Erratic Registration
Consistent Over- or
Under-Registration
REGISTER MAINTENANCE
Repair of Register
To Remove Register
from Flowmeter
Page 9
Erratic Registration
Erratic registration is an indication of trouble in the system caused by air or dirt in the measuring
chamber. Do not try to correct this by recalibration of the flowmeter, but first check over the piping for
air entry, clean the strainer, and then, if the trouble has not been found, clean the flowmeter as
directed. If this does not correct the trouble, check for faulty installation.
Over-registration is an indication of air, whereas under-registration is generally caused by dirt or
pipe scale in the measuring chamber, or the liquid bypassing the flowmeter in some manner.
Consistent Over or Under-Registration
When the flowmeter registers consistently either more or
less than is delivered, the calibration may be corrected in the
following manner:
1. Remove four screws holding top cover and remove
cover.
2. Lift and turn the change gear shifter (see Figure 8) in
the direction indicated on the top of the shifter.
3. There is a series of holes, marked A to H, in the plate
into which the guide pin enters at different settings.
Altering the setting by one hole changes the calibra-
tion approximately 17 cubic inches in 50 gallons.
Example:
Suppose the flowmeter consistently gives 34
cubic inches too much when it registers 50 gallons. After removing the cover plate move the gear
shifter 2 spaces to the right
(from position E to position C)
to decrease the delivery about 34 cubic
inches in 50 gallons.
After changing the calibration always replace top cover, making sure that the sheet steel hous-
ing on the sides and back fits into the groove in the bottom edge of cover. Run a small amount of
liquid through the flowmeter before testing. To prevent tampering, always reseal after calibration.
Note:
For broader change gear requirements, refer to form TSG-310.
REGISTER MAINTENANCE
Repair of Register
Register parts are such that only minor field repairs are advisable. When a register is in need of
repair or service other than that for which instruction is given here, it should be returned to an autho-
rized Actaris distributor for service.
To Remove Register From Flowmeter
Loosen the two clamp screws on lower front of the register. Lift the register off. On Preset
Models the valve linkage must first be disconnected. (Remove cotter pin and washer at valve end.)
When one register is removed and another substituted,
1. Check the number of teeth on the change gears (See
Figure 9). They must be the same as the gears on the
old register
and on the same respective spindles
.
The number of teeth is stamped on each gear. To re-
move these gears, close the split end of the spindle
with a pair of pliers and pull off the gear. After putting
on a gear, spread the end of the spindle slightly.
2. Make sure the position of the “Gear Shifter” is the same
on the new register as on the old one — each hole is
lettered for convenience.
GEAR
SHIFTER
FIGURE 8
GEAR SHIFTER ADJUSTMENTS
FIGURE 9
CHANGE GEAR ARRANGEMENT
CHANGE GEAR “R”
CHANGE GEAR “S”
(ON “STD” SPINDLE)
Summary of Contents for RED SEAL MEASUREMENT neptune
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