Hach POLYMETRON 8810 ISE, Основное руководство пользователя

Страница: 8 / 182

To open the cabinet, push the handle lid upwards, press the lock button, then open the door with a
45° left turn of the handle. To access the cabinet interior, remove the knurled screw on the right side
of the panel and carefully turn the panel sideways to the left taking care not to squeeze any tubing.
Hydraulic connections
D A N G E R
Chemical or biological hazards. If this instrument is used to monitor a treatment process and/or chemical
feed system for which there are regulatory limits and monitoring requirements related to public health,
public safety, food or beverage manufacture or processing, it is the responsibility of the user of this
instrument to know and abide by any applicable regulation and to have sufficient and appropriate
mechanisms in place for compliance with applicable regulations in the event of malfunction of the
instrument.
Sample
The sample enters the analyzer through a 12/14 mm hose ( No. 15 in Figure 1 on page 6). Flow rate
should be between 40 and 300 liters/hour under a pressure of 0.5 to 6 bar.
Rinse water
The rinse water enters the analyzer through a 6/8 mm hose ( No. 14 in Figure 1 on page 6). Water
pressure must be between 1 and 6 bar.
Reagents
The reagent containers are connected to the pumps according to the instructions corresponding to
the application.
Drain
The analyzed sample is drained at atmospheric pressure through a 12 mm hose ( No. 7 in Figure 2
on page 7) delivered with the analyzer for initial startup. Make sure that no backflow occurs in this
tube or the other two drainage tubes (overflow
No. 8 in Figure 2 on page 7 and siphon No. 5 in
Figure 2 on page 7).
Note: With the cabinet model, all three tubes drain into a receptacle with a 50 mm outlet.
Compressed air connection
The analyzer requires dry and filtered compressed air at a pressure of 4 to 7 bar. It should be
supplied to the valve (
No. 10 in Figure 1 on page 6) using a suitable plastic tube of 4/6 mm diameter.
Electrical installation
D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the document.
D A N G E R
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected before making
electrical connections.
D A N G E R
Electrocution hazard. Protective Earth Ground (PE) connection is required.
Wiring procedures and cable preparation
The following procedure must be followed for all cables connecting peripherals (e.g. pumps, level
detectors, alarms, etc.) with the electronic unit (
No. 11 in Figure 1 on page 6). Some cables will be
supplied ready for use. Other cables which are supplied locally by the user must be prepared
according to the procedure explained in
Cable preparation on page 9 before connecting to the
electronic unit.
8 English