Nautel GV5, Operation & Maintenance Manual, Page: 232 / 251

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL ROUTINE MAINTENANCE
VERSION 0.2 2014-07-23 PAGE 3.3.3
Replacing an Air Filter
The transmitter contains one cotton air filters in the front door of the transmitter and one in the upper,
rear panel of the transmitter. 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 GV5/GV3.5 air filter:
1. Order a new filter or filters, as necessary. You can order a standard sized filter from Nautel (Nautel
Part # HR142) or from the manufacturer (18” x 24” x 2”, American Air Filter PerfectPleat SC M8
MERV 8 or equivalent) 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 as follows:
 For a front air filter (see Figure 3.3.1 on page 3.3.4 ), open the front door. On the back side of
the door, loosen the two quarter-turn fasteners securing the filter bracket to the door. Lift out
the filter bracket. Remove (slide out) the air filter from the door.
 For a rear panel filter (see Figure 3.3.2 on page 3.3.5 ), loosen only the four quarter-turn
fasteners securing the 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
or Figure 3.3.2 on page 3.3.5 . Reinstall the filter bracket on the front door or rear panel, as
applicable. Tighten the quarter-turn fasteners to secure the filter bracket to the front door (two
fasteners) or rear panel (four fasteners).
5. Dispose of the dirty or damaged air filter.