Alemite 3690-D Series User manual

Service guide
Date of issue June 2022
Form number 670868
Version 2
-C, -D*, -C, -C, -C
Preset metered control valve
*Indicates change.

Contents
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Explanation of signal words
for safety . . . . . . . . . . . . . . . . . . . . . . . . . 
Description. . . . . . . . . . . . . . . . . . . . . . . 4
Operation . . . . . . . . . . . . . . . . . . . . . . . . 4
Emergency release mechanism . . . . . . . 
Preset metered control valve
models -C, -D*,
-C, -C, -C. . . . . . . . . . . . 
Preset metered control valve . . . . . . . . . 
Overhaul. . . . . . . . . . . . . . . . . . . . . . . . . 5
Disassembly. . . . . . . . . . . . . . . . . . . . . . 5
Metered control valve . . . . . . . . . . . . . . . 
Shroud, pawl, and register assembly . . . 
Metering mechanism assembly . . . . . . . 
Inlet swivel, valve, guard, and
lever assembly . . . . . . . . . . . . . . . . . . . . 
Clean and inspect . . . . . . . . . . . . . . . . . 6
Assembly . . . . . . . . . . . . . . . . . . . . . . . . 6
Metered control valve . . . . . . . . . . . . . . . 
Metering mechanism assembly . . . . . . . 
Registry assembly. . . . . . . . . . . . . . . . . . 
Lock pawl. . . . . . . . . . . . . . . . . . . . . . . . . 
Components lubricated in clean oil . . . . 
Pointer, cam and dial assembly . . . . . . . 
Lever assembly . . . . . . . . . . . . . . . . . . . . 
Valve and inlet swivel assembly . . . . . . . 
Extension . . . . . . . . . . . . . . . . . . . . . . . . 
Troubleshooting chart . . . . . . . . . . . . . 8
Common parts list. . . . . . . . . . . . . . . . . 9
Non-common parts list . . . . . . . . . . . . 9
Illustrated parts breakdown . . . . . . . . 10


NOTE
Emphasizes useful hints and
recommendations as well as
information for efficient and trouble-
free operation.
CAUTION
Indicates a dangerous situation that can
lead to light personal injury or property
damage if precautionary measures are
ignored.
WARNING
Indicates a dangerous situation that
could lead to death or serious injury if
precautionary measures are ignored.
DANGER
Indicates a dangerous situation that will
lead to death or serious injury if
precautionary measures are ignored.
Explanation of signal
words for safety
Safety
Read and carefully observe installation
instructions before installing/operating/
troubleshooting the assembly. Assembly
must be installed, maintained and repaired
exclusively by persons familiar with
instructions.
Install assembly only after safety
instructions and this guide have been read
and are completely understood.
Adequate personal protection must be
used to prevent splashing of material on skin
or in eyes.
Always disconnect power source
(electricity, air or hydraulic) from pump when
it is not being used.
Equipment generates high fluid pressure.
Extreme caution should be used when
operating equipment as material leaks from
loose or ruptured components can inject
fluid through skin and into body. If any fluid
appears to penetrate skin, seek attention
from doctor immediately.
Do not treat injury as a simple cut. Tell
attending doctor exactly what type of fluid
was injected.
Any other use not in accordance with
instructions will result in loss of claim for
warranty or liability.
• Do not misuse, over-pressurize, modify
parts, use incompatible chemicals, fluids,
or use worn and/or damaged parts.
• Do not exceed stated maximum working
pressure of pump or of lowest rated
component in system.
• Always read and follow fluid
manufacturer’s recommendations
regarding fluid compatibility, and use of
protective clothing and equipment.
• Failure to comply may result in personal
injury and/or damage to equipment.


1)
A
A
Description
Preset metered valves are designed to
dispense preset quantities of fluid lubricants.
Each model is equipped with an inlet swivel,
a high-volume manual nozzle, and rigid or
flexible extension.*
The models differ in the units of measure
that are metered and the face dial range
(³Table 1 for details).
A totalizer keeps a lifetime record of the
amount dispensed in a unit of measure
labeled on the dial.
These models are also equipped with an
internal filter screen to prevent damaging
contaminants from entering the meter.
Operation
1 Turn pointer counterclockwise to
required quantity of fluid to be
dispensed.
2 To dispense, depress lever until it locks.
Lever disengages automatically once
preset amount is delivered.
Emergency release
mechanism
To stop preset delivery before completion,
move lock pawl to right (³Fig. 1). This
releases the lever and stops delivery.
Table 1
Preset metered control valve models 3690-C, 3690-D*, 3691-C, 3693-C, 3696-C
Register units
Valve model Inlet Current (w/range) Totalizer Accuracy Maximum pressure
-C 1/2in NPTF
(internal)
Quart (  60) Gallon ± .%   psi (69 bar)
-D* 1/2in NPTF
(internal)
Quart (  60) Gallon ± .%   psi (69 bar)
-C 1/2in NPTF
(internal)
Gallon (  15) Gallon ± .%   psi (69 bar)
-C 1/2in NPTF
(internal)
Liter (  60) Liter ± .%   psi (69 bar)
-C 1/2in NPTF
(internal)
Quart (  16) Quart ± .%   psi (69 bar)
*Indicates change.
*Indicates change.
Fig. 1
Preset metered control valve
NOTE
Do not turn pointer clockwise.
Failure to comply may result in
damage to equipment.
) Lock pawl


Overhaul
Prior to performing any maintenance on
equipment, the following safety precautions
must be observed. Personal injury may
occur.
WARNING
Do not use halogenated hydrocarbon
solvents such as methylene chloride or
,,- trichloroethane in this valve.
Explosion can result when aluminum
and/or zinc-plated parts in valve come
in contact with halogenated
hydrocarbon solvents.
Release all pressure within system
prior to performing any overhaul
procedure.
•Disconnect air supply line from pump
motor.
• Operate control valve to discharge
remaining pressure within system
into appropriate container.
Never point control valve at any portion
of body or another person. Accidental
discharge of pressure and/or material
can result in injury. Read each step of
instructions carefully. Make sure proper
understanding is achieved before
proceeding.
Failure to comply may result in death
or serious injury.
Metering mechanism
assembly
17 Unscrew cap (3) from housing (8).
18 Remove o-ring (4) from cap (3).
19 Remove chamber and pinion assembly (5),
planetary gear (6), and spindle and gear
assembly (7) from housing (8).
20 Remove gland nut (11) from housing (8).
21 Remove o-ring (10) from gland nut (11).
22 Remove washer (9) from housing (8).
Inlet swivel, valve, guard,
and lever assembly
23 Unscrew swivel assembly (35) from
adapter (34).
24 Unscrew adapter (34) from housing (8).
25 Remove hand guard (32) and o-ring (33)
from adapter (34).
26 Remove screen (31), spring (30), valve
assembly (28), and valve sleeve (29)
from housing (8).
27 Remove screws (38) that secure lever
assembly (40) and lock bar and screw
assembly (39) to cam (37).
28 Remove lever assembly (40) and lock bar
and screw assembly from cam (37).
29 Push cam (37) from housing (8).
30 Remove quad rings (36) from cam (37).
Disassembly
NOTE
Refer to Fig. IPB 1, page 10 for
component identification on all overhaul
procedures.
Metered control valve
1 Unscrew extension (2) from cap (3).
2 Unscrew nozzle assembly (1) from
extension (2).
Shroud, pawl, and register
assembly
3 Unscrew screws (26) that secure
shroud (25) to housing (8).
4 Remove shroud (25) from housing (8).
5 Turn pointer (24) counter-clockwise until
access hole in pointer lines up with
setscrew.
6 Loosen setscrew that secures pointer to
spindle and gear assembly (7).
7 Remove dial (27) cam (17), and
pointer (24) as assembly from spindle
and gear assembly (7).
8 Carefully pry pointer (24) from cam
assembly (17) and dial (27) to separate
components.
9 Remove springs (18) and rollers (19)
from cam (17).
10 Remove retaining ring (15) that secures
lock pawl (14) to housing (8).
11 Remove lock pawl (14) and spring (16)
from housing (8).
12 Remove pointer gear (23) and
washer (22) from register assembly (20).
13 Loosen setscrew (12) that secures worm
gear (13) to spindle and gear
assembly (7).
14 Remove worm gear (13) from spindle
and gear assembly (7).
15 Remove screws (21) that secure register
assembly (20) to housing (8).
16 Remove register assembly (20) from
housing (8).


NOTE
Prior to assembly, certain components
require lubrication (³ Table 2 for
details).
NOTE
Refer to Fig. IPB 1, page 10 for
component identification.
Clean and inspect
1 Clean all metal parts in cleaning solvent.
Solvent should be environmentally safe.
2 Inspect all parts for wear and/or
damage. Replace as necessary.
3 Closely inspect mating surfaces of all
components for any imperfections.
Ensure smooth and clean contact is
obtained when assembled.
Metered control valve
Metering mechanism assembly
1 Install and seat washer (9) into head of
housing (8).
2 Install o-ring (10) into gland nut (11).
3 Screw gland nut (11) into housing (8).
4 Tighten gland nut (11) securely.
5 Position chamber and pinion
assembly (5) gear end upward.
6 Install planetary gear (6) into chamber
and pinion assembly (5).
7 Position spindle and gear assembly (7)
onto chamber and pinion assembly (5).
8 With spindle and gear assembly (7)
pointed upward, install entire
subassembly into housing (8).
9 Install o-ring (4) onto cap (3).
NOTE
Rotate spindle and gear assembly (7) so
flat of shaft points between posts of
register assembly. This aids in
installation of worm gear (13).
10 Install hand guard (32) onto housing (8).
11 Screw cap (3) into housing (8) and
tighten cap (3) to  ft.lbf. (47 Nm).
Register assembly
12 Install register assembly (20) onto
housing (8). Make sure register seats on
four pins.
13 Install screws (21) that secure register
assembly to housing (8) and tighten
securely.
14 Apply threadlocker to setscrew (12) and
install into worm gear (13).
15 Install worm gear (13) with spur gear
upward onto shaft of spindle and gear
assembly (7).
NOTE
Make sure gears mesh evenly.
16 Install washer (22) onto bottom post of
register assembly.
17 Install pointer gear (23) with flat surface
downward onto washer.
Lock pawl
20 Install and seat spring (16) with flat
portion first onto post on housing (8)
with spring (16) seating in notch.
21 Install lock pawl (14) onto housing post.
Table 2
Components lubricated in clean oil
Item Description
 O-ring
 Washer
 O-ring
 O-ring
 Quad-ring
Assembly
NOTE
Do not allow subassembly to shift
during installation or once installed.
Failure to comply may result in
damage to equipment.
NOTE
Make sure worm gear (13) setscrew
points toward flat on spindle and gear
assembly (7). Verify gear meshes
properly with register gear.
18 Move worm gear (13) straight up or
down so gear wheel meshes evenly with
pointer gear.
19 Tighten setscrew securely.
NOTE
Make sure lock pawl (14) properly
engages spring (16).
22 Install retaining ring (15) that secures
lock pawl (14) to post.
NOTE
Use care passing o-ring (10).


NOTE*
Do not apply thread sealant to first two
threads. Contamination can occur.
Apply thread sealant to all other pipe
thread connections prior to assembly.
NOTE
Make sure lock pawl (14) fits properly
into hole of dial (27).
Pointer setscrew must point toward
flat on spindle and gear assembly (7).
NOTE
Make sure three holes on dial engage
with register posts.
NOTE
Make sure spring (18) is against
right-angled end of notch in cam (17).
Pointer, cam and dial
assembly
23 Install dial (27) onto cam (17).
24 Install rollers (19) into cam.
25 Install springs (18) into cam (17).
26 Install and seat pointer (24) onto
cam (17).
27 Install and seat pointer (24), cam (17),
and dial assembly (27) onto shaft of
spindle and gear assembly (7).
28 Tighten pointer setscrew onto shaft of
spindle and gear assembly (7).
29 Turn pointer (24) counter-clockwise and
set to zero.
30 Install shroud (25) with notch downward
onto housing (8).
31 Install screws (26) that secure shroud to
housing (8).
32 Tighten each screw securely.
Lever assembly
33 Install quad rings (36) onto each end of
cam (37).
34 Install cam (37) into housing (8).
35 Install lever assembly (40) onto cam (37).
48 Screw extension (2) into cap (3).
49 Tighten extension securely.
50 Screw nozzle assembly (1) onto
extension.
51 Tighten nozzle assembly securely.
NOTE
Use care passing quad rings (36).
NOTE
Reposition cam (37) as required to
ensure lever assembly properly meshes.
36 Install lock bar and screw assembly (39)
onto cam (37) with screw in lock bar so
that screw assembly meshes properly
with lock pawl.
37 Install screws (38) that secure lever
assembly and lock bar and screw
assembly to cam.
38 Tighten screws securely.
Valve and inlet swivel
assembly
39 Install valve sleeve (29) with unslotted
end into housing (8).
40 Install valve assembly (28) stem first into
small end of spring (30).
41 Install valve assembly and spring
horizontally into housing (8) so that valve
assembly does not shift.
42 Install screen (31) into spring.
43 Install o-ring (33) onto adapter (34).
44 Screw adapter into housing (8) and
tighten to  ft. lbs. (26 Nm).
45 Screw swivel assembly (35) with thread
sealant into adapter.
46 Tighten swivel assembly securely.
Extension
*Indicates change.


Troubleshooting chart
Control valve indications Possible problems Solutions
Reduced or zero flow. . Filter screen (31) clogged.
. Clogged system.
. Removed filter screen (31) and clean or replace.
. Clean or replace system filter.
No product flow. . Nozzle (1) not open. . Open nozzle (1).
Continuous product flow. . Foreign material on valve assembly (28).
. Valve assembly (28) worn or damaged.
. Disassemble, clean and inspect seat area. Check
mating surfaces and replac valve assembly (28) as
necesary. Locate and eliminate source of foreign
material.
. Replace valve assembly (28).
Leakage at swivel assembly (35). . Swivel assembly (35) loose.
. Seal worn or damaged.
. Tighten swivel assembly (35).
. Replace swivel assembly (35).
Leakage at cam (37). . Quad-rings (36) worn or damaged. . Replace quad-rings (36).
Leakage at front end of nozzle. . Nozzle damaged. . Replace nozzle.
Leakage at extension assembly. . Poor initial tightening.
. Thread sealant missing or inadequate.
. Tighten leaking connection.
. Apply thread sealant ) to external pipe threads.
Lock pawl (14) does not engage with screw on
lock bar and screw assembly (39).
. Screw out of adjustment. . Adjust screw so it fully engages lock pawl (14) in
upright position when lever (40) is pulled.
) Do not apply thread sealant to the first two (2) threads. Contamination can occur.


Common parts list
Item Decsription Part number Quantity
Non-drip nozzle, high-volume manual  
 Cap 
 O-ring (Buna-N) - 
 Gear, planetary (included w/item )) 
 Housing 
 Washer (Buna-N) - ) 
 O-ring (Buna-N) - ) 
 Nut, gland ) 
 Setscrew 
 Pawl, lock - 
 Ring, retaining (included w/item ) - 
 Spring, lock pawl - 
 Spring - 
 Roller - 
 Screw - 
 Washer 
 Pointer (w/ setscrew) - 
 Shroud - 
 Screw 
 Valve assembly (Buna-N) - 
 Sleeve, valve (included w/item ) - 
 Spring - 
 Screen, filter - 
 Guard, hand - 
 O-ring - 
 Adapter, 1/2in NPTF (internal) - 
 Swivel, 1/2in NPTF (external) x1/2in NPTF (internal)  
 Quad-ring (Buna-N) - 
 Cam - 
 Screw - 
 Lock bar and screw assembly - 
 Lever assembly - 
Part numbers left blank are not available separately.
) Repair kit - packing gland kit
) Measures in liters
) Quart with gallon totalizer
) Gallon with gallon totalizer
) Liter with liter totalizer, - range
) Quart with quart totalizer
*Indicates change.
Non-common parts list
Item Description -C -D* -C -C -C Quantity
 Extension  -    
Chamber and pinion assembly - - - ) - 
Spindle and gear assembly - - - ) -
 Gear, worm - - 
 Cam - - - 
 Register assembly - - - - 
 Gear, pointer 
 Dial - ) ) ) - ) 


1
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9
10 11
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18
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21 22
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24
25
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33
34
35
36
37
38
39
40
36
19
1)
2)
2)
2)
3)
4)
A
A
Fig. IPB 1
Preset metered control valve, exploded view
) Apply thread sealant
) Part of packing gland kit -
) Apply threadlocker
) Setscrew access hole


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

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