #1 (10) leakage means that the inlet fitting needs to be tightened into the output adapter.
•
Weep Hole #2 (11) leakage means that the output adapter needs to be tightened into the check valve
body.
Check Valve Replacement and Reconditioning
Required Parts:
•
Poppet kit, which includes: 1 HP poppet, 1 HP seat, 1 poppet spring, 1 LP poppet, 3 O-rings
•
High-pressure lubricant.
1. Remove the HP end cap (1) from the HP cylinder as described in the section on Removing Old
HP Seals.
2. Unscrew the output adapter (3) from the check valve body, remove, and discard the HP poppet
(5), poppet spring (6) and the HP seat (7).
3. Inspect the low-pressure poppet face of the check valve body (2). A worn face on the poppet (4)
or check valve indicates that it should be lapped as described in the next section.
4. Apply HP lubricant to both sides of the HP seat (7) and place the seat in the cavity of the check
valve body (2).
5. Install the poppet spring (6) and HP poppet (5) into the output adapter (3) and tighten the adapter
into the check valve body (2).
6. Replace the O-rings (8) (9) on the outside of the check valve body (2).
7. Verify that the basket interior is free of grease.
8. Replace the LP poppet (4) in the poppet basket located in the static end of the HP cylinder. Do
not put any lubricant here. The lubricant may prevent the LP poppet from moving freely.
9. Reassemble the end of the intensifier as described above in Installing New HP Seals.
(See previous figure)
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