Nautel NV30LT-N, Руководство по эксплуатации и техническому обслуживанию

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NV30LT-N OPERATIONS & MAINTENANCE MANUAL ROUTINE MAINTENANCE
VERSION 0.1 2015-03-01 PAGE 3.3.3
Replacing an Air Filter
The transmitter contains cotton air filters, in the front panel and in the upper, rear panel. If an air filter
becomes dirty or damaged, replace it as follows:
Interval
As required.
Parts and tools
 Replacement air filter
Procedure
Take the following steps to replace an NV30LT-N air filter:
1. Order a new filter or filters, as necessary. You can order a standard sized filter from Nautel (Nautel
Part # HR140 or HR147) or from the manufacturer (standard size 15” x 24” x 2” or 12” x 24” x 2”,
American Air Filter PerfectPleat HC M8 MERV 8 or equivalent; actual size 14.5” x 23.5” x 1.75” or
11.5” x 23.5” x 1.75”) or obtain one from any local supplier of HVAC supplies.
2. Unpack the new filter and inspect it for damage.
3. Remove the old or damaged filter (see Figure 3.3.1 on page 3.3.4 ) as follows:
 For a front air filter, loosen the quarter-turn fasteners on the appropriate front panel. Lift the
front panel away from the transmitter, noting there are two slots in the bottom edge of the
panel. On the back side of the panel, loosen the four quarter-turn fasteners securing the filter
bracket to the panel. Lift out the filter bracket, noting it also has slots in its bottom edge.
Remove (slide out) the air filter from the panel.
 For a rear panel filter, loosen only the four quarter-turn fasteners securing the appropriate
filter bracket to the panel (removal of the entire rear panel is not necessary). Remove the filter
bracket. Remove (slide out) the air filter from the panel.
4. Insert the new air filter into the bracket, noting the air flow direction in Figure 3.3.1 on page 3.3.4 .
Reinstall the filter bracket on its front or rear panel, as applicable. Tighten the quarter-turn
fasteners (two in front or four in rear) to secure the filter bracket to the panel. For the front air
filter, re-install the front panel and tighten its quarter-turn fasteners to secure it to the transmitter.
5. Dispose of the dirty or damaged air filter.