VAF instruments 258 User manual
Technical Manual
Instructions for installation,
operation and maintenance
258
RESET COUNTER
For MidFlow®and HiFlow®series ‘J’ Vane meters
Publication nr
TIB-258-GB-0711
Supersedes
TIB-258-GB-0290
CONTENTS
1. INTRODUCTION ......................................................................................2
2. OPERATION..............................................................................................2
2.1 GENERAL............................................................................................................. 2
2.2 OPERATION........................................................................................................ 2
3. MAINTENANCE........................................................................................3
3.1 GENERAL............................................................................................................. 3
3.2 METER REGISTER REMOVAL........................................................................ 3
3.3 DISASSEMBLY PRIOR TO CLEANING.......................................................... 3
3.4 CLEANING ........................................................................................................... 3
3.5 INSPECTION ....................................................................................................... 4
3.6 LUBRICATION..................................................................................................... 4
3.6.1 RECOMMENDED LUBRICANTS............................................................. 4
3.6.2 POINTS TO LUBRICATE........................................................................... 5
3.7 ASSEMBLY AFTER LUBRICATION................................................................ 5
3.8 METER REGISTER INSTALLATION............................................................... 5
4. GEAR PLATE............................................................................................7
5. PARTS LIST..............................................................................................8
6. WARRANTY CONDITIONS..................................................................15
2
1. INTRODUCTION
This manual contains important information for the installer, the operator and for your maintenance
department.
To ensure safe and correct installation and operation, study this manual carefully before starting
operations.
For any additional information contact:
VAF Instruments B.V. Tel. +31 78 618 3100
Vierlinghstraat 24, 3316 EL Dordrecht Fax +31 78 617 7068
The Netherlands Internet: www.vaf.nl
Or your local authorized VAF dealer.
Their addresses can be found on www.vaf.nl
2. OPERATION
2.1 GENERAL
The Meter-register is operated by a drive shaft connected to a group of gears on the gear plate, which
converts the drive revolutions by the appropiate ratio. The output bevel gear of the group drives a
bevel gear which is connected to the drive shaft and clutch assembly. In rotating this shaft drives a
gear on the clutch assembly which in turn drives a gear on the right (unit) wheel assembly.
Revolutions are then accumulated on the wheels. In addition, this rotating shaft also drives the
bracket group connected to the accumulative totalizer shaft, thus both displays are driven from the
same source assuring accurate recording of information. During the reset operation, the clutch is
disconnected from the drive shaft, a shutter moves into place covering the display wheels and reset
fingers engage heart-shaped cams on the individual wheels to move them back to a zero position. In
addition, a set of anti-topping fingers engages the wheels to prevent jamming. At the completion of
reset, the display wheels will read all zeros, and the shutter will rise to the normal operating position.
The clutch will engage the drive shaft to transfer the information from the next delivery. The totalizer
wheels will be unaffected by this reset operation, thus displaying an accurate measure of the
accumulated totals of many deliveries.
2.2 OPERATION
Operate and reset meter-register as follows:
1. to reset indicating wheels to zero, turn reset knob, on right side of register, clockwise.
CAUTION DO NOT TURN COUNTER CLOCKWISE
2. do not start delivery unless shutter is in full open position. If numerals on indicating wheels are not
in full view, resetting operation has not been completed, in which case, turn reset knob clockwise
untill shutter disappears and reset knob returns to its normal position.
3
3. MAINTENANCE
3.1 GENERAL
The meter-register is fully lubricated and properly adjusted at manufacture. However, periodic
cleaning and lubrication are required. Judgement of the intervals at which the meterregister requires
such service must necessarily be left to the individual user, due to varying conditions of service.
Under normal conditions this will be at least once a year, or after each 2.5 million units of measure
delivered, which ever comes first.
3.2 METER REGISTER REMOVAL
Remove the meter-register from the meter by removing the bolts holding the two together. Bolts are
located at the bottom of the Meterregister.
3.3 DISASSEMBLY PRIOR TO CLEANING
Remove the meter-register from its housing as follows:
1. Remove the bolts securing the cover (if present) to the top of the housing. These bolts are hex
head and are located at the four corners of the bottom of the housing. Remove the cover and
lever.
2. Remove the three button-head bolts securing the meterregister to the housing. Remove the meter-
register.
3. Remove the screws securing the gear plate to the bottom of the housing. Remove the gear plate.
3.4 CLEANING
CAUTION:DO NOT USE A WIRE BRUSH
1. Wipe bezel crystal with a clean lint-free rag.
2. Flush wheels with clean Savasol or equivalent solvent. Blow out surplus solvent with compressed
air.
3. If the wheel faces are dirty, gently clean with a clean lintfree rag, dipped in solvent.
4. Clean the gears on the gear plate by flushing or with a brush dipped in solvent. Blow dry with
compressed air.
5. Clean housing by dipping, flushing or brushing with solvent. Blow dry with compressed air.
4
3.5 INSPECTION
A periodic inspection of the entire meter-register, housing and gear plate is required to make sure that
they function properly, parts are in place, and no binding or excessive side-to-side motion of shafts
occurs. A check list on such procedures follows:
1. Check the following shafts for excessive side-to-side motion. Note: remove the meter-register from
the housing before checking and shaft freedom.
a. wheel shaft
b. anti-topping finger group shaft
c. reset finger group shaft
d. clutch group shaft
e. pinion shaft.
2. Temporarily instal the gear plate and meter-register in the housing and check for proper
engagement and freedom of movement of:
a. all gears on gear plate
b. output bevel gear on gear plate with the bevel drive gear on drive shaft.
c. 57 tooth gear on clutch assembly with gear on right wheel assembly.
d. gear drive shaft, with gear train that operates tha totalizer, and gear connecting the drive
train to the totalizer.
3. Check spacing 00.010 to 0.020 inch (0,25 to 0,50 mm) of brake above the right hand wheel.
4. Rotate drive shaft by hand to see that unit operates freely and then reset, checking for proper reset
and shutter action, adjust pointer after reset as required.
5. Check all screws, retaining rings and groove pins to see that they are tight and seated properly.
3.6 LUBRICATION
3.6.1 RECOMMENDED LUBRICANTS
NOTE:
Anderol products are manufactured by Lehigh Chemicals, Nuoder Division, Tennoco-Chemicals, Inc.
Chestestertown, Md.
OIL
Anderol L-401-D or equivalent with a temperature range of -65° to +300°F (-54° to +149 °C).
GREASE
Anderol L795 or equivalent with a temperature range of -65° to +300°F (-54° to +149 °C).
NOTE:
All lubricants used in the register must be of a type which remains fluid over the full temperature
range to which the register will be subjected. Also, they should not oxidize or dry out leaving a
gummy or perceptible residue.
5
If the Anderol lubricant is not available, a substitute with equivalent properties may be used. To assist
fieldmen in obtaining suitable lubricants for the meter-register and ticket printers, the following list
showing equivalent lubricants has been prepared:
OIL: AEROSHELL FLUID NO. 3
ARGEOYLE ARTIC OIL LIGHT
REGENT SPINTEX OIL 60
CASTROL HYSPIN - 40
GREASE: AEROSHELL 14
ESSO BEACON - 325
3.6.2 POINTS TO LUBRICATE
OIL
All points indicated as (oil) on figure l should be lubricated with oil as described above. This includes
all shaftst studs, and bosses on which a moving part bears.
GREASE
Grease should be applied to all points indicated as (grease) on figure 1.
NOTE:
The oil and grease should be applied with a srnall brush to make certain that all areas will be properly
lubricated. In this manner, the amount of lubricant being used will be controlled easier.
3.7 ASSEMBLY AFTER LUBRICATION
1. Install the gear plate on the bottom of the housing and secure with screws.
2. Install the meter-register in the housing and secure with three button-head bolts.
3. Install the cover (if present) and lever and secure with bolts.
3.8 METER REGISTER INSTALLATION
Mount the meter-register on the meter and secure the two with bolts removed in paragraph 3.2.
6
7
4. GEAR PLATE
A gear plate can be mounted at the bottom of the Meter-Register in order to obtain several read-outs
on VAF Positive Displacement flowmeters (e.g. litres, m3). Two ratios are used, namely 1:1 and 10:1.
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5. PARTS LIST
ITEM QTY PART NUMBER DESCRIPTION
1+2 1 0609-0026 GROOVE PIN + DRIVE COUPLING
3 1 W6104-76 WASHER
4 1 W 7083-22 GEAR PLATE
5 1 W5522-1 DRIVE SHAFT
6 1 W6104-27 WASHER
7 1 W7180-3 GEAR
8 2 W6104-42 WASHER
9 1 W4611-2 SPLIT PIN
19 1 W4010-7 CIRCLIP
20 1 W3006-50 GEAR 50 TEETH
21 1 W5304-7 SPACER
22 1 W33534-6 BUSH
28 1 W5406-14 SCREW 10-32UNFx1/4”
A 1 W3007-59 GEAR 59 TEETH
B 1 W3007-59 GEAR 59 TEETH
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