Thermo Scientific 10519, Инструкция по эксплуатации

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5-1
CHAPTER 5
PREVENTIVE MAINTENANCE
This chapter describes the periodic maintenance procedures that should be performed on
the Model 200L Single Dilution Probe Controller to ensure proper, uninterrupted
operation. For example, the precision orifices and gauges should be checked. This
chapter also explains how to replace the Model 200L Single Dilution Probe Controller
subassemblies. It is recommended that the individual be familiar with the subassemblies
before attempting to disassemble or repair the controller unit.
SAFETY PRECAUTIONS
Some internal components may be damaged by the discharge of static electricity. To
avoid damaging internal components, follow these precautions when performing any
service procedure:
•
Wear an antistatic wrist strap that is properly connected to earth ground (note that
when the analyzer is unplugged, the chassis is not at earth ground).
•
If an antistatic wrist strap is not available, be sure to touch a grounded metal object
before touching any internal components.
•
Carefully observe the instructions in each procedure.
•
Remove the power cord from the unit when any of the assemblies are replaced.
REPLACEMENT PARTS LIST
It is recommended that the spare parts in Table 5-1 be kept on-site for quick repair in case
of unexpected failures. Refer to Figure 3-7 to identify their locations.
Table 5-1. Replacement Parts
P/N Description Quantity
10546 Span Solenoid Valve 5
10539 Precision Orifice 1
6984 Dilution Air Regulator 1
4546 Vacuum Gauge 30 in of HG 1
8105 Pressure Gauge 30 psig 1
4495 Flow Meter 2.5 LPM 2
7368 Solenoid valve, 24volt, 3-Way 1
7916 Fuse, ¼ amp, slo blo 1
4511 Fuse, 1 amp, 100 volt, slo blo 2
11912 Fuse, ½ amp, 250 volt (220 option) 2