Shutdown Procedure - HACH LANGE astroTOC UV Grundlegende Bedienungsanleitung

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 power from the instrument before doing maintenance or service
activities.
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 material safety data
sheets (MSDS) for safety protocols.
Health hazard. Hazardous levels of ozone can be generated if the UV lamps are left on while only air moves
through them.
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 useful life span of the UV lamps is
decreased if the lamps are turned on and off when not necessary.
• Do not allow the UV lamps to stay on when liquid is not flowing through the reactor. Blockage
and/or damage may occur.
• If measurement is not necessary or possible, use deionized water for sample in the analyzer.
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
UV lamp mode
ON or OFF
ON or OFF
OFF
OFF
OFF