Alemite 3640 User manual

Service Guide 3640 3640-B
3641 3641-B
3643
3644 3644-C
Alemite Corporation
167 Roweland Drive, Johnson City, Tennessee 37601
www.alemite.com
Copyright © 2004 by Alemite Corporation
This document contains confidential information that is the property of Alemite Corporation
670824 and is not to be copied, used, or disclosed to others without express written permission. Revision (10-04)
SER 3640
Refer to Figure 2-A
for configuration on each model
Description
The metered control valves in
model series 3640 are designed to
meter a variety of fluids.
The valve assembly dispenses
motor oils (SAE 5-50), gear oils (SAE
80-240), automatic-transmission fluid,
antifreeze (ethylene glycol), and
hydraulic fluid.
IMPORTANT: The valve is
NOT intended to meter
brake fluid, windshield
wiper fluid, or antifreeze and
water solution.
Each control valve:
• can automatically dispense a
preset quantity of fluid or
manually dispense
• includes an inlet swivel that
contains a strainer
Electronic Preset Metered Control Valve
Figure 1 Electronic Preset Metered Control Valve Model 3640 Series
Model 3641 Shown
Inlet
Connection Accuracy Delivery Units of Measure
(Totalizer Unit of Measure)
Flow Range Temperature Range Maximum Operating
Pressure
gpm lpm ° F° Cpsi bars
1/2 " NPTF (f) +/- 0.5 % Pints, Quarts, Gallons
(Gallons)Liters (Liters)0.25 to 8 1 to 30 20 to 120 -5 to 50 1000 67
Table 2 Electronic Preset Metered Control Valve Model 3640 Series Specifications
Valve Model Extension Nozzle Type
3640
Oil
Rigid Non-Drip Automatic
3640-B Non-Drip Manual
3641 Flexible Non-Drip Automatic
3641-B Non-Drip Manual
3643 Gear Oil
Rigid
Non-Drip Automatic (with Manual Lock)
3644 (Obsolete) Oil Non-Drip High-Volume Automatic
3644-C Non-Drip High-Volume Manual
Table 1 Electronic Preset Metered Control Valve Model 3640 Series Designation

Revision (10-04) 2 Alemite Corporation
SER 3640 Electronic Preset Metered Control Valve
Figure 2-A Electronic Preset Metered Control Valve Model 3640 Series - Exploded View

Electronic Preset Metered Control Valve SER 3640 Alemite Corporation 3 Revision (10-04)
Item
No. Part No. Description
Control Valve
Qty Notes Numeric Order
Part # (Item #)
3640 3640-B 3641 3641-B 3643 3644 * 3644-C
1B339800 Non-Drip Nozzle, Automatic 151891 (6)
2339084 Non-Drip Nozzle, Manual 1318400-2 (4)
3338702 Extension, Curved, 1/4 " NPTF (m) 1320421 (5)
4318400-2 Non-Drip Nozzle, Automatic (w/ Manual Lock) 1See
Figure 8 332892 (9)
5320421 Extension, Straight, 1/4 " NPTF (m) 1338702 (3)
651891 Bushing, 1/2 " NPTF (m) x 1/4 " NPTF (f) 1338709 (7)
7338709 Hose, 1/2 " NPTF (m) x 1/4 " NPTF (m) 1339084 (2)
8339149 Extension, Curved, 1/2 " NPTF (m) 1339149 (8)
9Non-Drip Nozzle, High Volume Automatic 1Obsolete
339662 (11)
10 340084 Non-Drip Nozzle, High Volume Manual 1B339800 (1)
11 Valve, Control, Electronic Preset Metered All Models 1See
Figure 2-B 340084 (10)
Legend:
Part numbers left blank (or in italics) are not available separately
* Obsolete

Revision (10-04) 4 Alemite Corporation
SER 3640 Electronic Preset Metered Control Valve
Figure 2-B Electronic Preset Metered Control Valve Model 3640 Series - Exploded View

Electronic Preset Metered Control Valve SER 3640
Alemite Corporation 5 Revision (10-04)
Item
No. Part No. Description Qty Notes Numeric Order Part # (Item #)
393307-219 Kit, Swivel 1 Includes Items 12 - 15 (12)
12 O-Ring 1 (13)
13 Swivel 1 (14)
14 Screen 1 (15)
15 O-Ring 1 (16)
393307-201 Kit, Top Case 1 Includes Items 16 - 18 (17)
16 Case, Top 1 (18)
17 Screw 1 (19)
18 Screw 4 (20)
393307-223 Kit, Keypad and Stop Pin 1 Includes Items 19 & 20 (21)
19 Keypad 1 (22)
20 Pin, Stop 1 (23)
393307-203 Kit, Circuit Board 1 Includes Items 21 - 23 (24)
21 Circuit Board 1 (25)
22 Screw 3 (26)
23 Washer, External Tooth 1 (27)
393307-217 Kit, Valve 1 Includes Items 24 - 31 (28)
24 Nut, End 1 (29)
25 Seal 1 (30)
26 O-Ring 1 (31)
27 Spring 1 (35)
28 O-Ring 1 (36)
29 Ring, Back-Up 1 (37)
30 Valve 1 (38)
31 Seal 1 (39)
32 393307-208 Screw 8 (40)
33 393307-209 Cover, Housing 1 (41)
393307-175 Kit, Gear 1 Includes Items 34 - 36 (42)
34 393307-210 O-Ring 1 (43)
35 Gear 1 (44)
36 Gear (w/ Magnet) 1 (45)
37 Housing 1 (46)
393307-218 Kit, Lever 1 Includes Items 38 - 40 393307-175
38 Pin, Roll 1 393307-201
39 Lever 1 393307-203
40 Spring, Lever 1 393307-208 (32)
393307-224 Kit, Bottom Case 1 Includes Items 41 - 46 393307-209 (33)
41 Case, Bottom 1 393307-210 (34)
42 Door, Battery 1 393307-215 (47)
43 Screw 4 393307-216 (48)
44 Cover, Case 1 393307-217
45 Partition 1 393307-218
46 Screw 4 393307-219
47 393307-215 Ball, Detent 1 393307-223
48 393307-216 Solenoid 1 393307-224
Legend:
Part numbers left blank are not available separately

SER 3640 Electronic Preset Metered Control Valve
Revision (10-04) 6 Alemite Corporation
Control Valve and Meter Operation
Modes of Operation
These valve assemblies are designed for
automatic and manual modes of operation.
In automatic mode the display shows AUTO in
the lower left-hand corner. See Figure 3. With the
meter set to manual, AUTO does not appear (area is
blank).
To change mode:
1. Press the RESET button.
• This resets the counter to zero.
2. Press the AUTO button.
• The meter toggles between modes.
Control Valve Operation
Manual Mode
With the meter set to manual:
1. Press the RESET button.
• This resets the counter to zero.
2. Pull and hold the lever until the required amount
of fluid is dispensed.
Automatic Mode
1. Press the RESET button.
• This resets the counter to zero.
2. Repeatedly press the 10, 1, and/or 0.1 buttons until the
required automatic dispense quantity
(up to 99.9 units) displays.
EXAMPLE: To set a quantity of 4.5 units,
• repeatedly press the 10 button until the screen is blank
• repeatedly press the 1button until 4 displays
• repeatedly press the 0.1 button until 5 displays
Once the quantity is set:
3. Momentarily pull the lever to start the dispense cycle.
• The valve latches in the open position.
• The valve automatically closes once the meter registers the
preset quantity.
Stopping Flow
The user can stop the flow during the dispense cycle by
pressing the red button*. Momentarily pull the lever to resume
the dispense cycle.
* Requires considerable force to depress.
Topping Off
The user can add fluid after the preset amount has been
dispensed by pulling the lever.
CAUTION
Do not press the RESET button before topping off. The
meter resets to zero to begin a new quantity.
Accumulated and Resettable Totals
The meter stores both accumulated and resettable totals.
Accumulated Total
Press and hold the TOTAL button to display the accumulated
total.
Resettable Total
Press and hold the TOTAL button for 3 seconds to display
the resettable total.
Press the RESET button while viewing the resettable total to
reset the counter to zero.
Figure 3 Meter Buttons (w/Auto Display)

Electronic Preset Metered Control Valve SER 3640
Alemite Corporation 7 Revision (10-04)
Figure 4 Meter Programming Access Hole
Meter Programming
NOTE: Each meter is programmed in quarts
and calibrated for motor oil at the factory.
Change Unit of Measure
1. Insert a blunt tool (5/32 "allen wrench) into the access
hole in the back of the meter.
•See
Figure 4.
2. Press and hold the tool for 2 seconds.
• The screen begins to flash and then displays the
current scale factor and unit of measure.
• The current unit of measure flashes.
• SeeFigure 5.
3. Press the TOTAL button to cycle through the
available units of measure (Quarts, Gallons, Pints, or
Liters).
CAUTION
The accumulated and resettable totals are lost
when changing to or from liters.
Once the required unit of measure displays:
4. Press the RESET button.
• The chosen unit of measure illuminates steady.
• The first digit of the value for the scale factor
flashes.
NOTE: Should Liters be set, the decimal
point flashes.To change to a comma:
4.1 Press the TOTAL button.
• The comma flashes.
4.2 Press the RESET button.
•The comma illuminates steady.
•The first digit of the scale factor flashes.
If the scale factor* does not need to be changed:
5. Insert the tool into the access hole in the back of the
meter once again.
6. Press and hold the tool.
• The screen flashes three (3) times and then goes
blank.
7. Press the RESET button.
• The normal delivery screen appears.
* The scale factor is a value that the meter uses to
calculate the amount of fluid measured. Figure 5 Scale Factor and Units of Measure Screen

Revision (10-04) 8 Alemite Corporation
SER 3640 Electronic Preset Metered Control Valve
Recalibration
It may become necessary to recalibrate the meter.
Variables that cause a meter to require recalibration are:
• fluid viscosity
• fluid temperature
• flow rate
NOTE: The original scale factor is recorded
by the factory on the back of the lever. See
Figure 2-B.
Scale Factor Calculation
IMPORTANT: Dispense the fluid at the nor-
mal flow rate in the Manual mode of opera-
tion.
1. Dispense any amount of fluid greater than 1 gallon
(3.8 liters) into an appropriate-sized graduated beaker.
2. Record the amount dispensed and the value displayed
on the meter.
3. Insert a blunt tool (5/32 "allen wrench) into the access
hole in the back of the meter.
•See
Figure 4.
4. Press and hold the tool for 2 seconds.
• The screen begins to flash and then displays the
current scale factor and unit of measure.
• The current unit of measure flashes.
5. Record the current scale factor.
6. Divide the value of the amount dispensed by the value
displayed on the meter. Multiply this product by the
existing scale factor. The product is the new scale
factor.
EXAMPLE: Exactly 4 quarts were dis-
pensed into the beaker and the meter regis-
tered 4.16 quarts. If the existing scale factor
is 0.957, a new scale factor of 0.920 must be
entered.
(4 ÷ 4.16) x 0.957 = 0.920
Change the Scale Factor
7. Press the RESET button.
• The first digit of the scale factor flashes.
8. Press the TOTAL button until the required value
appears.
NOTE: The first digit can be set to 0 or 1.
All remaining digits to the right of the deci-
mal point (comma) have a full range from
0 to 9.
9. Press the RESET button.
• The next digit of the scale factor flashes.
10. Repeat steps 8 and 9 for all digits.
11. Once the last digit is set, press the RESET button.
• The pulse delay factor (PS) screen appears.
• See Figure 6.
IMPORTANT: The pulse delay factor should
always be set to zero. No pulse delay is
required on these control valve models.
12. Insert the tool into the access hole in the back of the
meter once again.
13. Press and hold the tool.
• The screen flashes three (3) times and then goes
blank.
14. Press the RESET button.
• The normal delivery screen appears.
Figure 6 Pulse Delay Factor Screen

Alemite Corporation 9 Revision (10-04)
Electronic Preset Metered Control Valve SER 3640
Meter Battery
A progression of warnings appear on the screen of the
meter to indicate the condition of the batteries.
First Warning
The battery low icon appears in the lower left corner of
the screen. See Figure 7.
This icon informs the user that the batteries are low
and need to be changed within one week since the icon
first appeared.
Second Warning
The AUTO icon disappears and the function is no
longer available. The valve will still operate in manual
mode and measure flow.
Third Warning
The screen goes blank. No power is available to
measure flow.
NOTE: The valve will allow fluid to pass
but will not record the amount used.
Changing the Battery
The meter’s circuit board assembly retains totals and
programmed values when the batteries are removed from
the valve.
NOTE: Refer to Figure 2-B for component
identification on the following procedures.
1. Remove Screws (43) that secure Battery Door (42) to
Bottom Case (41).
• Separate the Battery Door (with batteries) from the
Case.
2. Remove the Batteries from the Battery Door.
WARNING
Recycle or dispose the used battery prop-
erly. Do not burn or puncture the battery. Toxic
materials may be emitted which can cause per-
sonal injury.
CAUTION
Avoid touching the flat surfaces of the new battery.
Skin oils can cause battery deterioration. Clean
any suspect battery with alcohol prior to installa-
tion.
3. Install the new AA alkaline Batteries into the Door
• Make sure the positive terminal on each Battery
coincides with the positive indicator mark on the
Battery Door.
4. Position the Battery Door to the Bottom Case.
5. Insert the Screws into the Battery Door.
• Tighten the Screws securely.
Figure 7 Battery Low Icon

Revision (10-04) 10 Alemite Corporation
SER 3640 Electronic Preset Metered Control Valve
4. Remove V-Block (51) and Spring (53) from the Stem.
5. Unscrew Screw Assembly (57) from the Angle Body.
6. Remove Washer (56) from the Screw Assembly.
7. Remove Gasket (55) from the Angle Body.
Overhaul
NOTE: Refer to Figure 2-A and 2-B for
component identification on the major com-
ponents of the valve assembly.
Prior to performing any maintenance procedure, the
following safety precautions must be observed. Personal
injury may occur.
WARNING
Do not use halogenated hydrocarbon sol-
vents such as methylene chloride or 1,1,1 trichlo-
roethane in this valve assembly. An explosion can
result within an enclosed device capable of con-
taining pressure when aluminum and/or zinc-
plated parts come in contact with halogenated
hydrocarbon solvents.
Release all pressure within the system prior to
performing any overhaul procedure.
• Disconnect the air supply line from the pump
motor.
• Into an appropriate container, operate the
control valve to discharge remaining pressure
within the system.
Never point a control valve at any portion of your
body or another person. Accidental discharge of
pressure and/or material can result in personal
injury.
Read each step of the instructions carefully. Make
sure a proper understanding is achieved before
proceeding.
Disassembly
Extensions and Nozzles
1. Unscrew the extension assembly from Control Valve
Assembly (11).
2. Separate the components of the extension assembly.
Non-Drip Nozzle (Automatic w/ Manual Lock)
1. Unscrew Nozzle (49) from Angle Body (54).
2. Remove O-Ring (50) from the Nozzle.
3. Remove Stem (52) from the Nozzle. Figure 8 Nozzle Assembly 318400-2 - Exploded View
Item
No. Part No. Description Notes Qty
49 Nozzle 1
50 O-Ring, 1/2 " ID x 5/8 " OD 1
51 V-Block 1
52 Stem 1
53 Spring 1
54 Body, Angle 1
55 Gasket 1
56 Washer 1
57 Screw Assembly 1
Legend:
Part numbers left blank are not available separately
designates a repair kit item
Repair Kit
Part No. Kit Symbol Description
393518 Kit, Repair

Alemite Corporation 11 Revision (10-04)
Electronic Preset Metered Control Valve SER 3640
Control Valve Assembly
Battery Door
1. Remove Screws (43) that secure Battery Door (42) to
Bottom Case (41).
• Separate the Battery Door (with batteries) from the
Bottom Case.
Valve Case
2. Remove Screws (43) that secure Case Cover (44) and
Partition (45) to the Bottom Case.
• Remove the Case Cover and the Partition from the
Bottom Case.
3. Remove four Screws (46) that secure Bottom Case (41 )
to Housing (37).
4. Push the Battery terminals from the Bottom Case.
• Separate the Bottom Case from the Housing.
5. Remove four Screws (18) that secure the Housing to Top
Case (16).
6. Remove one additional Screw (17) that secures the Top
Case to the Housing.
• Separate the Top Case from the Housing.
7. Remove Keypad (19) from the Top Case.
Solenoid
8. Carefully pull the terminal connector from
Solenoid (48).
9. Unscrew the Solenoid from the Housing.
10. Remove Detent Ball (47).
Circuit Board and Metering Gears
11. Remove three Screws (22) that secure Circuit Board
(21) to Housing Cover (33).
• Remove the Circuit Board from the Housing.
NOTE: The lower right-hand screw contains
external tooth washer (23).
12. Remove Screws (32) that secure the Housing Cover to
the Housing.
• Remove the Housing Cover from the Housing.
13. Remove Gears (35 and 36) and O-Ring (34) from the
Housing.
Valve Mechanism
14. Remove Stop Pin (20) from Nut (24).
15. Unscrew the Nut from the Housing.
• Remove O-Ring (26) and Seal (25) from the Nut.
16. Remove Spring (27), Valve (30) [with
O-Ring (28), Back-Up Ring (29), and Seal (31)] from
the Housing.
Lever Mechanism
IMPORTANT: Use care not to lose Spring
(40) during the removal of Lever (39).
17. Remove Roll Pin (38) that secures Lever (39) to the
Housing as required.
• Remove the Lever and Spring (40) from the Housing.
Swivel
18. Unscrew Swivel (13) from the Valve’s Housing.
19. Remove O-Ring (12), O-Ring (15), and Screen (14)
from the Swivel.
Clean and Inspect
1. Clean all metal parts in cleaning solvent. The solvent
should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Closely inspect the mating surfaces of all components
for any imperfections. Ensure a smooth and clean
contact is obtained when assembled.
4. Closely inspect the mating surfaces of Cover (33) and
Housing (37) for any imperfections. Ensure a smooth
and clean contact is obtained when assembled.

Revision (10-04) 12 Alemite Corporation
SER 3640 Electronic Preset Metered Control Valve
Assembly
NOTE: Prior to assembly, certain compo-
nents require lubrication in clean oil. Refer
to Table 3 for details.
Control Valve Assembly
Lever Mechanism
1. Install and hold Spring (40) onto Housing (37).
2. Position and hold Lever (39) onto the Housing.
3. Install Roll Pin (38) that secures the Lever and Spring
to the Housing.
Valve Mechanism
4. Install Valve (30) [with O-Ring (28), Back-Up Ring
(29), and Seal (31)] into the Housing.
5. Install Spring (27) into the Valve Assembly.
6. Install O-Ring (26) onto Nut (24).
7. Install Seal (25) into the Nut.
8. Screw the Nut into the Housing.
• Tighten the Nut securely.
9. Install Stop Pin (20) [long end first] into the Nut.
Metering Gears
CAUTION
Position the Gear with the magnets correctly in the
Housing. Meter will not function properly.
10. Install Gear (36) with the magnets into the Housing.
• Make sure to locate the Gear properly in the
Housing. See Figure 9.
11. Install additional Gear (35) into the Housing.
• Make sure this Gear engages the magnet Gear
perpendicularly.
IMPORTANT: Rotate the Gear assembly by
hand. Make sure the gear teeth are properly
engaged.
12. Install and seat O-Ring (34) into the oval groove in the
Housing.
13. Position Housing Cover (33) onto the Housing.
14. Install Screws (32) that secure the Housing Cover to
the Housing.
• Tighten the Screws in a crisscross pattern to 90 inch
pounds (10.2 Nm).
Circuit Board
15. Position the Housing assembly with Housing Cover
facing up.
16. Thread the wires from Circuit Board (21) through the
upper right hand openings in the Housing.
NOTE: The battery terminal wire threads
through the larger opening.
17. Position the Circuit Board to the Housing.
18. Install Screws (22) that secure the Circuit Board
Assembly to the Housing Cover.
NOTE: The lower right-hand screw contains
external tooth washer (23).
Item No. Description Item No. Description
12 O-Ring 31 Seal
25 Seal 34 O-Ring
26 O-Ring 50 O-Ring, 1/2 " ID x 5/8 " OD
28 O-Ring
Table 3 Components Lubricated in Clean Oil
Figure 9 Metering Gears

Alemite Corporation 13 Revision (10-04)
Electronic Preset Metered Control Valve SER 3640
Solenoid
19. Drop Detent Ball (47) into the hole in the Housing.
20. Screw Solenoid (48) into the Housing securely.
21. Carefully push the terminal connector [no polarity] onto the
Solenoid pins.
22. Install Keypad (19) into the holes of the Circuit Board
Assembly.
23. Install Top Case (16) onto the Housing.
24. Install Screws (18) that secure the Housing to the Top Case.
• Tighten the Screws securely.
25. Install one additional Screw (17) that secures the Top Case to
the Housing.
• Tighten the Screw securely.
26. Install and seat each Battery terminal onto Bottom Case (41).
• Make sure each terminal is fully seated.
27. Position the Bottom Case over the Lever and onto the
Housing.
• Route the wiring properly with no kinks.
NOTE: The Bottom Case may contact the Sole-
noid connector. This is permissible.
28. Install Screws (46) that secure the Bottom Case to the
Housing.
• Tighten the Screws securely.
29. Insert the tab of Partition (45) into the Bottom Case.
30. Insert the tabs of Case Cover (44) into the Bottom Case and
over the Partition.
31. Install Screws (43) that secure the Case Cover and the
Partition to the Bottom Case.
• Tighten the Screws securely.
Battery Door
32. Position Battery Door (42) [with batteries] to the Bottom
Case.
33. Insert Screws (43) into the Battery Door.
• Tighten the Screws securely.
Swivel
34. Install Screen (14) and O-Ring (15) into Swivel (13).
NOTE: O-Ring (15) is slightly smaller than O-Ring
(12).
35. Install O-Ring (12) onto the Swivel.
36. Screw the Swivel into the Valve’s Housing.
• Tighten the Swivel securely.
Extension and Nozzles
Non-Drip Nozzle (Automatic w/ Manual Lock)
NOTE: Refer to Figure 8 for compo-
nent identification.
1. Install Gasket (55) into Angle Body (54).
2. Install Washer (56) into Screw Assembly (57).
3. Thread the Screw Assembly into the Angle Body.
• Tighten the Screw Assembly securely.
4. Install O-Ring (50) onto Nozzle (49).
5. Install and seat V-Block (51) [heel end first] onto
Stem (52).
6. Install the Stem assembly into the Nozzle.
7. Install Spring (53) into the Stem.
8. Screw the Nozzle assembly into Angle Body.
• Tighten the Nozzle securely.
Extensions
1. Connect the components of the extension
assembly and tighten securely.
2. Screw the extension assembly into Control
Valve (11).
• Tighten the extension securely.

SER 3640 Electronic Preset Metered Control Valve
Revision (10-04) 14 Alemite Corporation
Troubleshooting Chart
Control Valve Indications Possible Problems Solutions
Continuous product flow 1. O-Ring (28) worn or damaged
2. Foreign material under valve Seal (31)1. Use Valve Kit 393307-217 2. Disassemble, clean, and inspect seat
area. Check mating surfaces and use
Valve Kit 393307-217as necessary.
Locate and eliminate source of foreign
material.
Reduced or zero flow 1. Gears (35 and 36) clogged
2. Clogged Screen (14)
3. Clogged system
4. Gears (35 and 36) installed incorrectly
1. Overhaul metering gear cavity
2. Clean Screen (14)
3. Clean system filter
4. Make sure the gears mesh properly
No product flow Manual Nozzle (2, 4, or 10) not open Open Nozzle (2, 4, or 10)
Leakage at Top Case (16) or
Bottom Case (43)1. Seal (25) worn or damaged. 2. O-Ring (26) worn or damaged
3. Initial tightening of Screws (32) not
sufficient
4. O-Ring (34) worn or damaged
1. Use Valve Kit 393307-217
2. Replace O-Ring (26)
3. Tighten Screws (32) in a crisscross
pattern to 90 inch pounds (10.2 Nm).
4. Replace O-Ring (34)
Leakage at Swivel
Assembly (13)1. Swivel internal seal worn or damaged. 2. Initial tightening of Swivel Assembly
(13) not sufficient
3. O-Ring (12) worn or damaged.
1. Use Swivel Kit 393307-219
2. Tighten Swivel Assembly (13)
3. Replace O-Ring (12)
Leakage at Valve Assembly Seal (31) worn or damaged. Use Valve Kit 393307-217
Leakage at front end of Nozzle Nozzle damaged Replace Nozzle
Leakage at Extension Assembly 1. Initial tightening not sufficient
2. Thread sealant missing or inadequate 1. Tighten leaking connection 2. Apply thread sealant* to male pipe
threads
Meter Indications Possible Problems Solution
Battery indicator appears on
display 1. Weak Batteries 2. Dirty contacts 1. Replace Batteries 2. Clean Batteries and terminals
The AUTO icon disappears
from the display 1. Weak Batteries 2. Dirty contacts 1. Replace Batteries 2. Clean Batteries and terminals
Display blank 1. Dead Batteries
2. Batteries installed incorrectly
3. Dirty contacts
1. Replace Batteries
2. Make sure the positive terminal on
Battery coincides with the positive
indicator mark on the Battery Door
3. Clean Batteries and terminals
Meter is not accurate 1. Incorrect scale factor
2. Flow rate above maximum
3. Flow rate below minimum
1. Change scale factor
2. Decrease flow rate
3. Increase flow rate
Meter does not count and the
flow rate is normal 1. Gears (35 and 36) installed incorrectly
2. Circuit Board (21) defective
1. Make sure to locate the gears properly
in the Housing
2. Use Circuit Board Kit 393307-203
* Do not apply thread sealant to the first two (2) threads. Contamination can occur.
Changes Since Last Printing
Added Model 3644-C