Graco Maxi-Flo Pump Package User Manual
Maxi-Flo® Pump Package
DESCRIPTION
Designed for machinery requiring oil lubrication, this self-contained,
easy-to-install package includes a reservoir, electric-motor-driven
positive displacement pump, gear motor, and a choice of two control
systems with a low-level switch as standard equipment.
Optional accessories are a pressure gauge and a high pressure switch
which, when used with MS or MJ series type divider valves, provide an
economical means of effectively monitoring system operation.
Note: Designing information for a Maxi-Flo system is available in
Bulletin No. L23110.
SPECIFICATIONS
Pump Output per Stroke 0.010 in3 (0.165 cm3)
Pump Output per min of OnTime
3
12 rpm @ 60 Hz 0.120 in
10 rpm @ 50 Hz 0.100 in
Max System Operating
Pressure
Atmosphere Relief Indicator
Rating
Lubricant Oil, 60-30000 SUS
Operating Temperature
Min 0ºF (-18ºC)
Max - Intermittent
Operation
Max - Continuous Operation 120ºF (49ºC)
Reservoir Capacity 4 pints (1.9 liters), 116 in
Pump Gearmotors 115V, 50/60 Hz, shaded pole, 12 rpm
Reservoir Low Level Switch 115 VAC, 10 Watt Load
500 psi (34 bar)
600 psi (41 bar)
140ºF (60ºC), 50% duty cycle or less)
output @ 60 Hz, 10 rpm @ 50 Hz, 0.13
amp running current, 0.185 amp inrush
current
(1.97 cm3)
3
(1.64 cm3)
3
(1890 cm3)
Compact Pump / Control Package for automatic,
low-pressure, centralized oil lubrication systems.
FEATURES / BENEFITS
Choice of (1) Solid-State Time Control, or (2) Remote Control •
matches unit to application.
Easy installation. Just four mounting bolts and one electrical •
connection.
Transparent reservoir provides visual indication of oil level.•
Manual run push-button simplifies line filling, system bleeding or •
purging, and/or testing system integrity.
Housing and reservoir are durable molded plastic.•
Lights indicate low level, operating and power on.•
Standard Control Systems
Time Control Solid State Timer, 115 VAC, 50/60 Hz,
cycle time from 1/2 minute to 32 hours,
adjustable On-Time of 12 sec to 13
minutes
NOTE: If the On-Time is set greater or
equal to "Total Cycle Time" the timer will
cause the pump to run continuously
Remote Control 115 VAC, 50/60 Hz, terminal strip for
connection to machine control system
Accessories
Pressure Gauge 0-1000 psi (0-69 bar), back mount, 1/8
NPTF
High Pressure Switch Factory set @ 550 psi (38 bar), 10
ampere contact rating @ 115 VAC
Trabon® Maxi-Flo® Pump Package 13110
OPERATION
The pump gearmotor, energized by one of the three control units,
rotates an eccentric (A) connected to a rod that drives the pump
piston (B).
On the prime stroke, the piston opens the inlet port (C), allowing
oil from the reservoir to flow into the piston chamber. On the
power stroke, the piston motion closes the inlet port and forces
MOTOR COMPARTMENT
the oil through the spring-loaded check valve (D) and the outlet
port (E), and into the line to the divider valves. When "On", the
pump gearmotor rotates the eccentric at a fixed speed of one
pump strokes every 5 seconds on 60 hz, or one stroke every 6
3
seconds on 50 hz. The piston meters a fixed .010 in
(0.16 cm3) of
oil for every pump stroke. The total volume of oil delivered to the
system is determined by the frequency and length of "ON TIME"
that the pump is operated.
RESERVOIR
OUTLET PORT
ä
ä
ä
FIGURE 1
A
B
C
RELIEF
INDICATOR
PORT
D
E
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