Shutdown Procedure - Hach astroTOC UV 4195-1010 Manuel D'utilisation

Component
Fittings
Manifolds
O-rings
Valve seals
IR cell
Tubing
Glassware
Cleaning solution
DI water
50/50 mix (by volume) of H
1.0 M sodium hydroxide
10% HCl
5% acetone

Shutdown procedure

Electrocution hazard. Remove all power from the instrument and relay connections before this
maintenance task is started.
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Ozone inhalation hazard. Under certain conditions, this instrument produces ozone concentrations
above safe exposure limits. Plumb waste gases to a fume hood or to the building exterior in
accordance with local, regional and national requirements.
Failure to do the correct shutdown procedure can cause damage to the instrument when the instrument is started
again.
The analyzer is designed for continuous operation. The life of the lamps decreases when the instrument is turned
off and on frequently.
• Do not allow the UV lamps to stay on when liquid is not flowing through the reactor. Blockage
and/or damage may occur.
28 English
Table 9 Internal components
Composition
Polypropylene
Acrylic
Silicone
Viton, Kalrez
PVDF
PFA/stainless steel, Norprene A-60-G, Tygon R-3603
Quartz, borosilicate glass
Table 10 Cleaning solutions and UV lamp mode
PO and Na O S
3 4 2 8 2
D A N G E R
W A R N I N G
C A U T I O N
N O T I C E
N O T I C E
UV lamp mode
ON or OFF
ON or OFF
OFF
OFF
OFF