
Model 415C & 415SGS Instruction Manual
D01669102
April 2019, Revision A
41
8
Maintenance and Troubleshooting
Troubleshooting and regular maintenance procedures are described in this section.
If more extensive maintenance or service of the instrument is required, please
contact Fann Instrument Company.
Consistometers can be relatively reliable and trouble free - provided they are
serviced and maintained properly. Instruments that are neglected and receive
infrequent service or are subject to abuse are certain to cause trouble. Poly-paks™
and o-rings are important to reliable pressure sealing. If these components are free
from debris and scratches/dents, reliable sealing will be easily achieved.
1.
Inspect the pressure vessel’s o-rings after each test and wipe free of cement
particles and other debris. Do not use sharp objects, such as screwdrivers,
when removing the o-rings as it will likely tear or scratch the o-ring.
2.
It is recommended to apply an anti-seize compound to all threads
occasionally. Fann has done this on all required surfaces initially and re-
application should be on an “as-needed” basis.
3.
The mineral oil in the reservoir should be drained and replaced when it
becomes dirty. To thoroughly clean the reservoir, the entire unit may be
taken out of the instrument and the bottom removed. Mineral oil may be
conveniently added by pouring oil into the top of the reservoir. The mineral
oil supplied with the instrument has an open cup flash point of
approximately 188°C/370°F.
4.
The magnetic drive should be flushed with clean solvent periodically and
whenever cement flows into the upper plug or particles contaminate the
drive. If cement enters the magnetic drive, it will cause the bearings to wear
quickly. If the worn bearings are not replaced, it may cause the inner
magnetic drive shaft to wear out prematurely. Worn bearings may also
cause incorrect consistency measurement.
8.1 Slurry Cup Bottom Removal and Reinstallation
It is recommended that the slurry cup bottom not be removed frequently. It should
be removed, serviced and reinstalled only when necessary such as when there is a
leak through the slurry cup bottom.
1.
Locate the wrench multi-tool and 3/8-24 bolts
2.
Lock pressure vessel securely into bench mounted chain vice or suitable
clamping mechanism. Example shown below.
3.
Place “SLURRY” labeled section of tool over the slurry cup bottom notice
the two holes in the wrench align with the two threaded holes on the plug.