![GREAT PLAINS NTA2007HD Скачать руководство пользователя страница 109](http://html.mh-extra.com/html/great-plains/nta2007hd/nta2007hd_operators-manual_2259470109.webp)
Great Plains Manufacturing, Inc.
Troubleshooting
105
04/09/2019
166-283M
Magnehelic® Gauge Troubleshooting
If a Magnehelic® gauge does not read zero with the fan
off, inspect the gauge, and re-zero as needed.
Check for chamber and breather line problems before
re-zero. Re-zero cannot accurately compensate for leaks
and blockages.
Re-zero the Magnehelic® gauge on level ground with the
fan off, and if possible, under no-wind conditions. Turn
the set screw on the meter face until it reads zero from
the tractor driver’s viewing position.
MetaData: End of Troubleshooting
Problem
Cause
Solution
Non-zero
with fan off
Zero drift
Re-zero per instruc-
tions below
Gauge
reading
lower than
expected
Relief port plug
missing/damaged
Replace plug
Breather line
blocked or kinked
Clear breather line
Leak in sensing
line
Check line to cham-
ber
Gauge damaged
Check for loose
cover, damaged
O-ring
0
10
30
20
40
50
1
Null4:
Figure 91
Magnehelic® Gauge
31187
Port ID for Troubleshooting:
Over-pressure relief port (with plug in place)
Low-pressure port (breather/atmospheric pressure)
High-pressure port (from manifold chamber)
Alternate high/low ports are plugged.
Winter testing/maintenance advisory:
Gauge readings may be inaccurate or sluggish below
-7
C (+20
F)
3
2
4
Содержание NTA2007HD
Страница 32: ...28 Great Plains Manufacturing Inc Contents Index NTA607 2007HD 166 283M Contents Index 04 09 2019 ...
Страница 177: ...Contents Index 173 04 09 2019 Contents Index 166 283M BLANK ...
Страница 178: ...Great Plains Manufacturing Inc Corporate Office P O Box 5060 Salina Kansas 67402 5060 USA EOD ...