TSI Instruments HM685, Руководство пользователя

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8-1
C H A P T E R 8
M a i n t e n a n c e a n d
Tr o u b l e s h o o t i n g
The HM685 Hydronic Manometer has been designed to provide long-term
field use with minimum required maintenance. As with any precision
electronic device, proper care, maintenance, and handling will ensure its
accurate and reliable operation.
I M P O R T A N T
There are no user-serviceable parts inside this instrument. Opening the
instrument case may void the warranty. TSI recommends that you return
the HM685
Hydronic Manometer to the factory for any required
maintenance or service not described in this manual.
R o u t i n e M a i n t e n a n c e
The following guidelines should be followed whenever storing the HM685
Hydronic Manometer:
Draining the Hoses
Fluid within the High (red) and Low (blue) pressure hoses should be
properly drained whenever the instrument is being stored after use.
1. Disconnect the manometer hoses from the test points ( Reference
Chapter 2, "Disconnecting the Manometer from the Test Points" ).
2. Disconnect the High (red) and Low (blue) pressure hoses from the
manometer.
3. Turn the shut-off ball valve on both the High and Low pressure hoses
to the open position.
4. Using a suitable high pressure air source, blow the entrained liquid
from both hoses.
Draining the Manometer Valve
Fluid within the manometer valve should be properly drained whenever the
instrument is being stored after use.
1. Disconnect the High (red) and Low (blue) pressure hoses from the
manometer.
2. Turn the valve handle on the manometer to the BYPASS position.
3. Hold the manometer with the pressure ports directed downward to
allow liquid to drain from the unit.