Maintenance And Inspection, And Repair And Adjustment At Replacement Of Measuring Units; Light Source; Sector Motor And Sector - Fuji Electric ZPA Service Manual

2. MAINTENANCE AND INSPECTION, AND REPAIR AND
ADJUSTMENT AT REPLACEMENT OF MEASURING UNITS

(1) Light source

Recommended period of replacement : 5 years
1) Error mode
Error mode (1) : Short circuit in and disconnection from the light
Phenomena : Scale-out indication of analyzer, Error-1 occurs.
Check : Turn OFF the power of the analyzer and remove the
Error mode (2) : Sealed gas in light source leaks.
Phenomena : Fluctuated Indication
Check : If the analyzer output is drifted due to ambient
2) Measures : If the light source is found defective, replace the light source motor unit.
3) Replacement : To replace the motor unit, remove the cable between 2-pin terminals and motor connector.
4) Adjustment after replacement :

(2) Sector motor and sector

Recommended period of replacement : 5 years
1) Error mode
Error mode (1) : Motor rotation stop
Phenomena : Scale-out indication of analyzer , Error- 1 occurs.
Check : With the analyzer power ON, check that the shaft is
Error mode (2) : Unstable rotation of a sector
Phenomena : Scale-out indication of analyzer: Error- 1 occurs.
Check : With the analyzer power ON, check if unusual noise
2) Measures : If the sector motor is found defective, replace the light
3) Replacement : To replace the motor unit, remove the cable between 2-pin terminals and motor connector.
4) Adjustment after replacement :
12
source electrically heated wire.
power cable connected to the light source.
Measure resistance between 2-pin terminals at the
light source, and the resistance value must be 36.5
±2 (for ZPA, ZPB and ZPG-CO
(for ZPG-NO,SO and CO). If resistance values are
2
infinite, the light source may be broken. As the
resistance value is decreased, the indication will be
drifted in the minus direction.
conditions around the analyzer and other units are
normal except for the light source, sealed gas may
leak.
Loosen 2 screws that fasten the light source motor unit to the optical base plate .
Perform zero and span calibration.
normally rotating as viewed from the motor.
Indication is fluctuated.
is generated from the motor due to metal contact. If
no noise is heard, remove the light source motor unit.
Turn ON the power of the analyzer and check the
rotation of motor shaft and sector
source motor unit.
Loosen 2 screws that fasten the light source motor unit to the optical base plate.
Perform zero and span calibration.
) or 6.2 ±0.3
2
Measure the resistance
between terminals with cables
disconnected.
< Light source unit >
Light source motor unit
as viewed from cell side
Motor shaft
Check sector rotation
from here.
TN5A1191-E