Nautel V10, Руководство пользователя по установке и эксплуатации

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V10/V7.5/V5/V3.5 Installation and Operation Manual
Page 5-1
Section 5 System Level Troubleshooting Issue 3.5
V10/V7.5/V5/V3.5
INSTALLATION AND OPERATION MANUAL
Section 5 SYSTEM LEVEL TROUBLESHOOTING
5.1 GENERAL
This section contains maintenance and
troubleshooting information. Analyze fault
symptoms to determine the corrective
action required. Troubleshooting
information is presented based on the
transmitter front panel’s diagnostic
information (see 5.5).
CAUTION
The transmitter contains many solid state
devices that may be damaged by heat or
high voltage transients. Ensure circuits are
not overdriven or disconnected from their
loads while turned on.
5.2 SCHEDULED MAINTENANCE
Visually inspect the transmitter at
scheduled intervals. The recommended
minimum time between scheduled
maintenance visits is three months. Local
operating and environmental conditions
may dictate more frequent visits, while in
remote sites less frequent visits may be
acceptable. Experience and system
reliability will determine the most practical
schedule for a specific installation. The
user should adopt a similar maintenance
plan to the example shown in Table 5-1.
5.2.1 Cleaning the Transmitter
NOTE
A site located in a dirty area using open-air
cooling requires more extensive cleaning
than a site located in a clean area using
closed-air cooling.
•
At least twice a year, inspect and, if
necessary, replace the air filters using
Nautel Part # HAM65 or equivalent
(3M Filtrete filter, 1000 Microparticle
Performance Rating, MERV 11).
NOTE
Two types of air-cooling are available for
use with the transmitter – open-air and
closed-air. Open-air systems contain two
(V5/V3.5) or three (V10/V7.5) air filters
located in the back. For closed-air systems
the user must supply the filters, which are
to be located at the input duct.
Transmitter air flow is from back to front.
Ensure the air filter polarity is correct.
•
At least twice a year, verify all cooling
fans are operational. If necessary,
replace a defective fan assembly
(Nautel Part # for the assembly is
204-8019, Vendor # for the fan is
5920PL-07W-B49-DM5 or
EFB1548HGF00).
•
Once a year, clean the transmitter
using a vacuum cleaner and a soft-
bristle brush to remove loose dirt. Use
clean, damp rags to remove dirt that
cannot be vacuumed. Never use
compressed air to clean the
transmitter.
5.2.2 Checking Hardware
Check all hardware at least once a year.
Thermal cycling from turning the
transmitter on and off will require more
frequent checks.
•
Ensure proper sized tools are used to
prevent damage to hardware. In most
cases, hardware is metric.
•
A mounting surface or terminal that
has changed colour is indicative of a
loose hardware connection.
•
Multi-stranded cables installed on
terminal strips must be re-torqued.