AXXIOM Manufacturing, Inc. SCHMIDT, Operation And Maintenance Manual

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© 2013 Axxiom Manufacturing, Inc.
8.8.
Blast and Air Hoses:
All air hose, blast hose, and threaded couplings have gaskets that seal the
connection. To reduce loss of air pressure and/or premature abrasive wear replace these gaskets
when leaks are found. Inspect the couplings daily for leaks and wear. Replace gaskets when
visible wear or leaks are found. When installing or replacing hose couplings cut the hose end
square for secure fit (see Figure 8.3). To insure proper coupling connection always use fittings
that are the same brand. See the drawings and part lists in Section 9.0.
Figure 8.3 – Hose End Fit up
8.9.
Blast Nozzle(s):
Remove the blast nozzle daily and check the jacket and thread condition.
Check nozzle throat diameter. An over-sized throat diameter reduces blast efficiency. Replace
the blast nozzle if worn or damaged.
8.10.
Valve(s):
Thompson Valve®, automatic air valves, control valves, and deadman valves should
be disassembled and inspected quarterly, or more frequently if heavily used. The Thompson
Valve cylinder should be cleaned and lubricated with an anti-seize compound. Replace parts as
needed with Schmidt® original factory replacement parts furnished by an authorized Schmidt
distributor. Periodically check if air is leaking from end of blast nozzle when the blast operation
is off. A worn Thompson Valve seat usually causes this. It is replaced by removing the four
bolts in the base of the valve to allow disassembly. Refer to valve drawings in Sections 9.0.
Depressurize vessel before performing any maintenance. See Section 6.2. Removing the
Thompson valve bolts with the abrasive blaster pressurized will result in serious injury or death.
Use of replacement components that are not Schmidt original factory replacement parts may
result in equipment failure which can result in serious personal injury.
8.11.
PPE:
Check daily to verify that all personal protective equipment is available for each blast
operator. Check daily to verify that all personal protective equipment is in good operating
condition. Consult the operating and maintenance instructions provided by the manufacturer of
each PPE item. See Section 3.10 and reference OSHA 29 CFR 1910 Subpart I.
Failure to use personal protective equipment could result in serious injury or death.
8.12.
Warning Decals:
Check monthly to verify that all the warning decals are in position and
legible. See Section 0.0 for full descriptions and locations.
Failure to maintain warning decals risks the possibility of not alerting the abrasive blaster
operator to potential dangers which can result in serious injury or death. See Section 0.0.