What routine maintenance does the XMT 304 require?

Every 3 months, inspect and replace damaged or cracked torch bodies and cables/cords, replace cracked or unreadable labels, and clean and tighten all weld connections. Every 6 months, blow out the inside of the unit using airflow directed through the front and back louvers — do not remove the case when blowing out the inside. Always disconnect power before performing any maintenance. (Page 24)