Yokogawa Extractive Oxygen Gas Analyzer TDLS220 - Manual (Page 4)

IM 11Y01B02-11E-A 3rd Edition :August 14, 2012-00
1-4 <1 QUICK START> 1-5iii
SAFETY should be considered first and foremost importance when working on the equipment described in this manual. All persons using this
manual in conjunction with the equipment must evaluate all aspects of the task for potential risks, hazards and dangerous situations that may
exist or potentially exist. Please take appropriate action to prevent ALL POTENTIAL ACCIDENTS.
1) Safe lifting and carrying
If it is necessary to relocate the analyzer, it should be lifted by at least two people wearing protective gloves and steel toe boots.
The analyzer should be always transported either in a vertical position as shown in the picture, or in a horizontal position with the mounting
plate facing down. If transported horizontally, it must be held by the mounting plate only. In vertical position, it is acceptable to hold the analyzer
by the elements in the “grip” area. Never hold the analyzer by applying force to the elements in the “Do not grip” zone or to the conecting cables
and tubes. If a winch or another hoisting device is used, it can be hooked to the upper mounting holes.
2) Electrical hazard
The areas of potentially hazardous voltage are labeled with this sign:
The analyzer is powered by either a ~220v, 50 hz or ~120v, 60 hz (model specific). During normal operation this voltage is not accessible from
outside of the enclosure. however, end user is responsible for connecting the mains to the analyzer terminals in the Power/Temperature
Controller box (right bottom block in the diagram above).
ThE wIRES BEINg CONNECTED MUST BE DISCONNECTED FROM ANY vOLTAgE SOURCES DURINg ThIS PROCEDURE.
PROTECTIvE gROUND wIRE MUST BE CONNECTED TO ThE DESIgNATED TERMINAL LABELED BY ThE CORRESPONDINg
SYMBOL.
DO NOT OPEN ThE POwER MODULE ENCLOSURE whEN ThE ANALYzER IS ENERgIzED.
Some maintenance and troubleshooting operations require opening the Electronics Controller box (left bottom block in the diagram above)
while the analyzer is powered. The highest voltage present in this box is 24v and is not hazardous. A higher voltage (+65v, 10 mA)
is shielded with an isolating plate and labeled. .
3) Thermal hazard
The gas cell can be heated up to +120 ºC and cause thermal injury to unprotected skin at direct contact. In normal configuration the cell is
wrapped in a thermal isolation jacket that prevents such incidents. DO NOT REMOvE ThERMAL JACKET whEN ThE ANALYzER IS
POwERED. Prior to performing service operations that require removal of the thermal jacket, power the analyzer down and wait 30 minutes to
let the temperature drop to a safe level.
Areas of a potentially hazardous temperature are labeled with the following symbol: