1.2 GENERAL SYSTEM OPERA TION .............................. 1-1
1.1GENERAL
1.1.1Standard Components. A wide choice of modular
components may be assembled to meet a given application.
1.1.1.1 All Modu-Flo systems consist of the following
components:
a.A reservoir or tank for holding the lubricant. Reservoirs
are cylindrical units for grease or oil and are equipped
with a spring-loaded follower for grease applications.
Tanks are rectangular and are used for applications
using oil. Further information on reservoirs may be
found in Section 2.
b.A pump for dispensing a specific volume of lubricant.
Pumps may be pneumatically or hydraulically operated.
A selection of power ratios and displacement ranges
are available. Further information on pumps may be
found in Section 3.
c.A manifold attached to the base of the reservoir to
provide a mounting base for any pump. The manifold
has all the necessary porting to allow lubricant to flow
from the reservoir to the pump and from the pump to the
lubricant lines. Ports are also provided for pneumatic or
hydraulic inputs to operate the pump. Accessories such
as gauges and blowout assemblies are available and
may be connected to the manifold. If the pump is to be
located some distance from the reservoir, a wallmounted manifold is available. Further information on
manifolds is contained in Section 4.
Modu–Flo®
System
1.1.2Modu-Flo Options.
1.1.2.1 Options which are available for any system include
the following:
a.Low-level switches which mount to the reservoir or tank
and provide a low-level fault signal to a customerdesignated component. Level switch options are
described in Section 5.
b.High-pressure indicators which are installed into the
pump outlet circuit and provide an over-pressure signal
to external components. Pressure switch options are
discussed in Section 6.
c.A pneumatic solenoid valve which mounts directly to the
manifold. The solenoid valve is a three-way, normallyclosed type. Use of the solenoid allows the pump to be
cycled by various controller options. The solenoid is
equipped with a manual override button which may be
used to simplify system testing, line filling and line
bleeding.
d.Several types of controllers are used which can be
adapted to the system. Controller options are discussed in Section 8. Controllers available are as
follows:
(1) Timers which may be set to cycle the pump at given
intervals. Both AC and DC models are available.
(2) A TC-1000 timer can operate the lube system on
either a time or machine cycle basis. It is available
in 12 or 24 VDC or 115 or 230 VAC.
1-1
(3) A WMP Maxi-Monitor which provides a dispense
signal on either a time or machine cycle basis. The
WMP also monitors and displays the status of the
lube system it is controlling. The Maxi-Monitor is
available in either 115 or 230 VAC.
Modu-Flo® System42000
1.2GENERAL SYSTEM OPERATION
1.2.1Figure 1-1 shows a functional schematic of a Modu-
Flo system.
1.2.1.1 The following steps outline the operating sequence
of a Modu-Flo system:
a.Lubricant stored in the reservoir or tank flows to the
manifold. The manifold may be mounted directly to the
reservoir or tank, or it may be mounted on a wall.
b.The manifold directs lubricant into the pump to fill the
pump chamber.
c.A controller energizes a solenoid valve to dispense and
the solenoid sends air or hydraulic fluid to the manifold.
Porting in the manifold directs the air or hydraulic fluid to
the pump, causing the pump to dispense lube to the
manifold outlet port.
d.When the controller releases the solenoid, air or
hydraulic fluid is redirected, causing the pump to retract.
On single-acting pneumatic pumps a spring pushes the
pump to the retracted position.
e.Lubricant from the reservoir flows through the manifold
and refills the empty chamber in the pump.
f.A pressure gauge, blowout disc, and high-pressure
switch are options which may be connected to the output
lube on the manifold. A signal from the pressure switch
can be used to actuate an alarm or warning light.
g.Low-level switch options are available for all tanks or
reservoirs. The switch provides an electrical signal
when lubricant level is low.
2.6.2 Oil Tank Maintenance .................................. 2-11
2.6.3 Disassembly of Oil Tanks........................... 2-11
2.6.4 Assembly of Oil Tanks ................................. 2 -11
2.6.5 Oil Tank Parts List ....................................... 2 -11
2.1DESCRIPTION
2.1.1Reservoir Description. Reservoirs are cylindrical in
shape and are used for either grease or oil lubricants. If a
reservoir is to be used for grease it will be equipped with a
spring-loaded follower which will apply pressure on the
grease to force it into the pump. Reservoirs use cylinders
made of metal or plastic. If a metal cylinder is used, the
reservoir will be equipped with a level indicator to allow a
visual check of lubricant level. Plastic cylinders are clear,
allowing personnel to actually see the amount of lubricant
present. The base of all reservoirs has the necessary
tapped holes for either direct mounting of a manifold or for
installing hose or tubing to a remote-located manifold.
2.1.2Tank Description. Tanks are rectangular
weldments used for holding oil. All tanks are equipped with
a sight glass to allow personnel to easily check the lubricant
level. A pad mounted to the tank base provides the necessary tapped holes for either direct mounting of a manifold or
for installing hose or tubing to a remote-located manifold.
2.1.3Reservoirs and Tanks Available. Table 2-1 lists the
tanks and reservoirs available for use. Listings in the option
column are used to identify the reservoir or tank selected
when a Modu-Flo system is ordered. The option used is
designated by the entry in the ordering code as shown
below:
MPP - XXX - XXX - XX - XX - XX - XX - XX - XXX - XX
Reservoir Option
2.2MOUNTING INSTRUCTIONS
2.2.1Reservoirs and tanks may be mounted to any
vertical surface. All units have 7/16 inch holes for attaching
bolts or screws. Cylindrical reservoirs have two holes, six
inches apart, drilled in the base bracket. All tanks have four
holes drilled in flanges according to the following rectangular dimensions:
9-7/8 wide by 7 inches high for T1 tanks
11-1/8 wide by 7 inches high for T2 tanks
16-3/8 wide by 7 inches high for T3 tanks
2.2.1.1 Make sure the mounting location allows clearance
for any accessories attached to the tank or reservoir. Oil
reservoirs and all tanks have a fill cup on the top. Make sure
there is enough room above the fill cup to permit personnel
to perform a filling operation without difficulty. Drill the required holes and attach the reservoir or tank to the vertical
surface. Securely tighten all attaching hardware. Make sure
that the reservoir or tank is level.
2-1
Modu-Flo® System42000
T able 2-1. Reservoirs and Tanks
Part NumberType (Use)Reservoir CapacityOption
521-001-060Tank (oil)12 pint (5.68 liters)T1
* These assemblies are not available through the normal MPP system, only by ordering the full part number.
*
*
*
2.3PREPARATION FOR USE
NOTE
Before filling any reservoir or tank, a manifold
should be attached to the base. The manifold
has a check valve built into it which will prevent
the lubricant from dripping out of the reservoir or
tank. If the system has a remote-located manifold, make sure there is hose or tubing connected from the bottom of the reservoir or tank to
the remote manifold.
2.3.1Filling Oil Reservoirs and T anks. Reservoirs and
tanks for oil have a fill cup mounted on top. Wipe the area
around the fill cup to avoid contamination during filling. Open
the fill cup cap and slowly pour the oil into the fill cup. A
strainer attached to the fill cup will remove large particles
which may be present in the oil. When filling is complete,
close fillcup cap and wipe any spillage.
2.3.2Filling Grease Reservoirs.
WARNING
If a high-pressure, high-volume supply pump is
used to fill grease reservoirs, excess pressure
may not be completely released by the bleed
hole in the reservoir wall. This could cause the
reservoir to fracture, exposing personnel to flying
particles and lubricant. Safety glasses must be
worn during filling operations and the supply
pump must be turned off and disconnected
when filling is complete.
2.3.2.1 Filling of grease reservoirs requires that an external
supply source be connected to the fill stud located in the
base of the reservoir. To avoid introducing air into the system,
make sure there is enough grease in the supply source to fill
R
the reservoir without being disconnected. Operate the supply
source at a steady speed to allow air-free filling of the reservoir. Too fast of a fill speed may result in air pockets. The
level of grease is checked by visual means. In reservoirs
with plastic cylinders, the grease level may be seen through
the cylinder. Reservoirs with metal cylinders have a levelindicator rod mounted on the cap which will indicate when
the fill is complete.
NOTE
Excess lube forced into the reservoir after it has
reached full level will be vented from a bleed
hole in the reservoir tube. (See Warning above.)
2.3.2.2 When filling is complete, turn off the supply source
and disconnect it from the fill stud. A check valve in the fill stud
will prevent lubricant from being forced back out. A plastic dust
cap is attached to the fill stud and should be installed over the
fill stud to keep dirt from entering the system.
NOTE
For first time grease filling, or if the grease reservoir has been allowed to go empty, open the
petcock in the bottom right side of the reservoir.
Slowly begin to fill the reservoir, allowing air
trapped under follower to exhaust out the open
petcock. When grease free of air flows from the
petcock, close petcock and continue to fill the
reservoir until follower is at vent hole in reservoir
tube (any remaining air and small amount of
grease will exit vent).
Loosen system mainline connection at pump
outlet. Operate pump until lubricant free of air
flows from outlet port. Tighten mainline connection at pump. Pump is now free of air.
Note, for extreme cases where the pump will not
take a prime, it may be helpful to inject serveral
2-2
42000Modu-Flo® System
R
ounces of heavy oil through the grease fill quick
disconnect. The pump will then prime on oil
pulling the grease behind it. If it becomes necessary to use this method, all injected oil should
be discharged at the loosened system supply
connection along with any air.
Refer to bulletin 12411 (Portable Filler-Pak) for
manual operated fill pump.
2.4GREASE RESERVOIR MAINTENANCE
(OPTIONS GP1 THROUGH GP5 AND
GM1 THROUGH GM4)
2.4.1General. Maintenance tips, disassembly, and as-
sembly procedures for grease reservoirs are discussed in
Paragraphs 2.4.2, 2.4.3 and 2.4.4. An exploded view of a
typical grease reservoir is shown in Figure 2-1 and should
be referred to during the discussion.
2.4.2Grease Reservoir Maintenance.
2.4.2.1 Maintenance on the grease reservoir consists of the
steps described below:
a.Visually inspect the reservoir for lubricant leaking
between reservoir tube (8, Figure 2-1) and base (10).
This may indicate a bad gasket (9) or that the hex nuts
(12) are not tight. Torque the nuts to 5 ft lbs. If the
leakage continues, replace gasket (9). Check for cracks
and nicks in tube (8). Replace the tube as required.
b.Visually inspect the reservoir tube (8) for dents which
may restrict the movement of the follower cups (6 and 7).
Replace the tube as required.
WARNING
Disconnect and lock out power before opening
electrical enclosures or conduit connections.
Serious injury may result from electrical shock.
2.4.3Disassembly of Grease Reservoirs. Figure 2-1
shows a typical grease reservoir but does not include other
Modu-Flo components which may be mounted to the reservoir. These components include the manifold, pump, level
switches and high-pressure blowout switches. Disassembly
of the reservoir may require that some of these components
be removed. The manifold and pump do not normally require
removal, but may be removed if desired. The level and blowout switches may or may not require removal, depending on
the level of disassembly required. The electrical connections
to the switches probably should be disconnected in order to
remove various parts without restriction of movement by the
electrical cord. The removal of these components is explained in other sections of the manual. Refer to the table of
contents to find where the components are discussed.
2.4.3.1 The disassembly procedure may be performed with
the reservoir mounted to the mounting surface. However,
some mounting locations may be too restrictive to provide
access to all components. If your particular installation requires dismounting of the reservoir, make sure the reservoir
is drained of lubricant before removing the attaching hardware. This will reduce the weight of the reservoir and reduce
the chance of spillage. The disassembly procedure is as
follows:
WARNING
Do not attempt to remove retaining ring (2) or
cable assembly (5) (Figure 2-1) (or retaining
ring (25) or guide rod (5) for Option GP5). Injury
could result from sudden expansion of spring
(4).
a.Slowly open petcock (11) and allow lubricant to be forced
from the reservoir into a bucket or similar container.
Remove fill stud (15) and petcock (11) if necessary.
Properly dispose of emptied grease.
b.Remove hex nuts (12) and lockwashers (13) from tie
rods (1). Remove tie rods (1) from cap (3).
c.Lift reservoir tube (8) from base (10) keeping reservoir
cap (3) in position on top of the tube.
d.Slide reservoir tube (8) away from reservoir cap (3) until
it is free of follower cup (7).
e.Remove gasket (9) from bottom of reservoir tube (8).
f.Further disassembly is only possible at the factory. If
damage is apparent on the follower cups (6 and 7),
cable assembly or guide rod (5), spring (4) or reservoir
cap (3) the unit cannot be serviced and the reservoir
assembly must be replaced.
2.4.4Assembly of Grease Reservoirs.
NOTE
Before assembly, lubricate followers and tube
inner diameter with the lubricant which is used
in the system.
2.4.4.1 Assemble the grease reservoir according to the
following procedure:
a.Slide reservoir tube (8, Figure 2-1) over follower cup (7)
being careful not to distort the follower cup lips. Slide
reservoir tube (8) up until it contacts reservoir cap (3).
b.Install new gasket (9) on bottom of reservoir tube (8).
c.Place reservoir tube (8) with gasket (9) on base (10) and
rotate reservoir cap (3) until holes in the cap line up with
holes in the base (10).
d.Install tie rods (1) through holes in reservoir cap (3) and
base (10).
e.Install lockwashers (13) and hex nuts (12) on tie rods (1)
and torque to 5 ft lbs.
f.Install fill stud (15), dust cap (14) and petcock (11) in
base. Make sure petcock (11) is in the closed position.
2.4.4.2 When the assembly steps listed in the above paragraph have been completed, any Modu-Flo components
which were removed to ease disassembly should be reinstalled on the reservoir.
2.4.5Grease Reservoir Parts Lists. Table 2-2 identifies
the parts indexed in Figure 2-1.
2.5OIL RESERVOIR MAINTENANCE
(OPTIONS OP1 THROUGH OP4)
2.5.1General. Maintenance tips, disassembly, and as-
sembly procedures for oil reservoirs are discussed in Paragraphs 2.5.2, 2.5.3 and 2.5.4. An exploded view of a typical oil
reservoir is shown in Figure 2-2 and should be referred to
during the discussion.
2.5.2Oil Reservoir Maintenance.
2.5.2.1 Maintenance on the oil reservoir consists of the
following:
a.Visually check for oil leakage between reservoir tube (6,
Figure 2-2) and base (8). Leakage may indicate that the
gasket (7) is defective or that nuts (9) are not tight.
Torque nuts (9) to 5 ft lbs. If leakage continues, replace
gasket (7). Check for cracks and nicks on tube (6).
Replace the tube as required.
b.Visually check screen (2) in fill cup (3) to make sure it is
not clogged. If necessary, remove the screen for cleaning.
c.Check reservoir bottom for debris. Clean as required.
WARNING
Disconnect and lock out power before opening
electrical enclosures or conduit connections.
Serious injury may result from electrical shock.
2.5.3Disassembly of Oil Reservoir. Figure 2-2 shows a
typical oil reservoir but does not include other Modu-Flo
components which may be mounted to the reservoir. These
components include the manifold, pump, level switches and
high-pressure blowout switches. Disassembly of the reservoir may require that some of these components be removed. The manifold and pump do not normally require
removal, but may be removed if desired. The level and blowout switches may or may not require removal, depending on
the level of disassembly required. The electrical connections
to the switches should be disconnected in order to remove
various parts without restriction of movement by the electrical
cord. The removal of these components is explained in other
sections of the manual. Refer to the table of contents to find
where the components are discussed.
2.5.3.1 The disassembly procedure may be performed with
the reservoir mounted to the mounting surface. However,
some mounting locations may be too restrictive to provide
access to all components. If your particular installation requires dismounting of the reservoir, make sure the reservoir
is drained of lubricant before removing the attaching hardware. This will reduce the weight of the reservoir and reduce
the chance of spillage. The disassembly procedure is as
follows:
a.Remove pipe plug (4, Figure 2-2) from base (8) and
allow oil to drain from reservoir into bucket or similar
container. Properly dispose of emptied oil.
b.Remove three hex nuts (9) and three lockwashers (10)
from tie rods (1). Remove tie rods (1) from reservoir cap
(5).
c.Remove reservoir cap (5) from reservoir tube (6).
d.Remove fill screen (2) from fill cup (3) and clean screen.
e.Remove reservoir tube (6) from base (8).
f.Remove and discard gasket (7) from reservoir tube (6).
2.5.4Assembly of Oil Reservoir.
NOTE
Before assembly, lubricate followers and tube
inner diameter with the lubricant which is used
in the system.
2.5.4.1 Assemble the oil reservoir according to the following procedure:
a.Install screen (2, Figure 2-2) in fill cup (3).
b.Install new gasket (7) on reservoir tube (6).
c.Position reservoir tube (6) on base (8) and position
reservoir cap (5) on tube.
d.Rotate reservoir cap (5) until tie rods (1) can be installed
through holes in cap and in base (8). The heads of tie
rods (1) must fit into the hexagon depressions on the
upper surface of the reservoir cap (5).
e.Install lockwashers (10) and hex nuts (9) on tie rods (1).
Torque nuts to 5 ft lbs.
f.Install pipe plug (4) in base (8).
2.5.4.2 When the assembly steps listed in the above paragraph have been completed, any Modu-Flo components
which were removed to ease disassembly should be reinstalled on the reservoir.
2.5.5Oil Reservoir Parts Lists. Table 2-3 identifies the
parts indexed in Figure 2-2.
2-7
Modu-Flo® System42000
T able 2-3. Oil Reservoir Parts List s
Item
NumberPart NumberDescriptionQuantity
185-100-080RESERVOIR ASSEMBLY, 5 pint (2.37 liters),plastic (OP1)-185-100-060RESERVOIR ASSEMBLY,12 pin t (5 .68 l ite rs),plastic (OP2)-185-100-070RESERVOIR ASSEMBLY,20 pin t (9 .46 l ite rs),plastic (OP3)-185-100-750RESERVOIR ASSEMBLY, 6 pint (2.84 liters),plastic (OP4)--
1415-700-272BOLT, Tie (5 pint, 12 pint)3
415-700-273BOLT, Tie (6 pint)3
415-700-271BOLT, Tie (20 pint)3
2534-304-003SCREEN (40 Mesh)1
3534-147-000CUP, Fill1
4508-975-000PLUG, Pipe, 1/4 inch NPT3
5521-000-600CAP, Reservoir (4” Tube) (5 pint)1
2.6.1General. Maintenance tips, disassembly and as-
sembly procedures for oil tanks are discussed in Paragraphs 2.6.2, 2.6.3 and 2.6.4. An exploded view of a typical oil
tank is shown in Figure 2-3 and should be referred to during
the discussion.
2.6.2Oil T ank Maintenance.
2.6.2.1 Maintenance on the oil tanks consists of the follow-
ing:
a.Visually check for oil leakage between the tank (9, Figure
2-3), the pump mounting pad (12) and the level sight
glass (11). Leakage in either of these areas indicates
the components are loose or that gasket (10) or o-ring
(13) is defective. The cover (1) will need to be removed
to either tighten the components or replace defective
seals.
b.Visually check fill screen (4) to make sure it is not
clogged. If necessary, remove the screen for cleaning.
c.Check that the tank is securely fastened to the wall or
supporting structures. Securely tighten any loose
attaching hardware.
WARNING
Disconnect and lock out power before opening
electrical enclosures or conduit connections.
Serious injury may result from electrical shock.
2.6.3Disassembly of Oil Tanks. Figure 2-3 shows a
typical oil tank but does not include other Modu-Flo components which may be mounted to the tank. These components include the manifold, pump, level switches and blowout switches. Disassembly of tank may require that some of
these components be removed. The manifold and pump do
not normally require removal, but may be removed if desired.
The level and blowout switches may or may not require
removal, depending on the level of disassembly required.
The electrical connections to the switches should be disconnected in order to remove various parts without restriction of
movement by the electrical cord. The removal of these components is explained in other sections of the manual. Refer
to the table of contents to find where these components are
discussed.
2.6.3.1 The disassembly procedure may be performed with
the tank mounted to the mounting surface. However, some
mounting locations may be too restrictive to provide access
to all components. If your particular installation requires
dismounting of the tank, make sure the tank is drained of
lubricant before removing the attaching hardware. This will
reduce the weight of the tank and reduce the chance of spillage. The disassembly procedure is as follows:
a.Remove pipe plug (3, Figure 2-3) from base of tank
weldment (9) and allow oil to drain into bucket or similar
container. Properly dispose of emptied oil.
b.Remove self-threading screws (2) attaching cover (1) to
tank weldment (9) and remove cover and cover gasket
(6).
c.Remove fill screen (4) from fill cup (5) and clean screen.
d.Remove two screws (7) and aluminum gaskets (8) to
release pump mounting pad (12) from tank weldment
(9). Remove and discard o-ring (13) from pump mount-
ing pad (12).
NOTE
Step e should be performed only if the sight
glass is dirty or leaking. Threads cut on nylon
studs of sight glass may prevent the sight glass
from being used.
e.Remove four self-threading nuts (14) and remove sight
glass (11) and gasket (10). Discard gasket (10) and
sight glass (11).
2.6.4Assembly of Oil Tanks.
NOTE
Before assembly, lubricate all o-rings with the
lubricant which is used in the system.
2.6.4.1 Assemble the oil tanks according to the following
procedure:
a.Install one aluminum gasket (8, Figure 2-3) on each
screw (7) and insert threads of screws through holes in
bottom of tank weldment (9).
b.Install new o-ring (13) in pump mounting pad (12) and
align threaded holes in pump mounting pad with screws
(7) protruding from bottom of tank weldment (9). Thread
screws (7) into pump mounting pad (12) until pump
mounting pad is snug against bottom of tank weldment
(9). Torque screws (7) to 10 ft lbs.
c.Position new gasket (10) on sight glass (11) and install
sight glass on tank weldment (9). Secure sight glass
(11) with four self-threading nuts (14).
d.Install screen (4) into fill cup (5).
e.Position cover gasket (6) and cover (1) on tank
weldment (9) and secure with self-threading screws (2).
f.Install pipe plug (3) in bottom of tank weldment (9).
2.6.4.2 When the assembly steps listed in the above paragraph have been completed, any Modu-Flo components
which were removed to ease disassembly should be reinstalled on the tank.
2.6.5Oil Tank Parts List. Table 2-4 identifies the parts
indexed in Figure 2-3.
3.5.4 Assembly of Hydraulic Pump Option H2 .... 3-13
3.5.5 Hydraulic Pump Option H2 Parts List ......... 3-14
3.1DESCRIPTION
3.1.1General. There are six models available for use.
Three models are pneumatically operated and three are
hydraulically operated. The pneumatic models may be
single or double acting. An internal spring will return the
piston to the reload position in single-acting pumps. All
hydraulic models are double-acting.
3.1.1.1 All models are designed to mount directly to either
the pump-to-reservoir manifold or the pump-to-wall manifold. When the pump is properly mounted on a manifold, the
manifold will have all the porting for air and lubricant
connections to and from the pump.
3.1.1.2 Operating sequences for single-acting and doubleacting pumps are listed below. Figure 3-1 shows a sectional view of a typical pump and will help in understanding
pump operation.
a.With single-acting models, air under pressure is
supplied through the inlet port (SA) to chamber (C). This
moves the air and lube pistons to the right. This closes
the lube inlet port and forces the lubricant already in
chamber (B) past the check valve and into the system.
Air in chamber (A) must vent out port (DA). A plastic pipe
plug with a vent hole is installed in port (DA). After a
preset time interval the solenoid valve shuts off the air
supply and vents chamber (C) through port (SA). The
spring returns the air and lube pistons, opening
chamber (B) to the lube reservoir.This completes a
single pump cycle and chamber (B) is primed, ready for
the next cycle.
b.The double-acting models have an additional air or
hydraulic supply line connected to port (DA). When the
pistons have been moved to the right, air or hydraulic
supply to port (SA) is shut off and vented. Then, air or
hydraulic fluid under pressure is supplied to port (DA),
which returns the pistons to their original position. This
more powerful return action allows an increased cycle
rate of the pump.
3.1.1.3 All pneumatic pumps have a lube-to-air pressure
ratio of 30:1. The pumps operate on input pressure ranging
from 40 to 150 psi (3 to 10 bar). The HLJ-5M and HLJ-25M
hydraulic pumps have a lube-to-hydraulic ratio of 5.5:1. The
HLJ-5X has a lube-to-hydraulic ratio of 2.2:1. The hydraulic
pumps operate on input pressures ranging from 200 to
2000 psi (14 to 138 bar). It should be noted that lower input
pressures may prevent the pumps from building sufficient
pressure to crack a rupture disc or activate a high-pressure
device. In pneumatic systems, with an inlet air pressure of
40 psi (3 bar), only 1200 psi (83 bar) could be developed. In
hydraulic systems, with 200 psi (14 bar) only 1100 psi
(76 bar) could be developed. Neither of these pressures
would be high enough to crack a 1450 psi disc. The system
could be blocked and not functioning without giving any
indication to plant personnel. The supply pressure, either
penumatic or hydraulic, should be adjusted high enough to
ensure that a blocked line will cause sufficient pressure to
be developed.
3-1
Modu-Flo® System42000
3.1.1.4 In pneumatically-operated systems, pressure
surges often occur when the solenoid is energized. These
surges can be minimized by installing air flow devices in the
solenoid pneumatic lines.
3.1.1.5 Table 3-1 lists the available pumps along with other
data. Note that the part number on the pneumatic pump is
the same for two different pump models. This is because
any pneumatic pump may be used as either single- or
SINGLE ACTING
(S.A.) PORT
CHAMBER (A)
CHAMBER (C)
double-acting. Listings in the option column are used to
identify the pump selected when a Modu-Flo system is
ordered. The option used is designated by the entry in the
ordering code as shown below:
MPP - XXX - XXX - XX - XX - XX - XX - XX - XXX - XX
Pump Option
LUBE INLET
PORT
LUBE OUTLET
PORT
CHECK
VALVE
CHAMBER (B)
RETURN
SPRING
AIR PISTON
LUBE PISTON
DOUBLE ACTING
(D.A.) PORT
Figure 3-1. Typical Pump Operation
Table 3-1. Pumps
Input
Volume
OutputMaximumPer Full
PartDisplacement RangeStrokes/Stroke/Cycle
NumberModelActioncu in (cm
A. Pneumatic Pumps
521-000-001AL-5Single0.010 to 0.030 (0.164 to 0.492) 651.06 (17.4)A1
Double1002.09 (34.3)
521-000-021AL-25Single0.030 to 0.120 (0.492 to 1.966) 254.20 (68.8)A3
Double1008.28 (135.7)
521-000-041AL-50Single0.060 to 0.240 (0.983 to 3.933) 208.40 (137.6)A5
Double 6016.56 (271.4)
3
) per strokeMinutecu.in. (cm3)Option
B. Hydraulic Pumps
521-000-011HLJ-5Double0.010 to 0.030 (0.164 to 0.492)1 0 00.35 (5.7)H1
521-000-031HLJ-25Double0.030 to 0.120 (0.492 to 1.966) 501.38 (22.6)H2
521-005-900HLJ-5XDouble0.030 to 0.092 (0.492 to 1.51)1 0 01.28 (21.0)H 3
R
3-2
42000Modu-Flo® System
R
3.2PREPARATION FOR USE
3.2.1Mounting. Any pump mounts directly to any manifold
with four socket-head capscrews. Care must be taken to
ensure that the outlet of the manifold is lined up with the inlet
on the pump. The face of the pump which mates with the
manifold has several o-rings. When the pump is being
installed, care must be taken to ensure these o-rings are not
moved out of position. The o-rings provide a seal for the
movement of air and lubricant between the manifold and
pump. If an o-ring is missing, air or lubricant may leak. After
being secured to the manifold, no further connections can be
made to the pump.
3.2.2Output Adjustment. Adjustment of the pump output
may be made with the pump removed from or still attached
to the manifold.
3.2.2.1 The procedure for output adjustment is listed below.
The items referenced are found in Figure 3-2. The adjustment procedure is the same for both pneumatic and hydraulic pumps.
a.Remove adjustment cap (22) from adjustment screw
(13), holding jam nut (21) if necessary.
b.Butt adjustment cap (22) against jam nut (21) and use
the stamped numbers on the cap to determine how
much adjustment is needed.
c.Loosen jam nut (21) and use a flat screwdriver to turn
adjustment screw (13). Turn adjustment screw in for
less output, turn out for more output.
d.Tighten jam nut (21) and install adjustment cap (22)
over the adjustment screw (13).
3.2.2.2 When adjusting pump output, one complete turn of
the adjusting screw will change the output by the following
amounts:
a.0.0018 cubic inch for pump options A1 and A2.
b.0.006 cubic inch for pump options A3 and A4.
c.0.009 cubic inch for pump options A5 and A6.
d.0.0018 cubic inch for pump option H1.
e.0.006 cubic inch for pump option H2 and H3.
3.3PNEUMATIC PUMP MAINTENANCE
(OPTIONS A1 THROUGH A6)
3.3.1General. Maintenance tips, disassembly and
assembly procedures for pneumatic pumps are discussed
in Paragraphs 3.3.2 through 3.3.4. An exploded view of a
typical pneumatic pump is shown in Figure 3-2 and should
be referred to during the discussion.
3.3.2Pneumatic Pump Maintenance Tips.
3.3.2.1 The only maintenance required on the pneumatic
pump is to check for the following:
a.Check four socket-head screws (11, Figure 3-2) to make
sure they are tight. Loose screws could allow air and/or
lubricant to leak between the pump and the manifold.
This condition could result in erratic pump output.
b.Check jam nut (21) to make sure it is tight against
adjustment screw body (19). If the jam nut is loose, the
adjustment screw (13) could rotate and cause the pump
output to change. This condition could also result in
lubricant leakage or in air being sucked into the lubricant.
3.3.2.2 If internal components of the pump are defective it
will usually result in erratic pump operation or output. Section
9 of this manual lists causes and solutions for problems
which could occur in the Modu-Flo system. Before disassembling any pump, refer to Section 10. The problem may
be caused by other conditions which can be checked first
before disassembling the pump.
3.3.3Disassembly of Pneumatic Pump. The procedure
below describes complete disassembly of a pump. However, you only need to disassemble to your specific area of
concern.
3.3.3.1 The disassembly procedure for the pneumatic
pump is as follows:
NOTE
Figure 3-2 shows air cylinder (7) separated from
pump body (10). To achieve disassembly to this
level requires special tools to remove air cylinder retainer (23). Normally, this level of disassembly is only performed at the factory. If scoring
or wear marks are evident on the inner diameter
of air cylinder (7) or pump body (10), the pump
assembly cannot be serviced and should be
replaced.
a.Separate pump from manifold by removing four socket-
head screws (11, Figure 3-2). Remove and discard three
o-rings (9) and one o-ring (18).
b.Remove enclosure screw (14). Remove and discard
gasket (15). Remove check valve spring (16), ball (32),
and check seat (29). Remove and discard o-ring (30)
from seat (29).
c.Remove adjustment screw body (19) and o-ring (12)
from pump body (10). Discard o-ring (12). Removal of
adjustment screw (13) from adjustment screw body (19)
will change output setting when pump is reassembled.
If adjustment screw (13) requires removal, perform the
following:
(1) Remove adjustment screw cap (22) from adjust-
ment screw (13). Butt the adjustment screw cap
(22) against jam nut (21) and use the stamped
numbers on the cap to measure how far the
adjustment screw (13) extends from the jam nut.
Record this dimension.
(2) Remove jam nut (21) and two gaskets (20). Discard
gaskets.
(3) Remove adjustment screw (13) by screwing it
towards the hex portion of the adjustment screw
body (19) until it is free.
d.Remove retainer ring (4).
3-3
Modu-Flo® System42000
e.Insert wooden dowel or soft rod into pump body (10) and
push lube piston (5) until cylinder cap (3) is out of air
cylinder (7). Remove and discard o-ring (2) from cylinder
cap (3).
f.Continue to push lube piston (5) through pump body
(10) until air piston (1) is exposed and can be removed
from air cylinder (7). Remove air piston (1), lube piston
(5), and piston-return spring (24) from air cylinder (7).
g.Remove retainer ring (25) and spring retainer (26) from
air piston (1).
h.Remove retainer ring (27) to separate lube piston (5)
from air piston (1). Remove and discard o-rings (6 and
28).
3.3.4Assembly of Pneumatic Pump.
3.3.4.1 Assemble the pneumatic pump according to the
following procedure:
NOTE
Use new o-rings, gaskets and return spring
when assembling pump. Lubricate all o-rings
and sliding parts with the lubricant which is
used in the system.
a.Install new o-ring (6) on lube piston (5).
b.Install new o-ring (28) on air piston (1). Install lube
piston (5) into air piston (1) and secure with retainer ring
(27).
c.Install spring retainer (26) in air piston (1) and secure
with retainer ring (25).
d.Install piston-return spring (24) in air cylinder (7). Push
air piston (1) through air cylinder (7) and into pump body
(10).
e.Install new o-ring (2) on cylinder cap (3) and secure in
air cylinder (7) with retainer ring (4).
f.Insert smaller end of adjustment screw (13) into
adjustment screw body (19). Rotate adjustment screw
(13) until smaller end is protruding from hex portion of
adjustment screw body (19).
g.Install new o-ring (12) on adjustment screw body (19)
and install adjustment screw body in pump body (10).
Tighten securely.
h.Install jam nut (21) and two new gaskets (20), one on
each side of jam nut, on adjustment screw (13). Butt
adjustment screw cap (22) against jam nut (21) and turn
adjustment screw (13) until the length it extends beyond
the jam nut is the same as the length recorded during
disassembly.
i.Install adjustment screw cap (22) on adjustment screw
(13).
j.Install new o-ring (30) on check seat (29) and install
seat into pump body.
kInstall steel ball (32) and check valve spring (16) into
pump body (10). Place new gasket (15) on enclosure
screw (14). Install enclosure screw (14) into pump body
(10) and tighten securely.
lInstall three new o-rings (9) and one new o-ring (18) into
pump body (10). Securely attach to manifold with four
socket-head screws (11).
3.3.4.2 When the assembly steps listed above have been
completed, adjust the pump output as described in Paragraph 3.2.2.
3.3.5Pneumatic Pump Parts List. Table 3-2 identifies
the parts indexed in Figure 3-2.
2422-010-290+ O-RING, Part of kit 560-001-021 (AL5)1
3521-000-100CAP, Cylinder (AL5)1
4418-050-310+ RING, Retainer, part of kit 560-001-021 (AL5)1
5PISTON, Lube1
*
6527-000-790+ O-RING, Part of kit 560-001-021 (AL5)1
7521-000-080CYLINDER, Air (AL5)1
8422-010-200+ O-RING, Part of kits 560-001-021, 560-001-031 and 560-001-0411
9423-700-113+O-RING, Part of kits 560-001-021, 560-001-031 and 560-001-0415
10BODY, Pump1
*
11419-130-070+SCREW, Socket-head, 1/4-20 x 1-1/4 inch4
12422-011-140+O-RING, Part of kits 560-001-021, 560-001-031 and 560-001-0411
13521-003-000SCREW , Adjustment (AL5)1
14521-008-460SCREW, Enclosure1
15500-132-000+GASKET, Part of kits 560-001-021, 560-001-031 and 560-001-0411
16511-893-000+SPRING, Check valve, part of kits1
17401-030-030+BALL, Steel, 3/16 inch diameter, part of kits1
18423-700-114+O-RING, Part of kit 560-001-021, 560-001-031, 560-001-0411
19521-003-030BODY, Adjustment screw (AL5)1
20439-040-050+GASKET, Part of kit 560-001-021 (AL5)2
21410-702-028+NUT, Jam, hexagon, 5/16-24 (AL5)1
22521-002-970CAP, Adjustment screw (AL5)1
23521-000-150RETAINER, Air cylinder1
24521-000-070+SPRING, Piston return, part of kit 560-001-021 (AL5)1
25418-050-110+RING, Retainer, part of kit 560-001-021 (AL5)1
26521-000-520RETAINER, Spring (AL5)1
521-000-041PUMP ASSEMBLY (AL50)-521-000-220PISTON, Air (AL25)1
521-000-400PISTON, Air (AL50)1
422-010-350+ O-RING, Part of kit 560-001-031 (AL25)1
422-010-380+ O-RING, Part of kit 560-001-041 (AL50)1
521-000-210CAP, Cylinder (AL25)1
521-000-390CAP, Cylinder (AL50)1
418-050-450+ RING, Retainer, part of kit 560-001-031 (AL25)1
418-050-520+ RING, Retainer, part of kit 560-001-041 (AL50)1
423-700-111+O-RING, Part of kit 560-001-031 (AL25)1
423-700-112+ O-RING, Part of kit 560-001-041 (AL50)1
521-000-200CYLINDER, Air (AL25)1
521-000-450CYLINDER, Air (AL50)1
--521-001-391PUMP ADJUSTMENT ASSEMBLY (consists of Items 13 and 19 thru 22) (AL5)1
--521-001-401PUMP ADJUSTMENT ASSEMBLY (consists of Items 13 and 19 thru 22) (AL25)1
--521-001-411PUMP ADJUSTMENT ASSEMBLY (consists of Items 13 and 19 thru 22) (AL50)1
+ Included in Repair Kit. Refer to Repair Kits above.
R
3-6
42000Modu-Flo® System
R
+
4
3
2
+
1
5*
6+
22
25
20+
+
**
26
21+
27+
20
28
+
23
19
+
14
35+
15+
16+
TEST/AIR
***
PURGE PORT
34+
6
‘
6
17+
30+
9+
29+
12+
24+
10*
11+
18+
33
15+
36+
16+
7
8+
9+
17+
13**
CHECK V ALVE COMPONENTS
*Not Available as Replacement Parts.
+Included in Repair Kit. Refer to Page 3-6.
** Included in Pump Adjustment Assembly. Refer to Page 3-6.
SEE NOTE ON PAGE 4.2
***
Figure 3-2. Pneumatic Pump, Exploded View
3-7/(3-8 Blank)
PREVIOUS TO L93
(December 1993)
42000Modu-Flo® System
R
3.4HYDRAULIC PUMP MAINTENANCE
(OPTIONS H1 and H3)
3.4.1General. Maintenance tips, disassembly and
assembly procedures for Options H1 and H3 hydraulic pump
are discussed in Paragraphs 3.4.2 through 3.4.4. An
exploded view of the pump is shown in Figure 3-3 and
should be referred to during the discussion.
3.4.2Hydraulic Pump Options H1 and H3 Maintenance
Tips.
3.4.2.1 The only maintenance required on the hydraulic
pump Options H1 and H3 is to check for the following:
a.Check four socket-head screws (8, Figure 3-3) to make
sure they are tight. Loose screws could allow hydraulic
fluid and/or lubricant to leak between the pump and the
manifold. This condition could result in erratic pump
output.
b.Check for leakage past gasket (12). Replace gasket if
required.
c.Check jam nut (19) to make sure that it is tight against
adjustment screw body (17). If the jam nut is loose, the
adjustment screw (10) could rotate and cause the pump
output to change. This condition could also result in
lubricant leakage or in air being sucked into the lubricant.
3.4.2.2 If internal components of the pump are defective it
will usually result in erratic pump operation or output. Section
10 of this manual lists causes and solutions for problems
which could occur in the Modu-Flo system. Before disassembling any pump, refer to Section 10. The problem may
be caused by other conditions which can be checked first
before disassembling the pump.
3.4.3Disassembly of Hydraulic Pump Options H1 and
H3. The procedure below describes complete disassembly
of a pump. However, you only need to disassemble to your
specific area of concern.
3.4.3.1 The disassembly procedure for the hydraulic pump
Options H1 and H3 is as follows:
a.Separate pump from manifold by removing four socket-
head screws (8). Remove and discard three o-rings (15)
and one o-ring (16).
b.Remove enclosure screw (11). Remove and discard
gasket (12), check valve spring (13), steel ball (24),
check seat (22), and o-ring (23).
c.Remove adjustment screw body (17) and o-ring (9) from
body (7). Discard o-ring (9). Removal of adjustment
screw (10) from adjustment screw body (17) will change
output setting when pump is reassembled. If adjustment screw (10) requires removal, perform the following:
(1) Remove adjustment screw cap (20) from adjust-
ment screw (10). Butt the adjustment screw cap
(20) against jam nut (19) and use the stamped
numbers on the cap to measure how far the
adjustment screw (10) extends from the jam nut.
Record this dimension.
(2) Remove jam nut (19) and two gaskets (18). Discard
gaskets (18).
(3) Remove adjustment screw (10) by screwing it
towards the hex portion of the adjustment screw
body (17) until it is free.
d.Remove cylinder cap (6) from body (7). Remove and
discard o-ring (5).
e.Removal of the piston and its associated components is
different for each option. Perform the appropriate
following steps:
(1) For Option H1, use a wood dowel or a soft rod to
push hydraulic piston (2) and lube piston (1) from
pump body (7). Remove and discard o-rings (4) and
(21). Inspect piston (2) and pump body (7) inner
diameter for scoring or wear marks. If damage is
present the pump assembly cannot be serviced and
should be replaced.
(2) For Option H3, use a wood dowel or a soft rod to
push the piston (27) from the pump body (7).
Remove and discard o-rings (26 and 29) and
backup rings (25 and 28). Inspect piston (27) and
pump body (7) inner diameter for scoring or wear
marks. If damage is present, the pump assembly
cannot be serviced and should be replaced.
f.For the H1 option only, separate hydraulic piston (2) and
lube piston (1) by removing groove pin (3).
3.4.4Assembly of Hydraulic Pump Options H1 and H3.
NOTE
Use new o-rings and gaskets when assembling
pump. Lubricate all o-rings and sliding parts
with the lubricant which is used in the system.
3.4.4.1 Assemble the hydraulic pump Options H1 and H3
according to the following procedure:
a.For the H1 option only, insert lube piston (1) into hydrau-
lic piston (2). Install groove pin (3) to secure the assembly.
b.Assembly of the piston and its associated components
is different for each option. Perform the appropriate
following steps:
(1) For Option H1, install new o-ring (4) on hydraulic
piston (2). Install new o-ring (21) on lube piston (1).
Insert pistons into body (7).
(2) For Option H3, install new o-ring (26) and backup
rings (25) on cylinder cap end of piston (27). Install
new o-ring (29) and backup rings (28) on the other
end of the piston (27).
c.Install new o-ring (5) on cylinder cap (6). Screw cylinder
cap (6) into body (7) and securely tighten it.
d.Insert smaller end of adjustment screw (10) into
adjustment screw body (17). Rotate adjustment screw
(10) until smaller end is protruding from hex portion of
adjustment screw body (17).
e.Install new o-ring (9) on adjustment screw body (17) and
install adjustment screw body in body (7). Tighten
securely.
3-9
Modu-Flo® System42000
f.Install jam nut (19) and two new gaskets (18), one on
each side of jam nut, on adjustment screw (10). Butt
adjustment screw cap (20) against jam nut (19) and
turn adjustment screw (10) until the length it extends
beyond the jam nut is the same as the length recorded
during disassembly.
g.Install adjustment screw cap (20) on adjustment screw
(10).
h.Install new o-ring (23) on check seat (22) and install
seat assembly into pump body.
i.Install steel ball (24) and check valve spring (13) into
body (7). Place new gasket (12) on enclosure screw
(11). Screw enclosure screw into body (7) and tighten
securely.
j.Install three new o-rings (15) and one o-ring (16) into
body (7). Securely attach pump assembly to manifold
with four socket-head screws (8).
3.4.4.2 When the assembly steps listed above have been
completed, adjust the pump output as described in Paragraph 3.2.2.
3.4.5Hydraulic Pump Options H1 and H3 Parts List.
Table 3-3 identifies the parts indexed in Figure 3-3.
T able 3-3. Hydraulic Pump Options H1 and H3 Part s List
Item
NumberPart NumberDescriptionQuantity
521-000-011PUMP ASSEMBL Y, HLJ-5 (Option H1)-521-005-900PUMP ASSEMBL Y, HLJ-5X (Option H3)--
1PISTON, Lube (HLJ-5)1
*
2521-000-190PISTON, Hydraulic (HLJ-5)1
3411-101-630+PIN, Groove, part of kit 560-001-051 (HLJ-5)1
4422-021-110+O-RING, Part of kit 560-001-051 (HLJ-5)1
5422-011-160+O-RING, Part of kit 560-001-051 (HLJ-5)1
422-021-160+ O-RING, Part of kit 560-001-940 (HLJ-5X)1
6521-000-180CAP, Cylinder1
7BODY, Pump, HLJ-51
*
8419-130-070SCREW, Socket-head, 1/4-20 x 1-1/4 inch, part of repair kit 560-001-0514
9422-011-140+O-RING, Part of kit 560-001-051 (HLJ-5)1
422-021-140+ O-RING, Part of kit 560-001-940 (HLJ-5X)1
10521-003-000SCREW, Adjustment1
11521-008-460SCREW, Enclosure1
12500-132-000+ GASKET, Part of kits 560-001-051 and 560-001-9401
13511-893-000+ SPRING, Check valve, part of kits 560-001-051 and 560-001-9401
14401-030-030+ BALL, Steel, 3/16 inch, part of kits 560-001-051 and 560-001-9401
15423-700-113+ O-RING, Part of kits 560-001-051 and 560-001-9403
16423-700-114+ O-RING, Part of kits 560-001-051 and 560-001-9401
17521-003-030BODY, Adjustment screw (HLJ-5)1
521-005-710BODY, Adjustment screw (HLJ-5X)1
18439-040-050+ GASKET, Stat-O-Seal, part of kit 560-001-051 (HLJ-5)2
439-050-050+ GASKET, Stat-O-Seal, part of kit 560-001-940 (HLJ-5X)2
19410-702-028NUT, Jam, Part of Kit 560-001-0511
20521-002-970CAP, Adjustment screw (HLJ-5)1
521-010-360CAP, Adjustment screw (HLJ-5X)1
21527-000-790+ O-RING, Part of kit 560-001-051 (HLJ-5)1
22521-008-450+ SEAT, Check valve, part of kits 560-001-051 and 560-001-9401
23422-010-080+ O-RING, Part of kits 560-001-051 and 560-001-9401
25423-700-057+ RING, Backup, part of kit 560-001-940 (HLJ-5X)2
26423-700-060+ O-RING, Part of kit 560-001-940 (HLJ-5X)1
27PISTON (HLJ-5X)1
*
28423-700-058+ RING, Backup, part of kit 560-001-940 (HLJ-5X)2
29423-700-059+ O-RING, Part of kit 560-001-940 (HLJ-5X)1
30521-000-050SCREW, Enclosure1
31401-010-010BALL, Steel 1/8” Dia., Part of Kit 560-001-0511
32417-450-020SCREW, Set 10-32”x1/4”1
--560-001-051REPAIR KIT (consists of Items 3, 4, 5, 8, 9, 12 thru 16, 18, and 21 thru 23) 1
assembly procedures for hydraulic pump Option H2 are
discussed in Paragraphs 3.5.2 through 3.5.4. An exploded
view of the pump is shown Figure 3-4 and should be
referred to during the discussion.
3.5.2Hydraulic Pump Option H2 Maintenance Tips.
3.5.2.1 The only maintenance required on the hydraulic
pump Option H2 is to check for the following:
a.Check four socket-head screws (11, Figure 3-4) to
make sure they are tight. Loose screws could allow air
and/or lubricant to leak between the pump and the
manifold. This condition could result in erratic pump
output.
b.Check for leakage past gasket (15). Replace gasket if
required.
c.Check jam nut (21) to make sure it is tight against
adjustment screw body (19). If the jam nut is loose, the
adjustment screw (13) could rotate and cause the
pump output to change. This condition could also
result in lubricant leakage or in air being sucked into
the lubricant.
3.5.2.2 If internal components of the pump are defective it
will usually result in erratic pump operation or output.
Section 9 of the manual lists causes and solutions for
problems which could occur in the Modu-Flo system. Before
disassembling any pump, refer to Section 9. The problem
may be caused by other conditions which can be checked
first before breaking down the pump.
3.5.3Disassembly of Hydraulic Pump Option H2. The
procedure below describes complete disassembly of a
pump. However, you only need to disassemble to your
specific area of concern.
3.5.3.1 The disassembly procedure for the hydraulic pump
Option H2 is as follows:
NOTE
Figure 3-4 shows hydraulic cylinder (7) separated from body (10). To achieve disassembly
to this level requires special tools to remove
hydraulic cylinder retainer (23). Normally, this
level of disassembly is only performed at the
factory. If scoring or wear marks are evident on
the inner diameter of hydraulic cylinder (7) or
body (10), the pump cannot be serviced and
should be replaced.
a.Separate pump from manifold by removing four socket-
head screws (11). Remove and discard three o-rings
(9) and one o-ring (18).
b.Remove enclosure screw (14). Remove and discard
gasket (15), check valve spring (16), steel ball (29),
check seat (25), and o-ring (26).
c.Remove adjustment screw body (19) and o-ring (12)
from body (10). Discard o-ring (12). Removal of
adjustment screw (13) from adjustment screw body
(19) will change output setting when pump is reas-
sembled. If adjustment screw (13) requires removal,
perform the following:
(1) Remove adjustment screw cap (22) from adjust-
ment screw (13). Butt the adjustment screw cap
(21) against jam nut (22) and use the stamped
numbers on the cap to measure how far the
adjustment screw (13) extends from the jam nut.
Record this dimension.
(2) Remove jam nut (21) and two gaskets (20).
Discard gaskets.
(3) Remove adjustment screw (13) by screwing it
towards the hex portion of the adjustment screw
body (19) until it is free.
d.Remove cylinder cap (6). Remove and discard o-ring
(5).
e.Use wooden dowel or soft rod to push hydraulic piston
(2) and lube piston (1) from hydraulic cylinder (7).
Remove and discard o-rings (4 and 9) and backup
rings (24).
f.Separate hydraulic piston (2) from lube piston (1) by
removing groove pin (3).
3.5.4Assembly of Hydraulic Pump Option H2.
NOTE
Use new o-rings and gaskets when assembling pump. Lubricate all o-rings and sliding
parts with the lubricant which is used in the
system.
3.5.4.1 Assemble the hydraulic pump Option H2 according
to the following procedure:
a.Insert lube piston (1) into hydraulic piston (2). Insert
groove pin (3) to secure the assembly.
b.Install new o-ring (4) and backup rings (24) on hydraulic
piston (2). Install new o-ring (9) on lube piston (1). Push
piston assembly through hydraulic cylinder (7) into body
(10).
c.Install new o-ring (5) on cylinder cap (6). Screw cylinder
cap into hydraulic cylinder (7) and tighten securely.
d.Insert smaller end of adjustment screw (13) into
adjustment screw body (19). Rotate adjustment screw
(13) until smaller end is protruding from hex portion of
adjustment screw body (19).
e.Install new o-ring (12) on adjustment screw body (19)
and install adjustment screw body in body (10). Tighten
securely.
f.Install jam nut (21) and two new gaskets (20), one on
each side of jam nut, on adjustment screw (13). Butt
adjustment screw cap (22) against jam nut (21) and
turn adjustment screw (13) until the length it extends
beyond the jam nut is the same as the length recorded
during disassembly.
g.Install adjustment screw cap (22) on adjustment screw
(13).
h.Install new o-ring (26) on check seat (25) and install
check seat assembly into pump body. Install new ball
(29) and new check valve spring (16) into body (10).
3-13
Modu-Flo® System42000
Place new gasket (15) on enclosure screw (14). Screw
enclosure screw (14) into body (10) and tighten securely.
i.Install three new o-rings (9) and one new o-ring (18) into
body (10). Securely attach pump to manifold using four
socket-head screws (11).
3.5.4.2 When the assembly steps listed above have been
completed, adjust the pump output as described in Paragraph 3.2.2.
3.5.5Hydraulic Pump Option H2 Parts List. Table 3-4
identifies the parts indexed in Figure 3-4.
T able 3-4. Hydraulic Pump Option H2 Part s List
Item
NumberPart NumberDescriptionQuantity
521-000-031PUMP ASSEMBL Y, HL-25 (Option H2)--
1PISTON, Lube1
*
2521-000-310PISTON, Hydraulic1
3411-101-660+PIN, Groove, part of kit 521-001-0611
4422-021-160+O-RING, Part of kit 521-001-0611
5422-011-220+O-RING, Part of kit 521-001-0611
6521-000-300C A P, Cylinder1
7521-000-290CYLINDER, Hydraulic1
8422-010-200+O-RING, Part of kit 521-001-0611
9423-700-11 1+O-RING, Part of kit 521-001-0611
10BODY, Pump1
*
11419-130-070+SCREW, Socket-head, 1/4-20 x 1-1/4 inch4
12422-011-140+O-RING, Part of kit 521-001-0611
13521-003-010SCREW, Adjustment1
14521-008-460SCREW, Enclosure1
15500-132-000+GASKET, Part of kit 521-001-0611
16511-893-000+SPRING, Check valve, part of kit 521-001-0611
17401-030-030+BALL, Steel, 3/16 inch, part of kit 521-001-0611
18423-700-114+O-RING, Part of kit 560-001-0611
19521-003-040BODY, Adjustment screw1
20439-040-070+GASKET, Stat-O-Seal, part of kit 521-001-0612
21410-702-033+NUT, Jam, 7/16-201
22521-002-980CAP, Adjustment screw1
23521-000-330RETAINER1
24423-700-063+RING, Backup, part of kit 560-001-0611
25521-008-450+SEAT, Check valve, part of kit 560-001-0611
26422-010-080+O-RING, Part of kit 560-001-0611
27423-700-113+O-RING, Part of kit 560-001-0615
30521-000-050SCREW, Enclosure1
31401-010-010+BALL, Steel 1/8” Dia.1
32417-450-020+SCREW, Set 10-32”x1/4”1
33411-700-763+ROLL PIN1
--560-001-061REP AIR KIT (consists of Items 3, 4, 5, 8, 9, 11,12, 15 thru 18,1
20, 21, 24 thru 27 and 31 thru 33)
available. Either manifold is designed to have any of the
pneumatic or hydraulic pumps mount directly to it. The
pump-to-reservoir manifold attaches directly to the base of
the lubricant reservoir or tank. The pump-to-wall manifold is
used to mount the lubricant pump in a remote location,
separate from the lubricant reservoir or tank.
4.1.1.1 The manifolds contain the pneumatic (or hydraulic)
porting and lubricant lines necessary to operate the pump
and to direct the lubricant flow. A shutoff is built into the
manifold to prevent lubricant from leaking from the reservoir
or tank when the pump is removed.
Modu–Flo®
System
socket-head screws. Pump-to-wall manifolds require that
the surface that the manifold will be attached to has two 3/816 tapped holes 2-1/4 inches apart. The manifold must be
mounted so that when the pump is mounted the enclosure
screw on the pump will be on top. This will ensure proper
bleeding and priming of the system.
4.2.2Connection to Other Components. Four 1/4-20
tapped holes are provided on the manifold for pump
attachment. The holes are laid out in a way that prevents the
pump from being mounted incorrectly. The operating ports,
listed in Table 4-1, must be connected by hose or tubing to
their appropriate locations.
4.3MAINTENANCE
4.1.1.2 Table 4-1 lists the operating ports used on the
manifolds. Each port is identified by stamped lettering.
Table 4-2 lists the part numbers of the manifolds accessories. Manifolds and accessories can be ordered separately
or as a combination package. Figure 4-1 shows a typical
manifold with various accessories connected to the lube
ports.
4.2PREPARATION FOR USE
4.2.1Mounting. Pump-to-reservoir manifolds mount
directly to the base of the reservoir or tank with two 3/8-16
4.3.1There is little maintenance required on the manifold assemblies. All fittings and accessories used on the
unit should be tightened to avoid leakage. If any accessory
shows evidence of failure it may be removed by simply
unscrewing it from the manifold. Refer to disassembly
procedures in Section 2 for draining techniques. The pump
does not need to be removed from the manifold but it may
be desired if space is limited.
NOTE
Ensure all lubricant is drained from reservoir
before removing manifold.
4-1
Modu-Flo® System42000
T able 4-1. Operating Port s on Modu-Flo Manifolds
Port NameFunction
DASingle-acting model pumps:
(DoublePort is fitted with a plastic vent orifice plug so
Acting)
GAUGEPort for attaching a pressure gauge to indicate
INDPort for attaching a blowout or pressure
SYS FILLPort for attaching an inlet check valve. This
LUBE OUTPort that the system being lubricated is
SAPort has a pneumatic or hydraulic supply
(Singlesource connected to it. Fluid directed to this
Acting)port causes the pump to dispense.
TESTPort is used for bleeding air out of pump. Back
**
LUBE INPort that the lubricant reservoir or tank outlet
Pump-to-is connected to.
Wall (Remote) Manifold Only
On newer units, the test port has been relocated to the
**
adjustment end of the pump body. The use and function
of this port is the same in either location.
that air can be exhausted on piston return
stroke.
Double acting model pumps:
Port has air or hydraulic supply connected to it.
Fluid directed to this port causes the pump to
retract to the loading position.
pump output pressure. This port is common to
the LUBE OUT port.
indicating assembly. This port is common to
the LUBE OUT port.
allows the lubrication lines to be filled by an
outside source of lubricant so that the pump
does not cycle excessively when filling the
system.
connected to. An outlet check valve is installed
here.
out setscrew one or two turns while pump is in
the dispense stroke. Close setscrew when
pump is on return stroke to prevent air from
being sucked in. Repeat process until air-free
lubricant comes from vent hole.
T able 4-2. Manifolds and Manifold Accessories
ItemPart Number
Pump-to-Reservoir Manifold Only521-001-540
Pump-to-Reservoir Manifold Assembly:521-001-180
Includes outlet check valve, System
fill check valve,blowout assembly,
and pressure gauge
Includes outlet check valve, system fill
check valve, tubed blowout assembly,
and pressure gauge
Pump-to-Wall (Remote) Manifold
Combination:521-001-780
Includes outlet check valve, system fill
check valve, and blowout assembly
for high pressure alarm.
Outlet Check Valve509-360-030
System Fill Check Valve509-365-030
Elbow, 1/4 inch pipe509-113-000
Pipe Plug, 1/4 inch508-975-000
Plastic Vent Plug, 1/4 inch521-001-160
(Located in D.A. Port) (Yellow)
Standard Blowout Assembly (1450 psi)509-206-100
Tubed Blowout Assembly (1450 psi)509-220-101
Bag of 6 Discs (1450 psi)560-900-270
*
Standard Pressure Gauge (0-3,000 psi)543-362-000
Liquid-filled Pressure Gauge (0-3,000 psi)543-711-380
Manifold to Reservoir
O-Ring (Buna-N)422-010-210
(Included with pump to reservoir manifold assemblies)
* Refer to Section 6 for kits in other pressure ranges.
Above items are for manifolds with 1/4” NPSF ports.
Consult factory for manifolds and accessories with SAE,
BSPP, and metric threads.
R
4-2
R
PLUNGER
P/N 422-010-210
SINGLE ACTING
(S.A.) PORT
O-RING
LUBE
SYSTEM
OUTLET
42000Modu-Flo® System
LUBE SYSTEM
FILL
CHECK V AL VE
*
DOUBLE ACTING
(D.A.) PORT
YELLOW VENT PLUG
* This port is used to manually fill system lube lines.
This is not the reservoir fill port. See figure 2-1 on
page 2-5, item 15 for location of grease reservoir fill.
On newer units, the test port has been
**
relocated to the adjustment end of the pump
body . The use and function of this port is the
same in either location.
Parts List .......................................................5-6
5.1DESCRIPTION
5.1.1General. Several varieties of assemblies are
available to provide a signal when the lubricant level is low.
Low-level switch assemblies used on oil tanks or reservoirs
depend on floats that fall with the depletion of lubricant and
actuate contacts on the switch. Switch assemblies used on
grease reservoirs are actuated when a cable attached to the
grease follower is pulled away from the switch as the
follower reaches the low position. Switch assemblies used
in oil reservoirs and grease reservoirs are rated 15 amps.
Optional 10-watt assemblies are available for oil tanks and
reservoirs.
5.1.1.1 The low-level assemblies with a 15 amp rating are
often used to activate a warning device such as a light or
alarm. The optional 10-watt assemblies are used to provide
input to controllers which may be programmed to use the
input signal as desired.
5.1.1.2 Table 5-1 lists the low-level assemblies available
for use. Listings in the option column are used to identify the
assembly selected when a Modu-Flo system is ordered.
The option used is designated by the entry in the ordering
code as shown below.
MPP - XXX - XXX - XX - XX -
XX - XX - XX - XXX - XX
Low-Level Option
5.2.MOUNTING INSTRUCTIONS
5.2.1Oil Reservoirs and Tanks. To install any low-level
switch in a reservoir or tank requires the removal of the tank
cover or reservoir cap. All covers or caps are equipped with
a 1/4 inch NPT tapped hole. The low-level switch has an
adapter which threads into the hole. For complete instructions on mounting these units, refer to Paragraphs 5.3.4
and 5.4.4.
5.2.2Grease Cylinders. The low-level switch for grease
cylinders consists of the switch itself mounted to a bracket
which is, in turn, attached to the top of the grease cylinder.
For complete instructions on mounting these units refer to
Paragraph 5.5.4.
5-1
Modu-Flo® System
42000
Table 5-1. Low-Level Switch Assemblies
Part NumberSwitch TypeSwitch Rating ACUsed OnOption
521-001-030Single-pole, double-throw15 amps at 115, 2305- and 12-pint oilL1
or 480 VACcylindrical reservoirs
521-001-040Single-pole, double-throw15 amps at 115, 23020-pint oil cylindricalL2
or 480 VACreservoir
521-001-050Single-pole, double-throw15 amps at 115, 2306-pint oil cylindricalL 3
or 480 VACreservoir and all tanks
456-010-171Single-pole, single-throw10 watts at 115 VAC6-pint oil cylindricalL7
reservoir and oil tanks
456-010-172Single-pole, single-throw10 watts at 115 VAC5- and 12-pint oilL 5
or 480 VAC, 0.5 amp
at 115 VDC, 0.25 amp
at 230 VDC
5.3OIL TANK AND RESERVOIR 15 AMP
LOW-LEVEL ASSEMBLY MAINTENANCE (OPTIONS L1, L2 and L3)
5.3.1General. Maintenance tips, disassembly and
assembly procedures for low-level options L1, L2 and L3 are
discussed in Paragraphs 5.3.2, 5.3.3 and 5.3.4. A typical lowlevel assembly is shown in Figure 5-1 and should be
referred to during this discussion.
5.3.2Oil T anks and Reservoir 15 Amp Low-Level
Assembly Maintenance Tips. No maintenance is required
on the low-level assemblies used on oil tanks and reservoirs. If the oil level runs down and the assembly fails to
perform as required, the unit may have to be disassembled
to replace a defective switch. Before attempting disassembly,
check all electrical connections to make sure they are secure
and check for any physical obstruction which might be
preventing the float from operating.
5.3.3Disassembly of Oil T ank and Reservoir 15 Amp
Low-Level Assemblies.
5.3.3.1 The disassembly procedure is as follows:
a.Turn off all electrical power and all air supplies to the
lube system.
b.Remove cover from reservoir (Refer to Section 2.).
c.Unscrew union nut (5, Figure 5-1) from switch adapter
(2).
d.Unscrew switch adapter (2) from switch (1).
e.Remove actuating rod, part of low-level lower assembly
(4), from remaining assembly.
f.Unscrew low-level lower assembly (4) from low-level
adapter (3).
g.Unscrew low-level adapter (3) from the reservoir cover.
Remove low-level adapter (3) from union nut (5).
5.3.4Assembly of Oil T ank and Reservoir 15 Amp LowLevel Assemblies.
5.3.4.1 The assembly procedure is as follows:
NOTE
The procedure listed below is based on
installing a new assembly in a tank or reservoir.
If your assembly was removed for repairs, steps
a and b do not apply.
WARNING
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
R
a.Remove cover from reservoir (Refer to Section 2.).
b.Remove 1/4 inch pipe plug from reservoir cover. Insert
low-level adapter (3, Figure 5-1) into union nut (5). Screw
low-level adapter (3) into the reservoir cover and tighten
securely.
5-2
42000Modu-Flo® System
R
c.Screw low-level lower assembly (4) into low-level
adapter (3) and tighten securely.
NOTE
If float portion of low-level lower assembly was
removed during disassembly, apply Locktite to
the attaching bolt and securely attach the float to
the arm.
d.Insert the actuating rod, part of low-level lower assembly
(4), into this assembly.
e.Screw switch adapter (2) into switch (1) and tighten
securely.
f.Screw union nut (5) onto switch adapter (2) and tighten
securely.
g.Install cover on reservoir (Refer to Section 2.).
h.Wire switch in accordance with local electrical codes.
5.3.5Oil T ank and Reservoir 15 Amp Low-Level Assemblies Parts List. Table 5-2 identifies the parts indexed in
Figure 5-1.
T able 5-2. Oil Tank and Reservoir 15 Amp Low-Level Assemblies Part s List
switch only , remove lock
nut from new switch
plunger housing before
assembling switch to
item (2) adapater .
* Not available as replacement parts.
LOCKTITE
USED AT
ASSEMBLY
1
5
4
2
COVER (REF)
3
5-3
Figure 5-1. Oil T ank and Reservoir 15 Amp Low-Level Assembly
Modu-Flo® System
42000
5.4OIL TANK RESERVOIR 10-WATT
LOW-LEVEL ASSEMBLY MAINTENANCE (OPTIONS L5, L6 AND L7)
5.4.1General. Maintenance tips, disassembly and
assembly procedures for low-level options L5, L6 and L7
are discussed in Paragraphs 5.4.2, 5.4.3 and 5.4.4. A
sectional view of a low-level assembly is shown in Figure 52 and should be referred to during the discussion.
5.4.2Oil Tank and Reservoir 10-W att Low-Level
Assembly Maintenance Tips. No maintenance is required
on the 10-watt low-level assemblies used on oil tanks and
reservoirs. If the oil level runs down and the assembly fails
to perform as required the unit may have to be disassembled to replace a defective switch. Before attempting
disassembly, check all electrical connections to make sure
they are secure and check for any physical obstructions
which might be preventing the float from operating.
5.4.3Disassembly of Oil T ank and Reservoir 10-W att
Low-Level Assemblies.
5.4.3.1 The disassembly procedure for oil tank and
reservoir 10-watt low-level assemblies is as follows:
WARNING
d.Unscrew nipple (2) from adapter (1). Be careful not to
twist the wires too much.
e.Unscrew nipple (2) from coupling (3).
f.Unscrew coupling (3) from switch (4).
g.Unscrew adapter (1) from the reservoir cover.
5.4.4Assembly of Oil Tank and Reservoir 10-W att LowLevel Assemblies.
5.4.4.1 The assembly procedure is as follows:
NOTE
The procedure listed below is based on
installing a new assembly in a tank or reservoir.
If your assembly was removed for repairs,
steps
a and b do not apply.
a.Remove the cover from the reservoir (Refer to Section
2.).
b.Remove the 1/4 inch pipe plug from the cover. Screw
adapter (1, Figure 5-2) in and tighten it securely.
c.Guide the two 22 AWG wires from switch (4) through
coupling (3). Screw coupling (3) onto switch (4) and
tighten securely.
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
a.Turn off all electrical power and air supplies to the lube
system.
b.Disconnect the two 22 AWG wires from the terminal
box. Disconnect adapter (1, Figure 5-2) from the
conduit.
c.Remove the cover from the tank or reservoir (Refer to
Section 2.).
d.Guide two 22 AWG wires through nipple (2). Screw
nipple into coupling (3).
e.Guide the two 22 AWG wires through adapter (1). Screw
nipple into adapter (1). Be careful not to twist the wires
too much. Tighten the connection.
f.Connect switch (4) in accordance with local electrical
codes.
5.4.5Oil Tank and Reservoir 10-Watt Low-Level
Assemblies Parts List. Table 5-3 identifies the parts
indexed in Figure 5-2.
R
5-4
R
T able 5-3. Oil Tank and Reservoir 10-Watt Low-Level Assemblies Part s List
assembly procedures for low-level assembly option L4 are
discussed in Paragraphs 5.5.2, 5.5.3 and 5.5.4. A sectional
view of a typical assembly is shown in Figure 5-3 and should
be referred to during the discussion.
5.5.2Grease Reservoir Low-Level Assembly Mainte-
nance Tips. No maintenance is required on the low-level
assemblies used on grease reservoirs. If the grease level
runs down and the assembly fails to perform as required,
the low level assembly may have to be disassembled to
replace a defective switch. Before attempting disassembly,
check all electrical connections to make sure they are secure
and check for any physical obstruction which might be
preventing the switch from operating.
5.5.3Disassembly of Grease Reservoir Low-Level
Assembly.
5.5.3.1 The disassembly procedure for the grease reservoir
low-level assembly is as follows:
WARNING
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
5-5
Modu-Flo® System
42000
a.Disconnect and lock out all electrical power and air
supplies to the lube system.
b.Disconnect switch (1, Figure 5-3) from terminal box.
Remove switch (1) from bracket (2).
c.Remove retainer ring (3) and spring (5).
d.Remove three self-tapping screws (4) and bracket (2).
5.5.4Assembly of Grease Reservoir Low-Level
Assembly .
5.5.4.1 The procedure for assembly of the grease reservoir
low-level assembly is as follows:
a.Attach bracket (2) to grease reservoir cover using three
self-tapping screws (4).
b.Place spring (5) over tip of level indicator.
c.Compress spring (5) and place retainer ring (3) be-
tween spring and tip of level indicator.
d.Attach switch (1) to bracket (2).
e.Wire switch (1) in accordance with local electrical codes.
5.5.5Grease Reservoir Low-Level Assembly Parts List.
Table 5-4 identifies the parts indexed in Figure 5-3.
T able 5-4. Grease Reservoir 15 Amp Low-Level Assembly Part s List
may be plumbed into the lubricant output circuit to provide
an electrical signal when excessive pressure is being
approached. The pressure switch is factory set at 1150 psig
(79 bar) and is used with a standard blowout disc rated at
1450 psig (100 bar). When output pressure reaches 1150
psig (79 bar), contacts on the switch will actuate and provide
a warning signal to an external device. If the problem
causing the high pressure is not corrected, the pressure will
continue to rise. When pressure reaches 1450 psig
(100 bar) the blowout disc will rupture and relieve the
pressure. The setting of the pressure switch is adjustable.
Adjustment procedures are discussed in Paragraph 6.2.2.
6.1.2Blowout Switches. High-pressure blowout switch
assemblies may be plumbed into the lubricant circuit to
provide an electrical signal when the blowout disc has
ruptured. On these assemblies, a tubed blowout assembly
is used. The tubed blowout allows lubricant to flow from the
ruptured blowout disc, through tubing up to an indicator
assembly. The indicator assembly has a built-in check valve
which will allow the lubricant to reach a pressure sufficient
enough to extend a plunger. The extended plunger actuates
a switch which will allow a signal to be sent to an alarm or
other device. Lubricant from the indicator is directed through
tubing and is returned to the inlet port on the reservoir or
tank. The indicator will retain the plunger in the extended
position even if lubricant pressure is reduced. The plunger
must be manually depressed to release the switch and
return the indicator to its normal position.
6.1.3Blowout Disc. The standard blowout disc, rated at
1450 psig (100 bar), may be used on any unit. This assembly does not provide any electrical signal when the blowout
pressure has been reached. The blowout disc will rupture at
the high pressure and the lubricant escaping from the
blown disc will provide a visual indication of failure. Discs
rated at higher pressures than 1450 psig (100 bar) are
available separately in kits of six. For identification purposes, discs are color coded. Table 6-1 lists the discs
available and the kit number for each.
T able 6-1. Blowout Discs and Kits
Kit No.
Rating(contains
Disc Part No.Colorpsi (bar)6 discs)
509-292-000Yellow1450 (100)560-900-270
6.1.3.1 When any pressure or blowout switch is actuated,
personnel must determine the cause for the rise in pressure. After the cause has been corrected, any blowout discs
6.2HIGH-PRESSURE SWITCH
ADJUSTMENT
which have been ruptured will need to be replaced with an
approved disc.
6.2.1General. The high-pressure switch assembly has
an adjustable range from 400 to 4700 psi (28 to 324 bar). If
6.1.4High-Pressure and Blowout Switch Options. T able
6-2 lists the pressure and blowout switch options available
for use. Listings in the option column are used to identify the
assembly selected when a Modu-Flo system is ordered. The
option used is designated by the entry in the ordering code
as shown below:
MPP - XXX - XXX - XX - XX - XX -
XX - XX - XXX - XX
the pressure setting is to be changed from the standard
factory setting of 1150 psi (79 bar) the blowout disc must
also be changed. To prevent system damage, the pressure
switch setting should not exceed 80 percent of the blowout
disc rating. Table 6-3 lists the blowout discs available and
the maximum pressure switch setting to be used.
Pressure Indicator Option
T able 6-2. High-Pressure and Blowout Switch Assemblies
Part NumberDescriptionElectrical RatingsUsed OnOption
521-001-220Pressure Switch Kit5 amp at 115/230 VACAny reservoirP1
521-001-190Blowout Assembly15 amp at 115,230 or 480 VAC5-pint or 5-poundP2
0.5 amp at 115 VDCcylindrical reservoir
0.25 amp at 230 VDC
521-001-200Blowout Assembly15 amp at 115, 230 or 480 VAC6, 12 or 20-pint or poundP3
0.5 amp at 115 VDCcylindrical reservoir
0.25 amp at 230 VDC
521-001-210Blowout Assembly15 amp at 115, 230 or 480 VACAll tanksP4
6.2.2.1 The adjustment procedure for the high-pressure
switch is as follows:
WARNING
•Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
•To avoid possible system damage, change the
blowout disc to match the new pressure switch
setting. (Refer to Paragraph 6.2.1.)
a.Turn off electrical power to the lube system.
b.Connect control to pressure source.
c.With power disconnected, slide cover toward electrical
terminations while twisting it to overcome friction.
d.Connect power to terminals or leads.
e.Insert screwdriver into adjustment slot and turn clock-
wise to increase setting or counter-clockwise to de-
crease setting.
For setting on rise, apply desired pressure and turn
adjustment (clockwise facing cable end of pressure
switch) until switch clicks and/or tester confirms contact
transfer (Circuit across N.O. and COM. terminals
closes). For setting on fall, apply pressure equal to
normal system operating pressure. Reduce source
pressure to set point value. Turn adjustment counter-
clockwise until switch clicks and/or tester confirms
contact transfer (circuit across N.C. and COM. closes).
6.3MOUNTING INSTRUCTIONS
6.3.1All high-pressure switches and blowout options are
connected to the outlet of the manifold and mounted to
various locations on the reservoir or tank. Refer to assembly
Paragraphs 6.4.3, 6.5.3 and 6.6.3 for specific assembly
instructions.
6.4HIGH-PRESSURE SWITCH
MAINTENANCE (OPTION P1)
6.4.1General. Maintenance tips, disassembly and
assembly procedures for the high-pressure switch are
discussed in Paragraphs 6.4.2 and 6.4.3. A typical pressure
switch is shown in Figure 6-2 and should be referred to
during the discussion.
6.4.2High-Pressure Switch Maintenance Tips. No
maintenance is required on the high-pressure switch. If the
switch is suspected to be defective, check all wiring to the
switch before removing any components.
NOTE
Relieve system pressure before removing any
components.
6.4.3Assembly/Disassembly of High-Pressure Switch.
Figure 6-2 shows a typical high-pressure switch mounted to
a manifold. All components of the unit are connected by pipe
threads and are easily assembled or disassembled. The
blowout assembly (3) is connected to the IND port of the
manifold and the pressure switch (1) is connected by fittings
to the LUBE OUT port of the manifold. Normally, the only
components which may require removal or replacement are
the pressure switch (1) and the blowout disc (5). The
pressure switch (1) is easily screwed out after all electrical
connections are removed.
6.4.3.1 The blowout disc replacement procedure is as
follows:
a.Remove pressure relief nut (6) from adapter fitting (4).
b.Remove blowout disc (5).
c.Install new blowout disc (5) in pressure relief nut (6).
d.Install pressure relief nut (6) on adapter fitting (4) and
torque to 5 ft lbs.
6.4.4Pressure Switch Parts Lists. Table 6-4 identifies
the parts indexed in Figure 6-2.
f.After completing adjustments, slide cover closed order
adjustment compartment. Recheck set point.
6-3
Modu-Flo® System
42000
T able 6-4. High-Pressure Switch Parts List
Index
NumberPart NumberDescriptionQuantity
521-001-220HIGH-PRESSURE SWITCH ASSEMBL Y (Option P1)--
6.5RESERVOIR BLOWOUT SWITCH
MAINTENANCE (OPTIONS P2 and P3)
6.5.1General. Maintenance tips, disassembly, and
assembly instructions for reservoir blowout switches are
discussed in Paragraphs 6.5.2, and 6.5.3. A typical reservoir
with blowout switch is shown in Figure 6-3 and should be
referred to during the discussion.
6.5.2Reservoir Blowout Switch Maintenance Tips. No
maintenance is required on the blowout switch. If the switch
assembly is suspected to be defective, check all wiring to
the switch before removing any components.
WARNING
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
S.A.
MANIFOLD
(REF)
4-3/4”
1
2
NOTE
Relieve system pressure before removing any
components.
6.5.3Assembly/Disassembly of Blowout Switch. Figure
6-3 shows a typical blowout switch mounted on a reservoir.
All components are connected by pipe threads and tubing
and are easily assembled or disassembled. The blowout
body (14) is connected to the IND port on the manifold. The
return elbow (15) is piped into the fill port of the reservoir.
Normally, the only components which may require removal
are the switch (5), indicator assembly (10), and blowout
disc. Access to these components is easily achieved after
removal of any connective tubing.
6.5.4Reservoir Blowout Switch Parts Lists. Table 6-5
identifies the parts indexed on Figure 6-3.
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6-4
42000Modu-Flo® System
R
Table 6-5. Reservoir Blowout Switch Parts List
Item
NumberPart NumberDescriptionQuantity
521-001-190HIGH-PRESSURE BLOWOUT SWITCH ASSEMBL Y (5 pint/lb)-1521-000-760BRACKET, Mounting, for 5 lb and 5 pt1
2416-701-992SCREW, Round head, 6-32 x 1-3/8 inch, part of2
3421-070-050LOCKWASHER, No. 6, part of part No. 511-573-0304
4410-030-050NUT, Hex, 6-32, part of Part No. 511-573-0302
5529-726-001SWITCH, Part of Part No. 511-573-0301
6501-967-001BRACKET, Switch, part of Part No. 511-573-0301
7419-110-020SCREW, Socket-head, 10-24 x 1/2 inch2
8417-060-060SETSCREW, 1/4-20 x 1/2 inch2
9435-370-020FITTING, Elbow , 1/8 NPT x 1/4 inch tube2
10511-160-001INDICATOR ASSEMBL Y, Part of Part No. 51 1-573-0301
11+TUBING, Copper, 1/4 inch outer diameter x 0.030 wall3 ft
12509-223-000SPUD, Union1
13509-224-000NUT, Union1
14509-208-000BODY, Blowout1
15412-270-030ELBOW, 1/4 inch NPT1
16412-380-020TEE, 1/4 inch NPT1
17509-365-030CHECK VAL VE ASSEMBLY1
18435-360-030FITTING, S traight, 1/4 tube x 1/4 inch NPT1
--511-573-030BLOWOUT AND SWITCH ASSEMBLY1
--560-900-270BLOWOUT DISCS, Bag of 6, 1450 psi1
19435-360-020FITTING, S traight, 1/4 inch tube x 1/8 inch NPT1
* See Table 6-1 for other disc pressure ratings.
+ Tubing purchased separately
521-001-200HIGH-PRESSURE BLOWOUT SWITCH ASSEMBL Y (6, 12 or 20 pint/lb)--
521-000-770BRACKET, Mounting, for 6 lb, 12 lb, 20 lb, 6 pt, 12 pt, and 20 pt1
Part No. 511-573-030
*
2,3,4
5
Figure 6-3. Reservoir Blowout Switch
Assembly (Front View)
PLUNGER
19
18
17
6
7
1
8
9
10
11
9
16
15
14 13
12
6-5
Modu-Flo® System
42000
6.6TANK BLOWOUT SWITCH
MAINTENANCE (OPTION P4)
6.6.1General. Maintenance tips, disassembly, and
assembly instructions for tank blowout switches are discussed in Paragraphs 6.6.2 and 6.6.3. A typical tank with
blowout switch is shown in Figure 6-4 and should be
referred to during the discussion.
6.6.2Tank Blowout Switch Maintenance T ip s. No
maintenance is required on the blowout switch. If this switch
assembly is suspected to be defective, check all wiring to the
switch before removing any components.
WARNING
Disconnect and lock out all power from the
assembly before attempting disassembly.
Serious injury may result from electrical shock.
Relieve system pressure before removing any
components.
6.6.3Assembly/Disassembly of Blowout Switch. Figure
6-4 shows a typical blowout switch mounted on a tank. All
components are connected by pipe threads and tubing and
are easily assembled or disassembled. The blowout body
(15) is connected to the IND port on the manifold. The return
elbow (12) is piped into the fill port of the reservoir. Normally,
the only components which may require removal are the
switch (6), indicator assembly (8) and blowout disc. Access
to these components is easily achieved after removal of any
connective tubing.
6.6.4Tank Blowout Switch Parts List. Table 6-6 identifies the parts indexed on Figure 6-4.
NOTE
T able 6-6. Tank Blowout Switch Parts List
Item
NumberPart NumberDescriptionQuantity
521-001-210BLOWOUT SWITCH ASSEMBL Y (Option P4)--
1435-360-020FITTING, Straight, 1/8 NPT x 1/4 inch tube2
2416-701-992SCREW, Round head, 6-32 x 1-3/8 inch, included in Part No. 511-573-0202
3421-070-050LOCKWASHER, No. 6, included in part Kit No. 511-573-0204
4410-030-050NUT, Hex, No. 6-32, included in Part No. 511-573-0202
5419-110-020SCREW, Socket-head, 10-24 x 1/2 inch2
6529-726-001SWITCH, Included in part No. 511-573-0201
7501-967-001BRACKET, Switch, included in part No. 511-573-0201
8511-160-001INDICATOR ASSEMBLY, Included in part No. 511-573-0201
9435-370-020FITTING, Elbow, 1/8 NPT x 1/4 inch tube1
10412-380-020TEE, 1/4 NPT1
11509-365-030CHECK VALVE ASSEMBL Y1
12435-370-030FITTING, Elbow, 1/4 inch male pipe x 1/4 inch tube1
13509-223-000SPUD, Union1
14509-224-000NUT, Union1
15509-208-000BODY, Blowout1
16+TUBING, Copper, 1/4 inch outer diameter x 0.030 wall4 ft
--511-573-020BLOWOUT SWITCH ASSEMBL Y1
--560-900-270BLOWOUT DISCS, Bag of 6, 1450 psi1
*
* See Table 6-1 for other disc pressure ratings.
+ Tubing purchased separately
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6-6
42000Modu-Flo® System
R
6
PLUNGER
16
12,3,4
5
7
8
9
6-7
/(6-8 Blank)
1,13,14,15
12
11
10
Figure 6-4. Tank Blowout Switch Assembly (Side View)
The Pneumatic Solenoid Valve option S1 is designed for
use in 115 VAC applications, while the S2 option is for 24
VDC applications. The solenoid valve is supplied with the
selection plate in a normally closed configuration, making
the solenoid a two way valve. It comes equipped with a
manual override operator and with 18 inch long #18 AWG
coil lead wires.
7.2OPERATION
When voltage is applied to the solenoid coil, the valve is
opened, allowing air to flow through to the pump manifold
Modu–Flo®
System
and to the pneumatic piston in the pump. As air is being
supplied, the pneumatic piston moves forward and pushes
the lube piston forward which discharges lubricant to the
system. When voltage is dropped out, air flow is stopped.
The pneumatic and lube piston are returned by the piston
return spring, thus allowing the pump to reprime for the next
cycle.
7.3INSTALLATION
Installing the solenoid valve to the pump manifold requires
making sure the o-rings (4) are in place. Mount the solenoid
valve to the pump manifold port stamped “SA” with the valve
bolt. Torque to 10-15 ft. lbs.
Table 7-1. Pneumatic Solenoid Parts List
Item NumberPart NumberDescriptionQuantity
521-001-020115 V AC SOLENOID ASSEMBL Y (S1)
521-002-10024 VDC SOLENOID ASSEMBLY (S2)
1521-000-5401 15 V A C SOLENOID V AL VE WITH COIL1
521-004-55024 VDC SOLENOID VAL VE WITH COIL1
2521-000-550MANIFOLD BLOCK1
3521-000-560BOLT-MOUNTING1
4422-010-160O-RING2
5416-060-120SCREW-#8-32 X 1-1/42
6521-000-542NO/NC “PORT PLA TE”, P ART OF ITEM 11
8.1.1DC Timer. The DC timer is a solid-state, 12 to 32
VDC unit that energizes a DC solenoid when it is time to
start a lubrication cycle. The solenoid actuates the lubrication pump. The interval between cycles is adjustable from 1
to 10 minutes in eight steps. The duration of the lubrication
cycle is not adjustable and is 30 seconds long. The DC
Timer also features elapsed-time memory to ensure that
the interval between cycles is maintained during equipment
shutdown. A manual run button simplifies startup, testing,
and venting of lubrication lines and points. The manual run
button initiates one 30 second cycle each time it is depressed. Refer to Paragraph 8.2.1 for installation instructions. Refer to bulletin 14511 for additional information.
The TC-1000 schedules lube frequency either on a time or
stroke/cycle basis in values ranging from 1-9999. The
pump run interval is also selectable in time or counts over
the same range.
The TC-1000 is easily programmed in the field using four
mini push-buttons. No special training or knowledge of
computer language is necessary. During power down or
outage, data is saved in EEPROM (Electrically Erasable
Programmable Read Only Memory). When power is
restored, counting and pump status is restored to values
prior to loss of power.
Available for 1 15 VAC, 230 VAC, 12 VDC, or 24 VDC operation. Pump Output voltage is the same as supply voltage.
8.1.2AC Timer. The AC timer is a solid-state, 115/230
VAC, 50/60 Hz unit that energizes a solenoid valve when it is
time to start a lubrication cycle. The solenoid valve (See
Paragraph 8.1.1) activates the lubrication pump. The total
cycle time is adjustable from 0.5 minute to 32 hours. The
duration of the lubrication pump cycle is adjustable from 12
seconds to 13 minutes. The AC timer has a built-in memory
to keep the timer active for 1-1/2 hours during power failures
and machine shutdowns. This feature eliminates the
prelube cycle when power is reapplied after short shutdowns. A manual run button simplifies startup, testing, and
bleeding of lubrication lines and points. When the manual
run button is depressed, it resets the system to the beginning of the cycle and signals the pump to run for the
duration of the lubrication cycle. Refer to Paragraph 8.2.2 for
installation instructions. Refer to bulletin 14521 for additional information.
8.1.3TC-1000 Timer/Counter . The TC-1000 Solid State
Timer/Counter is a microprocessor based multi-use
controller dedicated to the operation of centralized lubrication systems.
8-1
Refer to bulletin 14530 for additonal information.
8.1.4WMP Maxi-Monitor. The WMP Maxi-Monitor is
designed to control and monitor a lubrication system and its
accessories. It can be used to schedule and monitor the
operation of lubrication pumps and divider valves in
automatic lubrication systems. The WMP is available in AC
or DC power source models.
8.1.4.1 The WMP Maxi-Monitor controls lubrication schedules on either a time or a machine cycle/stroke count basis.
It will also continuously monitor and display the status of the
lubrication system it is controlling. It is capable of shutting
down a machine and lubrication system to protect it from a
loss of lubrication.
8.1.4.2 The WMP Maxi-Monitor is easily programmed. No
special training or knowledge of computer languages is
needed. Programming is done through a membrane
keypad located on the enclosure door.
Refer to bulletins 14750 and 14752 for additional
information.
Modu-Flo® System
42000
( – )
12 to 32 VDC
POWER SOURCE
ORANGE
(MEMORY)
Figure 8-1. DC Timer Wiring Schematic
( + )
TIMER
GROUND
INSTALLATION INSTRUCTIONS
1. DISCONNECT INPUT AND LOAD POWER SUPPLIES
AT THEIR SOURCE.
2. REMOVE (2) SCREWS AND LIFT OUT CIRCUIT BOARD
3. INSTALL 1/2“ CONDUIT CONNECTOR IN .840
DIAMETER HOLE.
4. CONNECT INPUT POWER LEDS TO INPUT
TERMINALS. 110/220 VAC 50/60 HZ.
5. CONNECT LOAD LEADS TO LOAD TERMINALS.
110/220 VAC 50/60 HZ. 3 AMP MAX.
6. CONNECT REMOTE MANUAL RUN IF DESIRED
(CONTACT ONLY)
7. INSTALL TIMER BOARD WITH (2) =6 X 1/2“ SCREWS
SUPPLIED MAX. TIGHTENING TORQUE 5 IN. LBS.
8. SET TIMER ON AND OFF TIMERS
9. CLOSE AND FASTEN COVER WITH 2 =10 X 3/4“
SCREWS SUPPLIED MAX. TIGHTENING TORQUE 7 IN
LBS AND APPLY POWER.
RED (+)
BLUE (+)
YELLOW ( – )
SWITCH
SOLENOIDBLACK
MANUAL RUN BUTTON
R
LUBRIQUIP
8
8
4
2
5
TOTALCYCLE TIME
MINUTES
HOURS
TOTALCYCLE TIME
MINUTES’ HOURS
16
16
CAUTION
DISCONNECT ALOCK
OUT POWER PRIOR
TO SERVICING TOAVOID
POSSIBLE ELECTRICAL
SHOCK.
9.4 MATERIAL CONSIDERA TIONS ................................. 9-2
9.4.1 Material Cleanliness ..................................... 9-2
9.4.2 Temperature Effects ...................................... 9-2
assembly still must be bled to remove air which will be
trapped inside the pump. To do this, loosen the setscrew in
the TEST port while the pump is in the dispense stroke.
Tighten the setscrew before the pump reloads. Lubricant
should come out of the vent hole when the pump is dispensing. Cycle the pump several times until air-free
lubricant is dispensed out of the bleed hole, then tighten the
setscrew.
9.2.1System Setup.
9.2.1.1 Before attempting to operate any system, check the
following:
a.Check that the reservoir or tank is securely fastened to
a vertical surface. Make sure that the fill cup or greasefill fitting may be easily reached.
b.Check that the manifold is securely connected to the
base of the reservoir or tank. If a remote manifold is
used, make sure it is securely fastened to a vertical
surface, and tubing or hose is connected from the
reservoir to the manifold inlet.
c.Check that the pump is securely fastened to the
manifold.
d.Check all electrical connections to any solenoids,
controllers, level switches or pressure switches used
on the system.
e.Check that all accessories plumbed into the manifold
are secure. Make sure all hose or tubing connections
are tight.
9.2.2System Filling. The reservoirs or tanks should be
filled as described in Section 2 of this manual. To fill the
remainder of the system, attach a hand pump to the system
fill check valve on the manifold and cycle the hand pump
until the system is filled.
9.2.3System Bleeding. Proper filling of the system will
reduce the chance of air entrapment. The manifold/pump
9.2.4System Start-up. Before starting any system, make
sure that all filling and bleeding steps have been completed. Refer to Bulletin 30103 for filling and bleeding a
series progressive system. Check the pneumatic or
hydraulic inlet pressure and verify that it is adjusted correctly.
The actual setting will vary from system to system depending on type of lubricant used and other system variables.
The correct pressure for any particular system will be
determined during initial setup of the system and should not
need to be changed.
9.2.4.1 Check the output of the lubricant pump. Adjust the
output as described in Section 3 of this manual.
9.2.4.2 The system is now ready to run. The pump is
cycled by an external source, such as a timer, counter,
control package, or customer-supplied directional valve.
Once this external source is engaged, the system will cycle
as programmed.
9.3OPERATING TIPS
9.3.1General. While the system is operating the
following components may be checked:
9.3.1.1 Check that the pump is cycling according to
schedule. The solenoid or directional valve which operates
the pumps should be actuated by the system controller.
9.3.1.2 Visually check the system for leaks and loose
fittings. Make sure that hoses do not become kinked and
are not rubbing on anything.
9-1
Modu-Flo® System
42000
9.3.1.3 If the reservoir or tank is not equipped with low-level
switch, visually check the lubricant level and refill before all
lubricant is used. If the reservoir or tank is allowed to run dry,
air will be introduced into the system, requiring that the
system be bled.
9.4MATERIAL CONSIDERATIONS
9.4.1Material Cleanliness. System life and consistent
operation will both be improved by using only clean lubricant.
On all pumps, the lube piston diameter is very close to the
diameter of the chamber in the pump body. Contaminants in
the lubricant could cause scoring in this area, resulting in
erratic pump operation and costly parts replacement. Make
sure that lubricant used to fill the system is clean. If there is
doubt about cleanliness, lubricant should be filtered before
being introduced into the system. After filtering the system,
make sure the lubricant supply is protected from debris. For
protection of divider valves and the equipment being lubricated, an in-line filter (oil) or strainer (grease) should be
installed between this pump and the first stage (master)
divider.
Lubriquip recommends a minimum oil cleanliness level of
ISO 18/14 per ISO standard 4406 for all oil systems.
Lubriquip further recommends that all grease systems be
equipped with a 100 mesh strainer. Refer to bulletin 15200
for available lubricant filters and strainers.
9.4.2Temperature Effects. Flow characteristics of the
lubricant may change if the area the Modu-Flo system is
used in goes through drastic temperature changes. Choose
a lubricant that will flow properly at all temperatures expected
in the system environment.
R
9-2
42000Modu-Flo® System
R
OPERATION AND
SERVICE INSTRUCTIONS
Modu–Flo®
System
SECTION 10
TROUBLESHOOTING
10.1 GENERAL ...............................................................10-1
10.1GENERAL
10.1.1Many system problems may be caused by loose
connections or air trapped in the system. Before removing
system components, it is a good practice to check all
connections to make sure they are tight. Also make sure the
T able 10-1. Modu-Flo T roubleshooting
ProblemPossible CauseCorrective Action
A. No lube is dispensed1. Reservoir or tank is empty.1. Refill as required.
from pump, but pump is
receiving air or hydraulic2. Air or hydraulic pressure is inadequate.2. Set pressure to proper setting.
operating signals.
3. If pump is single-acting, return3. Replace spring or change pump
spring may be defective.to double-acting. (Refer to Section 3.)
system is properly bled. Table 10-1 lists some of the
problems which may occur in the Modu-Flo system along
with possible causes and corrective actions. Disassembly
and assembly procedures for the system components are
contained in other sections of this manual and should be
referred to if a component needs servicing.
4. Pump needs servicing.4. Disassemble pump and replace
defective components. (Refer to Section 3.)
5. Pump adjustment screw is turned in5. Adjust pump. (Refer to Section 3.)
too far.
6. Pump is air bound.6. Bleed air through test port. (Refer to
Figure 4-1).
B. Blow-out disc has ruptured.1. High pressure exists in the system.1. Inspect dividers, lines, fittings, and lube
points to determine the source of high pressure. Correct problem and replace disc.
2. Excessive air or hydraulic flow to pump.2. Install a restrictor in the air or hydraulic
lines.
C. Pump output is erratic.1. System is not properly bled.1. Bleed system.
2. Pump needs servicing.2. Disassemble pump and replace
defective components. (Refer to Section 3.)
3. Pump adjustment assembly is leaking3. Tighten components of the adjustment
or sucking air during return stroke.assembly.
4. Defective o-ring.4. Repair pump or manifold. (Refer to
Sections 3 and 4.)
10-1
5. Setscrew and ball are loose in TEST5. Tighten setscrew.
port.
Modu-Flo® System
42000
T able 10-1. Modu-Flo T roubleshooting - Continued
ProblemPossible CauseCorrective Action
D. Pump is not receiving1. Electrical connections to solenoid or1. Check all connections and tighten
signal to operate.timer are defective.securely.
2. Timer or controller is set incorrectly2. Set timer or controller to correct
or is defective.setting. If unit is still not functioning consult
factory for assistance.
3. Pneumatic or hydraulic power supply3. Turn on power supply.
is turned off.