Nautel GV10, Troubleshooting Manual

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GV10/GV7.5 TROUBLESHOOTING MANUAL RESPONDING TO ALARMS
VERSION 3.2 2016-03-10 PAGE 4.1.49
Module Cooling Fan Replacement
See Figure 4.1.14 .
1. Remove the RF power module’s right-hand side cover by removing 11 M3 countersunk screws.
Retain hardware for re-installation.
2. Disconnect the suspect cooling fan’s mating plug (B1P1 through B6P1). Cut the tyrap that secures
the fan wiring to the splitter PWB.
3. Remove and retain the cooling fan’s two M3 captive screws that secure the fan to the module.
4. Obtain a replacement fan (Nautel Part # ZAP50) from the site spares kit or station spares kit or
from a suitable equivalent (vendor part # is Minebea Motor Mfg. Corp. 3115RL-07W-B79-E51).
5. Install the replacement fan using retained screws. Torque hardware to 1.0 inch-pounds only to
avoid cracking the fan’s body.
Twist the fan’s mating plug three times (reduces RFI) and reconnect
it to the splitter PWB. Secure the wiring using a tyrap (Nautel Part # HT66) from the ancillary kit.
6. Re-install the right-hand side cover using retained hardware.
7. Return the RF power module to the transmitter (see “Installing an RF Power Module” on
page 4.1.44 ).
Figure 4.1.14: Replacing a Power Module Cooling Fan
COOLING FANS
B1 - B6
(B1 removed)
B1
B2
B3
B4
B5
B6
RIGHT-HAND
SIDE COVER