2
For accurate measurement, meter and piping must be filled
with liquid and free of air. Meter should be calibrated per
instructions in this manual prior to its use.
1. Reset meter to “0” (with no liquid flowing).
3. Meter is ready for use. Start flow of liquid. Do not exceed
50 PSI line pressure.
OPERATING INSTRUCTIONS
CALIBRATION PROCEDURE
The Series BD807CMK meters are factory calibrated in either
U.S. gallons or liters using mineral spirits. Calibration is
recommended when first using the meter, after disassembly, or
after significant wear.
1. To calibrate the meter, first locate a container of KNOWN
volume. It is recommended that the container’s volume be
five gallons or larger.
2. Prime the pump and meter to remove all air from the system.
3. Reset the meter to zero (with no liquid flowing).
4. Fill the container to the known volume.
5. If indicated amount does not match known volume, insure
pump is off and pressure relieved, then remove seal screw
(item 23) and turn calibration screw (item 21)
counterclockwise to reduce the amount indicated on the
meter, or clockwise to increase the amount. A full turn will
change the indicated amount by about 0.1 Gal. (0.4L).
6. Reinstall seal screw.
7. Repeat step 2 - 6 until calibration is acceptable.
Meter chamber assembly consists of upper and lower chambers,
a nutating disc and seal gasket. Reassemble by reversing
procedure.
If replacement of any components of the meter chamber
assembly is required, the complete assembly must be replaced
due to the precise method of its construction. This assures a
proper fit and a correctly operating chamber.
Gear Train and Seal
To disassemble gear train and seal, remove gear frame (item
12) by prying slightly. Remove cluster gear (item 10) and
washer (item 11) from shaft (item 9). Remove drive gear (item
8) and washers (item 7) by rotating and pulling drive gear. Remove
O-ring seal (item 6).
When reassembling seal, lubricate O-ring liberally with oil or
petroleum jelly and replace in cover. Place washer on drive gear
shaft. Carefully rotate and push shaft through O-ring and cover
to prevent damage to O-ring. Shaft must then be guided into pinion
bevel (item 28) if counter has not been removed. Replace
remaining parts to complete assembly by reversing disassembly
procedure.
Storage:
If meter is to be stored for a period of time, clean thoroughly. This
will help protect meter from damage.
Counter is reading high or low:
• Check calibration and recalibrate if necessary.
• Check for air in product and repair air leaks.
• Meter chamber or gears may be worn or sticking. Correct by
cleaning or replacing internal metering components.
Shaft seal leakage:
• Dirty or damaged seals. Correct by cleaning o-ring and seat
area or replacing seal.
Gasket leakage:
• Correct loose gasket by tightening joints.
• Clean dirty gaskets and seat area.
• Replace damaged gaskets.
Low flow capacity:
• Clean clogged meter chamber
• Clean or replace screens and filters in piping.
Meter body cracks:
• Install pressure relief valve to allow high pressure to bleed back
to tank.
Nutating disc breaks:
• Avoid flow surge by putting shut-off valve on outlet of meter.
• Place meter as close as possible to pump and keep piping full
of liquid.
TROUBLESHOOTING GUIDE
Meter is maintenance free under normal operation. However,
if meter becomes plugged, it will likely need to be
disassembled and cleaned. Use mineral spirits or diesel fuel
to clean meter components.
Counter Assembly
For access to counter assembly, remove reset knob (item 3) by
grasping edges and pulling firmly. Remove two screws (item
29) and lift counterface (item 2) and cover (item 1) off. Remove
two screws (item 13) to extract counter (item 4). Reassemble
by reversing procedure.
Meter Chamber
To expose meter chamber, tilt the meter slightly face down, so
that no parts fall out when removing meter housing. Remove
the four screws (item 20), then remove meter housing (item 19).
MAINTENANCE (see exploded view)
Ryton Aluminum
Flourocarbon Stainless Steel
WETTED MATERIALS
Figure 4.