45
11
MAINTENANCE
12
SPARE PARTS LIST
o) Isolate the katharometer unit at its PSU.
p) Make the remaining electrical connections at TB1 of the
katharometer unit – see Fig. 5.5 on page 17.
q) Replace the cover of the katharometer unit.
r)
Power up the katharometer unit from its PSU.
s) Carry out calibration procedure – see Section 8.3.
Note
. It is possible that the zero reading may drift for
several days after the removal of liquid.
11.4.2
Removal/Replacement of an Indicator Unit
a) Electrically isolate the 6553 Display Unit.
b) Release the retaining screw through the display facia and
carefully withdraw the chassis from its edge connectors and
out through the front panel – see Fig. 3.1 on page 5.
c) To replace the unit, carefully insert it into the display facia and
press firmly into position before tightening the retaining
screw.
d) Power up the display unit and carry out a calibration – see
Section 8.3.
11.4.3
Error Messages
If the error message 'NV Memory Error' is displayed the contents
of the non-volatile memory has not been read correctly during
power up.
To rectify the fault, switch off, wait 10 seconds and switch on
again. If the fault persists, contact the Company.
Warning
. Interference with any unit or its components
implies acceptance of responsibility by that person for
ensuring the continuing maintenance of intrinsic safety
requirements. Unauthorized repair or spare parts or
incorrect assembly may render any unit unfit for use in
an intrinsically safe application.
Note
. Although the digital display units may be marked
4600 on their display facia, they are dedicated variants
which are not interchangeable with the Company's
standard 4600 Controller/Display. These dedicated
display units are identified (4689 500 & 501 or 503) as
shown in Fig. 3.1 on page 5.
When ordering a katharometer unit, it is necessary to specify the
zero gas and range in association with the Company part
number. See the typical identification label shown in Fig. 3.2 on
page 5.
12.1
Consumables Description
12.2
Routine Maintenance Parts
Description
Part No.
Model 6553 Display unit
Fuse, 500mA 250VAC rated F 20 x 5 mm ceramic
cartridge HBC (1500A) 250VAC
0231 601
Function selector switch AK101
006553 510
Potentiometer (1k ), zero adjustment
002569 036
Katharometer
Low pressure High pressure
Analyzer Panel
006540 203
006548 000
Drying chamber refurbishment kit
006525 605
006548 007
Granular anhydrous CaCl2
006537 580
006537 580
12.3
Repair Maintenance Parts
Description
Part No.
Model 4234 Power Supply Unit
Nominal 230V unit
4234/50000
Nominal 115V unit
4234/50100
Fuses
F2/F3 – T250mA/ 1500A 250VAC HBC ceramic
cartridge 20 x 5 mm
0231577
F1 – 400mA cartridge
0231555
Katharometer
Low pressure High pressure
Analyzer Panel
006540 203
006548 000
Drying chamber cylinder - Acrylic
006525 710
006525 720
Drying chamber cylinder - Stainless Steel
006548 111
Drying chamber complete - Acrylic
006525 600
006548 003
Drying chamber complete - Stainless Steel
006548 110
Flowmeter (Without flow alarms)
006525 440
0216 485
Flowmeter (With flow alarms)
0216 557
Valve, metering
006540 361
0216 484
Coupling seal ring
006525 130
Katharometer unit
006539 960K (or J)
006548 001
Model 6553 Display unit
Description
Part No.
Display units Hydrogen Purity 80/85% - 100% H2 in Air
4689/503
Display units Hydrogen Purity 100% - 80/85% H2 in Air
4689/501
Display units Carbon dioxide purge
4689/500
Display units Nitrogen purge
4689/504
Zener diode safety barrier devices MTL 7755ac
0248 296
Low Flow Alarm (If Fitted)
Description
Part No.
Zener diode safety barrier devices MTL 767+
0248 298
Summary of Contents for 006539-960J
Page 49: ...47 14 SPECIFICATION d d ...
Page 50: ...48 14 SPECIFICATION DS AK100 EN Rev N d d d d ...
Page 51: ...Notes Sales Service ...