Concentric 10590 Instructions for use

6.53
3.50
9.44 MAX.
5.79
3.26
2.442.44
2.06
9/16-18 SAE
STRAIGHTTHREAD
OUTLET/RETURN PORT
40 MICRON BREATHER
3/8-18 NPT FILL PORT
T8
L2
(BLACK)
CONNECTION
CUSTOMER
L1
NORMALLY OPEN
TERMINAL
COM M O N T ERM INA L
JUM P E R
M
GND
T5
T3
T4
ELECTRICAL SCHEMATIC
T1 T2
JUM P E R
.129
2200
PSI
HYDRAULIC SCHEMATIC
M
33.1
6.58 O .D.
8.98 MA X.
4.00 22. 43
1.19 6.5 8
1.50
1.50
2.00 FILL PORT
1.31
MOTOR STAR T SWITCH
PUSH TO START-H OLD TO RUN
3.5 HP., 115/208-230 VOL T,SINGLE PHASE
60HZ., 3450 R.P.M., 56 FRAME, T.E.N.V.
ADJ. R ELI EF VA LVE
SET @ 2200PSI
3.0 Ga l. Nom . Cap.
HOLD
RELEASE
C
L
TOAVOID PREMATURE FAILURE
DO NOTJOG SWITCH
Figure 1
Description
The Concentric AC hydraulic power unit is specifically designed
for auto hoist applications. However, it may be used for other
intermittent duty applications that utilize the power up - hold -
gravity lower hydraulic circuit. This hydraulic unit must be used
for mounting in a vertical position (motor up/reservoir down) and
is typically mounted on the side of the auto hoist frame. It is pre-
wired with a push button start switch. Additional features include
a load holding check valve, a manual lowering valve with “feather-
ing” capabilities and a 3 gallon capacity reservoir. The adjustable
relief valve is preset at 2200 PSI.
THIS HYDRAULIC UNIT IS SPECIFICALLY DESIGNED FOR
INTERMITTENT DUTY APPLICATIONS. ANY ATTEMPT TO RUN THE
UNIT FOR EXTENDED PERIODS OF TIME MAY CAUSE DAMAGE TO
THE 115/208-230 VAC ELECTRIC MOTOR.
Unpacking
Check unit for any apparent shipping damage. The contents of the
carton will included (1) AC hydraulic power unit and (1) breather
cap and (1) 45º street elbow. If any of these components are miss-
ing or there is any noticeable damage, please contact the office
where the item was purchased.
Specifications
Motor .......................................... 3.5 HP, 115/208-230 volt, 60 Hz., 3450
RPM, T.E.N.V., 56 frame, single phase
Pump........................................... .129 cu. in./rev. displacement, perfor-
mance is 1.9 GPM at 1750 PSI
Valving........................................ Check Valve
Manual release valve
Relief valve factory set at 2200 PSI
Porting........................................ 9/16-18 SAE outlet/return for single
acting cylinder, 3/8-18 NPT Cylinder
Vent Port
Rotation ..................................... CW looking at drive end of motor
Reservoir.................................... 3 gallon capacity, cylindrical
Accessories ............................... Push button momentary contact start
switch
Mounting................................... Plumbed for vertical mount.
SHAFT SEAL P/N 2120120
GOLD GASKET P/N 2260084
READ CAREFULLY BEFORE ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE OR MAINTAIN THE PRODUCT DESCRIBED. PROTECT
YOURSELF AND OTHERS BY OBSERVING ALL SAFETY INFORMATION. FAILURE TO COMPLY WITH INSTRUCTIONS COULD RESULT IN
PERSONAL INJURY AND/OR PROPERTY DAMAGE! RETAIN INSTRUCTIONS FOR FUTURE REFERENCE.
OPERATING INSTRUCTIONS & PARTS MANUAL
AC HYDRAULIC POWER UNIT
FOR AUTO HOISTS
MODEL 10590
Concentric OIPM P/N_________________269xxxx revised 04/25/2013
WARNING!
M
GND
L2
(WHITE)
L1
(BLACK)
NORMALLY OPEN
TERMINAL
T1
T4
T8
T2
T3
T5
ELECTRICAL SCHEMATIC
FOR 208-230 VOLTS (REF.)
COMMON TERMINAL
CONNECTION
CUSTOMER
AUTO HOIST POWER UNIT ORDERING DATA
Nominal Nominal Factory Preset
GPM @ Operating Relief Valve Load Dim. Dim. Dim. Stock Northern
CIR 3450 RPM PSI Setting HP RPM Volts PH. Hz. Amps L W H Number Number
0.129 1.90 1900 2200 3.5 3 115/208-230 1 60 35 32.2 8.8 9.07 1280624 10590

General Safety Information
DISCONNECT POWER BEFORE SERVICING THIS EQUIPMENT.
1. Follow all local electrical and safety codes, as well as the
National Electrical Code (NEC) and the Occupational Safety and
Health Act (OSHA).
2. For Single Phase Motors use 3-wire cords with 3-prong ground-
ing type plugs.
3. Make certain that wire size is adequate for horsepower require-
ments.
NOTE: Voltage drop increases with the length of power cord.
Larger wire diameter may be required.
4. Nameplate voltage must be available at the motor when it is
operating. Avoid voltage drop with adequate wiring.
5. Replace or repair damaged or worn power cord immediately.
6. The use of 3-prong single phase adapters in Canada is prohibited
by the Canadian Electrical Code.
7. DOUBLE CHECK ROTATION! Motor rotation is clockwise facing
drive end of motor.
8. On start-up, jog the motor to prime the pump to insure
adequate lubrication. After inlet line is full, motor may be oper-
ated at full speed.
NEVER RUN THE PUMP DRY.
9. Keep all lines as short as practical.
10. Never exceed the maximum operating pressure.
11. Do not overtighten fittings, bolts, etc., as this can damage the
units.
12. Provide adequate cooling for the hydraulic oil so as not to
allow oil and/or component damage due to excessive tem-
peratures. Excessively high operating temperatures can be
hazardous and may cause property damage and/or personal
injury.
13. Follow safety guidelines as recommended by Auto Hoist
Manufacturer.
Assembly
The 10590 Auto Hoist unit comes fully assembled from the factory.
Just remove the filler breather and fill the reservoir with oil.
Installation
1. Select a good location to mount the hydraulic power unit. This
style of unit is usually mounted on the side of the auto hoist
frame. Mount at least 18.0” above the floor. Choose a clean,
dry area with adequate ventiliation and preferably near the
electric power source.
2. This hydraulic power unit is designed for vertical mount with
motor feet up and reservoir down. Choose a flat mounting
surface to bolt motor base to. See unit dimensions for motor
base bolt pattern.
THIS UNIT IS INTERNALLY PLUMBED FOR VERTICAL MOUNTING
AS NOTED ABOVE. MOUNTING THE UNIT IN AN INCLINED PLANE
OR ANY OTHER POSITION WILL GREATLY REDUCE USABLE OIL
IN THE RESERVOIR. THIS CAN CAUSE OIL FOAMING, LIMITED
CYLINDER STROKE, ERRATIC MOVEMENT OR HYDRAULIC
COMPONENTS, AND PUMP FAILURE.
TO MINIMIZE CONTAMINATION PROBLEMS, DO NOT REMOVE
PLASTIC SHIPPING PLUG FROM HYDRAULIC UNIT UNTIL YOU
ARE READY TO INSTALL HOSE AND FITTINGS.
3. HYDRAULIC INSTALLATION - Make sure that work area and
hydraulic components are clean and free from dirt, lint, etc.
4. Remove the vent screw and washer that is located next to the
reservoir fill port with a phillips head screwdriver. When you
begin filling the reservoir with hydraulic oil, this vent will allow
trapped air in the reservoir to escape and reduce reservoir fill
time.
5. Fill the hydraulic unit reservoir through the 90° street elbow
(that you previously installed) with a good quality automatic
transmission fluid (ATF). Use a clean funnel fitted with a fine
mesh wire screen.
6. You will know that the reservoir is full when fluid begins to
dribble from the vent screw hole.
7. Reinstall the vent screw and washer.
8. Install plastic breather in 90° street elbow.
9. Remove 9/16/18 SAE O-ring shipping plug from power unit
and install appropriate hose and fittings.
DO NOT USE TEFLON TAPE! THIS UNIT IS EQUIPPED WITH SAE
O-RING TYPE PORTS.
DO NOT OVERTIGHTEN FITTINGS.
10. ELECTRICAL INSTALLATION - Motor nameplate voltage must
be available at the motor when it is operating. Choose a site
that avoids long power cord runs. Voltage drop increases
with the length of power cord. Larger wire diameter may be
required.
– 2 –
269xxxx MODEL 10590
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION

Installation (Continued)
When wiring the motor, follow all local electrical and safe-
ty codes as well as the National Electrical Code (NEC) and
Occupational Safety and Health Act (OSHA).
For Single Phase Motors use 3-wire cords with 3-prong ground-
ing type plugs.
REPLACE OR REPAIR DAMAGED OR WORN POWER CORDS
IMMEDIATELY.
DO NOT OPERATE UNITS WITHOUT PROPER GROUNDING.
DO NOT RUN HYDRAULIC UNIT DRY; SEVERE PUMP DAMAGE
MAY RESULT.
Always shut electrical source off when servicing machinery.
Operation
PRIOR TO OPERATION:
1. Double check all hydraulic and electric connections.
2. Confirm that reservoir is filled with hydraulic fluid.
3. Put all equipment guards in place.
4. Clear all persons from work area.
5. Check for loose tools, equipment, or anything that might inter-
fere with operation of equipment.
OPERATION
1. START UP - When initially starting unit up, be sure to jog the
unit (intermittently run unit) several times. This will prime the
pump and fill the hydraulic lines.
2. After hydraulic lines have been filled check reservoir for suf-
ficient oil level. Replenish oil level if necessary.
DO NOT OVERFILL.
AUTO HOIST SAFETY GUIDELINES:
A. Remain clear of lift when raising or lowering vehicle.
B. Do not exceed weight capacity of lift.
C. Clear area if vehicle is in danger of falling.
D. Avoid excessive rocking of vehicle when on lift.
E. Lift should be used by trained operator only.
F. Use vehicle manufacturer’s lift points.
G. Always use safety stands when removing or installing
heavy components.
H. Keep feet clear of lift while lowering.
I. Allow lift access to authorized personnel only.
J. Read operating and safety manuals before using lift.
K. Proper lift maintenance and inspection are necessary for
safe operation.
L. Do not operate a damaged lift.
Maintenance
1. Keep the reservoir filled with hydraulic fluid. Use a good qual-
ity automatic transmission fluid (ATF). To refill the reservoir
with clean oil, use a clean funnel fitted with a fine mesh wire
screen. Do not use a cloth strainer. Most pump/fluid failures,
valve malfunctions, and short unit life can be traced directly or
indirectly to dirt or other foreign materials (water, chips, lint,
etc.) entering or already in the hydraulic system.
2. Make frequent inspections of hydraulic oil and change if con-
taminated.
3. Regularly inspect hydraulic hoses and fittings for wear or leak-
age.
4. Keep the unit clean of dirt and foreign materials.
5. Keep electrical connections clean.
269xxxx MODEL 10590
– 3 –
WARNING!
CAUTION
CAUTION
CAUTION
CAUTION
WARNING!
CAUTION

269xxxx MODEL 10590
– 4 –
Motor won’t start
Will not pump oil (Motor
runs but cylinder does not
move, or moves slowly)
Pump motor unit is noisy
Pump does not develop
full pressure
SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
1. Loose connection
2. Circuit breaker tripped
3. Voltage drop
4. Seized pump
5. Start switch
1. No oil in reservoir
2. Motor rotation wrong
3. Oil level low
4. Suction strainer is clogged
5. Double acting cylinder piston seals are cut or
worn out
6. Reservoir breather is dirty or clogged
1. Low oil level
2. Air in system
3. Suction strainer or in-line filter is clogged
1. System relief valve set too low or leaking
2. Oil temp. is too high
3. Pump is worn out
4. Double acting cylinder piston seals are cut or
worn out
1. Check wiring
2. Reset circuit breaker
3. Use heavier gauge wire
4. Replace pump
5. Replace start switch
1. Check oil level, refill
2. Rewire
3. Add oil as needed
4. Clean suction strainer
5. Replace or repair cylinder
6. Clean reservoir breather and reinstall
1. Add oil as needed
2. Bleed air from highest fitting in system
by loosening fitting very slightly and
operating unit until bubbling of air
stops, then tighten
3. Clean suction strainer or in-line filter
1. Check system relief valve for proper setting
with pressure gauge in outlet line
2. Let oil cool below 140°F
3. Replace worn parts or pump
4. Replace or repair cylinder
Troubleshooting Chart