VAF instruments 247 User manual
Technical Manual
Instructions for installation,
operation and maintenance
247
TICKET PRINTER
For MidFlow
®
and HiFlow
®
series ‘J’ Vane meters
Publication nr TIB-247-GB-0711
Supersedes TIB-247-GB-1201
TABLE OF CONTENTS
1. PREFACE....................................................................................... 2
1.1 GENERAL................................................................................................. 2
1.2 COPYRIGHT............................................................................................. 2
2. GENERAL DESCRIPTION............................................................. 3
2.1 OPERATION OF ZERO-START PRINTER .............................................. 3
2.1.1 Drive .................................................................................................. 3
2.1.2 Reset ................................................................................................. 4
2.1.3 Printing............................................................................................... 4
2.2 OPERATION OF accumulative PRINTER ................................................ 5
2.2.1 Drive .................................................................................................. 5
2.2.2 Printing............................................................................................... 5
3. PRINTER REMOVAL AND INSTALLATION.................................. 6
3.1 REMOVAL ................................................................................................ 6
3.2 INSTALLATION ........................................................................................ 6
4. CLEANING AND LUBRICATING.................................................... 7
4.1 GENERAL................................................................................................. 7
4.2 CLEANING................................................................................................ 7
4.3 RECOMMENDED LUBRICATION............................................................ 7
4.4 LUBRICATION POINTS............................................................................ 7
5. TROUBLE SHOOTING................................................................... 9
5.1 GENERAL CHECKS (Figures 6 thru 10)................................................... 9
5.2 TROUBLE SHOOTING........................................................................... 11
5.3 TICKET POSITION ADJUSTMENT........................................................ 12
5.4 SALE NUMBER ADVANCING MECHANISM INSPECTION .................. 12
5.5 RIGHT HAND WHEEL INCHING MECHANISM ADJUSTMENT............ 13
6. REPAIR AND REPLACEMENT.................................................... 14
6.1 TICKET TRAY REMOVAL (Figure 14).................................................... 14
6.2 WHEEL REMOVAL................................................................................. 14
6.3 WHEEL INSTALLATION......................................................................... 15
6.4 TICKET TRAY INSTALLATION (Figure 14)............................................ 15
6.5 RESET GEARS REPLACEMENT AND TIMING OF PRINTER.............. 15
7. PARTS LIST................................................................................. 18
8. WARRANTY CONDITIONS.......................................................... 21
2
1. PREFACE
1.1 GENERAL
This manual contains installation, operation and maintenance instructions for Ticket Printers series
7888 installed to VAF MidFlow®and HiFlow®liquid flowmeters Series ‘J’ . For IOM instructions of the
flowmeter section refer to Technical Manual 131 or 137 supplied with the instrument.
Every Ticket Printer is thoroughly tested at the factory before installation on the meter. However, like
any precision mechanism, it requires periodic care to ensure maximum service. This manual is for use
in areas where factory rebuilding facilities and adequate exchange stocks are not readily accessible
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
1.2 COPYRIGHT
This manual is copyrighted with all rights reserved.
While every precaution has been taken in the preparation of this manual, no responsibility for errors or
omissions is assumed. Neither is any liability assumed for damages resulting from the use of the
information contained herein. Specifications can be changed without notice.
MidFlow®and HiFlow®are registered trademarks of VAF Instruments B.V.
3
2. GENERAL DESCRIPTION
2.1 OPERATION OF ZERO-START PRINTER
The SERIES 788800 Ticket Printer (Zero Start) mechanically records and prints digital information
delivered to its drive shaft. This shaft positions the print wheels according to the ratio of internal and
external gears. Reset and print operations are manually actuated.
The zero-start printer is so-named because it begins to count at zero, and returns to zero when reset.
The printer total is the amount of delivery.
2.1.1 Drive
The shaft, figure 2, on the bottom of the printer is driven by a bevel gear from the meter-register or
other equipment. The printer’s bevel gear and shaft assembly turns in a counter-clockwise direction.
The internal bevel gear on the shaft drives the clutch assembly, associated pinions and the gear
assembly of the right-hand wheel.
Fig. 2: Drive Train
The zero-start clutch assembly prevents the printwheels from turning in a reverse
direction.
4
2.1.2 Reset
During printing operation, the printwheels are reset to zero through rotation of the reset gear-train and
reset shaft, figure 3. During the “Print In” cycle, one complete clockwise revolution of the reset drive
gear turns the reset shaft gear and reset shaft to zero the print wheels.
2.1.3 Printing
In printing operation, a ticket is inserted into the slot of the ticket tray until it bottoms on the internal
stop.
a. As the printing crank is turned, the reset drive gear, figure 3, makes one complete clockwise
revolution until a positive stop is reached. As the ticket tray moves into position, the seal pin
pierces the ticket, holding it in place. This initial printing is made with wheels at zero.
b. At the completion of delivery, the crank is turned in a clockwise direction one complete turn until
the stop is again reached. During this cycle the second printing is made recording the amount of
delivery. At the end of the print cycle the ticket tray returns to original position and the seal pin
releases the ticket.
5
2.2 OPERATION OF ACCUMULATIVE PRINTER
The SERIES 788801 Ticket Printer (Accumulative) mechanically records and prints digital information
delivered to its drive shaft. This shaft positions the print wheels according to the ratio of internal and
external gears. Print operations are manually actuated.
The accumulative printer is so-named because it is a non-resetting type that begins the count at the
accumulated total of the last delivery, prints it, accumulates a new total for the new delivery and prints
it. The amount delivered must be calculated by the operator.
2.2.1 Drive
The shaft, figure 4, on the bottom of the printer is driven by a bevel gear from the meter-register or
other equipment. The printer’s bevel gear and shaft assembly turns in a counter-clockwise direction.
The internal bevel gear on the shaft drives the clutch assembly, associated pinions and the gear
assembly of the right-hand wheel.
2.2.2 Printing
In printing operation, a ticket is inserted into the slot of the ticket tray until it bottoms on the internal
stop.
a. As the printing crank is turned, the reset drive gear, figure 5, makes one complete clockwise
revolution until a positive stop is reached. As the ticket tray moves into position, the seal pin
pierces the ticket, holding it in place. This initial printing is made with wheels as they were at the
completion of the last delivery.
b. At the completion of delivery, the crank is turned in a clockwise direction one complete turn until
the stop is again reached. During this cycle the second printing is made recording the accumulative
total of this delivery. At the end of the print cycle, the ticket tray returns to original position and the
seal pin releases the ticket.
6
3. PRINTER REMOVALAND INSTALLATION
3.1 REMOVAL
The cover of the ticket printer must be removed to expose the internal mechanism prior to
maintenance and repair.
a. Break the seal and remove four hex head screws from the bottom of the Meter Register Frame.
Lift off the printer cover.
b. To remove the printer from the register frame, unscrew four socket head screws.
Lift off the printer from the register.
3.2 INSTALLATION
After maintenance and repairs, install the printer onto the meter as follows:
a. Turn the printer crank until the tray is in outward position and seal pin down. Remove printer knob
and shaft extension
b. Rotate the large idler gear (B) so that the timing marks on it and the printer gear (A) align, fig. 6.
c. Mount the printer onto the meter register and secure with four socket head screws.
d. Place the cover on the printer. Install the four hex head screws from the bottom of the register.
Tighten the screws to retain the cover.
e. Wire and seal the four hex screws.
7
4. CLEANING AND LUBRICATING
4.1 GENERAL
Although the printer, when manufactured, is adjusted and lubricated, it does require periodic cleaning
and lubrication to give maximum service. Judgement of the intervals at which the printer requires such
service must necessarily be left to individual users, due to varying conditions of service. Under normal
circumstances, this will be no more than twice a year, or after each 100,000 units of measure
delivered.
4.2 CLEANING
a. Remove cover and case-assembly and detach printer from meter-register per Section 3.
b. Flush printing wheels, reset gears, and all drive gears with cleaning solvent. Blow out surplus
solvent with compressed air and lubricate unit.
c. If printing wheels are extremely dirty, a small brush may be used to scrub the figures.
CAUTION: DO NOT USE A WIRE BRUSH.
4.3 RECOMMENDED LUBRICATION
OIL : Anderol L-401-D or equivalent (Temperature range -60C to +253C).
GREASE : Anderol L-795 or equivalent (Temperature range -54C to +145C).
All lubricants used in the printer must be of a type which remains fluid over the full
temperature range to which the printer will be subjected. Also they should not oxidise or
dry out, leaving a gummy or perceptible residue
4.4 LUBRICATION POINTS
(Figures 4 and 5)
Apply recommended or equivalent oil to bearing surfaces of all shafts, studs, and bosses on which
parts move or rotate.
Apply recommended or equivalent grease to bearing and mating surfaces of all bevel gears, drive
gears, reset gears, wheel ratchets, ticket tray, shafts, studs, and bosses according to figures 4 and 5.
8
Fig. 4: Lubrication points
Fig. 5: Lubrication points
9
5. TROUBLE SHOOTING
5.1 GENERAL CHECKS (FIGURES 6 THRU 10).
If the reason for the trouble is unknown, it is necessary to examine the printer to be sure it functions
properly.
Observe function of the no back pawl by turning the crank in a counter clockwise direction. The no
back pawl should limit the rotation to 20 degrees.
Turn the crank in a clockwise direction. The one-turn stop pawl should stop the crank after one
complete turn.
Turn crank until tray is in rear position and seal pin is up.
While turning the crank, observe the following during the print-in cycle:
a. tray moves forward to print-in position, seal pin pierces ticket and wheels reset to zero.
b. print action occurs before stop.
c. simulate delivery by turning drive gear While delivery is being made sales number wheel
advances one digit.
Observe the following during the print-out cycle.
a. tray moves to rear printer.
b. print-out occurs showing the quantity delivered.
c. seal pin releases ticket before stop is reached.
Check print wheel end play for 0,5 mm to 0,65 mm.
Turn the printer so the printing arm faces you. Check the springs to see that they are properly
anchored.
Check roller on the printing arm for proper alignment on cam.
Examine stop pawl for proper assembly.
Turn the printer so the back faces you. Be sure the ticket stop screw is secure.
Check the tray support rods to be certain they are free and secured in place by four clips.
Turn the printer so the crank faces you. Be sure the springs are properly anchored.
Examine the E-ring retaining and pins to be certain that they are properly seated and thight.
Examine the three reset gears for damage or wear. Replace as required.
Fig. 6: Parts Identification
1
0
Fig. 7: Parts Identification Fig. 8: Parts Identification
Fig. 9: Ticket Tray Actuating Pin Fig. 10: Sales Advance Mechanism
11
5.2 TROUBLE SHOOTING
Table 1 is used to assist in locating problems and making minor repairs and corrections in the field. In
some problems similar defects can be produced by several causes of entirely different nature. Cause
of the trouble must be determined and the correction made.
TABLE 1 TROUBLE SHOOTING (refer to figures 6 thru 10)
Trouble
Possible cause Correction.
Printing crank turns hard. Burrs on reset gears or teeth
are damaged.
Figure 8.
Check reset gear group.
Replace defective gears.
Printing crank binds. Bent ticket tray actuating pin.
Figure 9. Straighten or replace the pin.
Printing crank fails to stop after
making one complete turn One-turn stop pawl may be
bent. Spring may be missing.
Figure 7.
Straigthen pawl or replace
spring.
Printing crank binds at one area
of reset cycle. Printing arm cam groove pin not
seated properly.
Figure 6.
Seat the groove pin properly.
Reset shaft jams. Reset gears may be out of time. Check reset gears and time as
required. See Section 6
Wheels fail to reset to zero. Spring missing from wheel pawl
or broken pawl. Replace defective wheel. See
Section 6.
Input shaft binds when turned
by hand. Bent transfer pinion shaft.
Figure 10. Replace transfer pinion shaft.
Pin shears on meter or drive
coupling. Groove pin not seated flush on
drive pinion. Bits of ticket in the
gearing.
Seat the groove pin flush with
the pinion. Clean out ticket bits
from the gears.
Weak or unclear print image. Bits of torn tickets are
interferring
with wheel figures.
Clean dirt out of wheels and
figures.
Trouble
Possible cause Correction
Print on ticket not legible. 1. Worn printing arm cushion.
Figure 6. 1. Replace printing arm
cushion.
2. Weak printing arm spring.
Figure 7 2. Replace printing arm spring.
3. Bent rebound plate that does
not give proper spring. 3. Replace rebound plate.
Prints zeros after delivery or for
each imprint. Out of time Retime the unit.
See Section 6.
Double stamping or ghosting. Weak rebound plate spring. Replace rebound plate spring.
Print out of position. Mispositioned ticket. Adjust ticket tray guides and
stop.
Paragraph C.
1
2
5.3 TICKET POSITION ADJUSTMENT
When print is out of position on the ticket, the tray stop and guides must be adjusted.
To adjust the depth of the ticket loosen the ticket stop set screw on the rear of the ticket tray, figure
11.
Move the stop forward or rearward as required, then tighten the set screw.
To adjust the lateral position of the ticket, remove the two ticket shield screws and shield. Move the
guides in notches to position the ticket properly, then replace shield and screws.
Fig. 11: Ticket Position Guides and Stop Screws
5.4 SALE NUMBER ADVANCING MECHANISM INSPECTION
Sale number advancing mechanism, figure 12, is tripped when printing occurs. The movement of the
sale advance wheel starts immediately with rotation of the input shaft and completes transfer within ¼
of a revolution. If the sales number on the right hand wheel does not align properly with the other
wheel, it must be adjusted.
To align the wheel, position the tail of the clutch spring in different slots of the transfer disc until
properly adjusted.
Fig. 12: Adjusting Sale Number
Advancing Mechanism
13
5.5 RIGHT HAND WHEEL INCHING MECHANISM ADJUSTMENT
Adjustment of the inching of the print’s right hand wheel is accomplished by turning the adjusting set
screw, figure 13. Turning screw clockwise, the inching occurs at a higher number and counter
clockwise at lower inching numbers.
With reference to the printing only, inching should take place between .3 and .4 above any previous
number.
Fig. 13: Right Hand Wheel Inching
Mechanism Adjustment Screw
1
4
6. REPAIR AND REPLACEMENT
6.1 TICKET TRAY REMOVAL (FIGURE 14)
Turn crank to print position (print hammer down) and remove printing arm spring.
Turn crank to stop position (seal lever up).
Flip printing arm to rear and remove three groove pins from printing arm shaft.
Pull out printing shaft from left side.
Remove pin from printing arm cam.
Remove E-ring from center crank shaft. Pull shaft out from right side until flush with frame. Leave
gears engaged.
Remove all tray rod clips and tray support rods.
Lift tray up while tilting left side up.
Fig. 14: Ticket Tray Parts
Identification
6.2 WHEEL REMOVAL
Remove the ticket tray, see paragraph 6.1.
Remove the retaining ring and washer from wheel shaft (left side).
Remove the wheel aligning spring from wheel shaft (right side).
Pull wheel shaft out from right side.
NOTE:
The shaft must be pulled out slowly so wheels, bushing and washers may be removed individually
without damage to the printing wheels.
15
6.3 WHEEL INSTALLATION
Start wheel shaft through frame (right side) and install two washers inside next to frame.
NOTE:
When starting shaft through frame, keep spline facing out of front.
Place the rigth wheel assembly on the shaft.
NOTE:
Wheel should be installed with zero in up position. This can be checked by moving stamping pad
down over the wheel to see that figure is centered in pad.
Move transfer pinion over to right and mesh with right hand wheel.
Move shaft to left and install next wheel to shaft, then place next transfer pinion into position.
Continue to place wheels and transfer pinions on the shaft until all quantity wheels are in place.
After quantity wheels are in place, place washers and short spacers on shaft. The sale number
wheels are then added, engaging their drive pinions.
Install long spacer and check end play: 0,5 mm to 0,65 mm.
Place washer on wheel shaft (outside of frame) and install retaining E-ring.
6.4 TICKET TRAY INSTALLATION (FIGURE 14)
Place tray inside frame tilting right side down to allow tray stud to pass through opening in frame (right
side).
Be sure that tray stud enters internal groove of actuating cam.
Install tray support rods. Double groove must be at right in front position and at left in rear position.
Push center crank shaft in, keeping two washers between retaining ring groove and frame. Check
timing gears, Paragraph 6.5.
Install E-ring and place two washers on shaft outside the frame, small diameter washer next to frame.
Place and pin printing cam on shaft, keeping cam cliff in upper position.
Place no-back pawl and tow washers on printing shaft and start shaft through frame (left side), placing
spacer, platten, rebound plate and spacer between frames.
Start shaft through hole in right side. Assemble piercing arm and spring to ticket tray. Assemble tray
actuating lever over arm and onto printing shaft.
Pin rebound plate and spacer to printing shaft.
Adjust the position of the print out the ticket. See Ticket Position Adjustment, Section 5.
6.5 RESET GEARS REPLACEMENT AND TIMING OF PRINTER
(Refer to figure 3 for parts identification)
Remove E-ring and washer and spring from reset shaft gear.
Remove E-ring and washer from reset gear.
Remove roll pin from reset shaft gear.
Remove reset gear.
1
6
Remove crank shaft as outlined in 6.1. and pull shaft from frame.
Remove reset drive gear.
Install new reset drive gear on crank shaft.
NOTE:
Timing mark on gear must be down in relation to the head of the crank handle stud.
Install crank shaft as outlined in 6.4.
Hold tray in rear position and install reset gear on stud.
To check internal cam engagement will tray stud rotate reset gear two revolutions noting tray
movement.
Install washer and E-ring on reset gear stud.
With timing marks aligned install reset shaft gear on shaft and secure with roll pin.
NOTE:
Roll pin must be flush with gear teeth.
Install wheel aligning spring, washer and E-ring.
17
1
8
7. PARTS LIST
Item No. Part Number. Partname
1 W2071-008 Housing
2 W4601-011 Hinge Pin
3 W5971-004 Ticket Guide
4 W7096-005 Ticket Cover
5 W4058-007 Gasket
6 W5404-017 Grub Screw
7 W4031-003 Magnet
8 W3401-013 Knob
9 W5407-021 Screw
10 W5405-017 Screw
11 W5407-027 Screw
12 W4051-004 Magnet Plate
13 W4058-008 Gasket
17 W4606-018 Groove Pin
18 W0600-020 Rebound plate
19* J054-0080 Spring
20 W5202-094 Spring
21+22 W7778-847 Print Arm Lever+Pin
23 W6104-060 Washer
24 W7779-413 Pawl
25 W0600-079 Spring
26 W1601-081 Collar
27 W0600-018 Print Arm
28* J054-0081 Nut
29* J054-0082 Lockwasher
30* J054-0083 Platen
31 W5371-235 Spacer
32 W7778-847 Print shaft
33 W7779-414 Print arm cam
34 W4671-063 Pin
35 W6104-147 Washer
36 W6104-022 Washer
37 W4010-025 Circlip
38 W5571-969 Shaft
39 W5171-472 Stud
40 W3601-015 Lever
41 W3071-434 Gear
42 W4671-063 Pin
43 W6104-114 Washer
19
44 W6109-002 Washer, Rubber
45 W5203-002 Spring
46 J054-0084 Crank
47 J054-0085 Screw
48 W501244-017 Screw
49 W32729-14-121 Ticket guard
50 W313705-010 Ticket guide
51 W3601-014 Seal lever
52 J054-0086 Spring
53 W501218-001 Screw
54 W7779-415 Ticket tray
55 W7778-447 Trip lever
56 W6104-026 Washer
58 W5571-971 Shaft
59 W4871-021 Clutch retrainer
60 W0601-043 Grub Screw
61 W0601-034 Spring clutch
62 W0602-008 Transfer Disc
63 W5201-061 Spring clutch
64 W0602-007 Detent
65 W2671-028 Driver
66 W3005-051 Bevel
67 W5201-062 Spring clutch
68 W3071-435 Gear
69 W6104-031 Washer
70 W5371-234 Spacer
71 W4010-005 Circlip
72 W6104-032 Washer
73 W5571-976 Wheel Shaft
74 W5371-132 Spacer
75 W0602-018 Flexible Identifier
76 W0600-043 Print Wheel
77 W1171-045 Spacer
78 W6104-144 Washer
79 W7779-416 Print wheel
80 W7779-412 Print wheel
81 W6104-143 Washer
82 W6104-145 Washer
83 W7779-421 Gear
84 W6501-009 Print wheel
85 W4037-008 Adaptor
86 W3071-436 Gear
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