Maintenance - GPI FM-300H Owner's Manual

Calibration Container
The desired calibration container should
be uniformly dependable and constructed
with a graduated neck. The container's
volume indicator should be clearly and
precisely marked. It is helpful if the
container's material allows a window
through which the level of liquid can be
viewed. GPI offers a properly designed
calibration container for volumes of 5
gallons or 5 litres.
DO NOT use several smaller containers or
a larger container with a 5-gallon marking.
For the most accurate results, dispense
at flowrates that best simulate your actual
operating conditions. Avoid "dribbling"
more fluid or repeatedly starting and stop-
ping the flow. These actions will result in
less accurate calibrations.
During calibration, make sure you meet
the meter's minimum flowrate require-
ments of 2 GPM (7 LPM).
Before calibrating, purge the system of
air using instructions in the Before Each
Use section.

MAINTENANCE

This meter is virtually maintenance free.
It is important, however, that the nutator
disc moves freely.
To prevent drying of chemical on internal
assemblies, meters should be kept free
of chemical when not in use for extended
periods of time. Flush and clean after each
use to promote trouble-free operation.
Removal
WARNING
During meter removal, chemical may
spill. Follow the chemical manu-
facturer's safety precautions for
cleanup of minor spills.
6
1. Ensure all chemical is drained from
the meter. This could include draining
the hose, meter and nozzle.
2. Wearing protective clothing, loosen
the meter from fittings by hand.
CAUTION
To avoid damage to the housing, do
not use a wrench.
If the meter is not immediately installed
again, cap the hose end to prevent spills
and drying. The nozzle could be used for
this purpose. Flush the meter if it will not
be in use for more than two weeks.
Flushing
When removed or not in use for more than
two weeks, flush the meter to remove
chemical residue.
CAUTION
Do not submerge the meter.
If needed, clean the meter using Cleaning
instructions.
Cleaning
During use, the meter should be kept free
of liquid to ensure drying does not occur
inside the meter. If drying should occur,
the nutator will stick or drag, affecting ac-
curacy. If this occurs, cleaning is required.
Cleaning the Nutator
1. Loosen the screws on the back of
the meter about 1/4 inch (0.6 cm).
(Figure 2)
Figure 2