Norco 910052A User manual

Instruction Sheet
L1987 Rev. B 06/13
IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage. If any shipping damage is found, notify
carrier at once. Shipping damage is NOT covered by warranty. The carrier is responsible for all
repair or replacement cost resulting from damage in shipment.
DESCRIPTION
The 910052AElectric Pump is highly portable, yet it’s powerful enough to handle many maintenance,
fabrication, construction, and lifting applications. The standard remote pendant makes any job
easier and safer. See specifications below.
SPECIFICATIONS
Operating Pressure 0 - 10,000 psi
Electrical Power Source 15 Amp, 120 VAC grounded, single-phase, 50/60 Hz
Motor Rating 1/2 HP Universal, 9 Amps @ 10,000 psi and 12,000 RPM
operates at 85-125 VAC, 85 - 89 dBA
Flow Rating 200 cubic inches/minute @ 0-200 psi
20 cubic inches/minute @ 200 - 10,000 psi
Operating Temperature 150ºF
Reservoir Capacity 1 gallon
Shipping Weight 39 lbs
910052A Electric Pump

2
SAFETY INFORMATION
WARNING
Do not use electric pumps in an explosive atmosphere. Adhere to all local and national
electrical codes.
WARNING
Do not use hoses, fittings or couplers with pressure ratings below 10,000 psi. Install
pressure gauges in the system to monitor operating pressure.
WARNING
Electric pumps have relief valves installed under the pump cover. The relief valve is factory
adjusted and must not be repaired or adjusted except by qualified hydraulic technicians.
CAUTION
To help prevent pump failure, check hydraulic reservoir fluid level prior to pump operation.
Add oil to maintain level 1/2" below the vent plug opening. Always be sure cylinders are
fully retracted before adding fluid to the reservoir. Use only high grade hydraulic oil. Use of
any other oils or fluids may void the manufacturers warranty.
CAUTION
To prevent damage to pump electric motor, check specifications. Use of incorrect power
source will damage the motor.
FAILURE TO COMPLY WITH THE WARNINGS AND CAUTIONS COULD CAUSE PERSONAL
INJURY OR EQUIPMENT DAMAGE.
INSTALLING GAUGE AND HOSE
Use thread sealant on the gauge and hose fittings. Use 1-1/2 wraps of Teflon tape (or suitable thread
sealant) on the fitting, leaving the first complete thread free of tape to ensure that tape does not shed
into the hydraulic system, causing damage. Trim loose ends.
1. Remove the pipe plugs from the control valve ports that are shown below.
2. Install a 0-10,000 psi pressure gauge into the gauge port.
3. Install a hydraulic hose in the valve outlet port. Tighten hose firmly in the port.
.375-18 NPT outlet port
in front side of valve. .250-18 NPT gauge port
in top of valve.

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OPERATION
Adjustable
Relief Valve
Pendant
Switch
Vent Plug
Pump
Switch
(remote on/off/
momentary on)
1. Keep power cords reasonably short to avoid power losses between the power outlet and the
pump. The pump will function at low voltage, but the speed and oil flow will be lower than
normal. For peak performance, use the shortest possible power cords.
2. Check all system fittings and connections to be sure they are tight and leak free.
3. Open the pump vent plug 1 or 2 complete turns. The vent plug is located on the front right corner
of the reservoir. The vent plug must be open whenever the pump is running.
4. The pump switch is located on the side of the shroud. It is a 3-position switch: top detent is “ON”,
middle is “OFF”, and bottom is momentary “ON”. Pressing the top “ON” position activates the
electrical circuit, but does not turn the pump motor on. The pump motor is activated by the
pendant switch. Pressing the lower portion of the pump switch will also activate the pump motor
as long as it is held down. This momentary switch position can be used as an alternative to the
pendant control.
5. The control valve is 3-way, 2-position valve. Moving the valve handle away from the pump (full
forward) is the “Advance” position. When the pump is activated, the cylinder plunger advances
until the pendant switch is released or the cylinder reaches maximum travel. Moving the valve
handle toward the pump releases pressure from the cylinder and the plunger retracts, with or
without the pump running.
6. When the hydraulic system is connected for the first time, air will be trapped in the components.
To ensure smooth operation, remove the air by running the system through several complete
cycles without a load on the cylinders. When the cylinders advance and retract without hesitation,
the air is vented from the system.
CAUTION
Do not continue pressurizing cylinders after they reach maximum travel or maximum
operating pressure.
7. Thermal Switch — To protect the pump from damage an internal thermal switch shuts off the
motor when the oil temperature reaches 150°F. When the temperature drops to 130°F, the switch
will automatically reset.

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RELIEF VALVE ADJUSTMENT
1. The main pump relief valve is internal and non-adjustable, factory set for 10,000 psi maximum
operating pressure. An additional external relief valve is located under a hex cap on the right side
of the pump. The external relief valve is adjustable from 10,000 psi down to 2000 psi.
2. Before you can adjust the relief valve, you must install a gauge in the gauge port and plug the
valve outlet port.
3. Remove the hex cap covering the relief valve adjustment screw. Using an Allen wrench, turn the
adjustment screw counter-clockwise one full turn.
4. Turn the pump “ON” and run the pump motor, watching the gauge reading for the maximum
pressure. Stop the pump, adjust the relief setting until the desired pressure is attained.
5. Check the setting by running the pump several times. If the gauge reading is the same each time,
the valve setting is stable. Replace the hex cap to cover the adjusting screw.
NOTE: To get the most accurate relief valve setting, start at a lower pressure and adjust up
to the desired relief valve setting.
MAINTENANCE
1. Check reservoir hydraulic oil level every 40 hours of operation. Add oil when necessary to bring
the level to 1/2" below the fill opening (vent plug hole).
CAUTION
Be sure all hydraulic cylinders are retracted before adding oil. If oil is added when
plungers are advanced, the oil in the hoses and cylinders will be returned to the reservoir
as the retracts. Then the reservoir will be over-filled.
2. Change the oil after every 100 hours of operation. If the pump is operated in very dusty areas or
at high temperatures, drain and refill more frequently. To drain the reservoir, remove the fill plug
(vent) from the top right corner of the reservoir. Tip the pump until all old oil is drained. Refill
with new oil through the same opening. Reservoir capacity is 1 gallon. Replace fill plug.
3. The pump reservoir can be removed for cleaning. If the pump is used in a dusty environment (ie:
construction), the reservoir should be cleaned once a year.
a. Drain the reservoir as described in step 2.
b. Remove the six screws securing the shroud to the reservoir. Lift the shroud off the reservoir.
A foam cushion wraps around the motor to keep electrical wires away from the motor. Use
caution to avoid damaging or pulling wire connections off the terminals.
c. Remove the eight screws holding the pump to the reservoir. Lift the pump off the reservoir
and remove the gasket. Thoroughly clean the reservoir with a suitable solvent. Use a soft
bristle brush to clean the two pick-up screens.
d. Re-assemble the pump and reservoir. Install a new gasket using RTV sealant. Position the
shroud over the motor with the shroud handle facing the valve side of the pump. Install the six
mounting screws and internal/external lock washers.
4. Check the electric motor brushes at least once every two years. For pumps in heavy usage
applications, check the brushes at least once every six months.
DANGER
To avoid possible electrocution, pump must be completely disconnected from electrical
power before brush servicing is attempted.

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TROUBLESHOOTING
The Troubleshooting Chart (see below) is intended as a guide to help you diagnose and correct
various possible pump problems.
Only qualified hydraulic technicians should troubleshoot and service the pump. For repair service,
contact the Norco Authorized Service Center in your area.
TROUBLESHOOTING CHART
Pump will not start. No power. Check electrical power source.
Wrong voltage. Check voltage specifications (see page 2).
Cylinder will not advance or retract. Fluid level low. Fill reservoir to proper level.
Intake screen clogged. Clean or replace intake screen.
Valve in wrong position. Shift valve to the pressure position.
Valve failure. Have pump repaired by a qualified
hydraulic technician.
Cylinder advances and retracts
erratically.
Air in the system. Remove air from the system by opening and
closing the tool until operation is smooth.
External leak in system. Tighten leaky connections. Replace any
damaged hoses and fittings.
Internal hydraulic leak. Have pump repaired by a qualified hydraulic
technician.
Pump fails to maintain pressure. External hydraulic leak. Tighten leaky connections. Replace any
damaged hoses or fittings.
Internal hydraulic leak. Have pump repaired by a qualified hydraulic
technician.
Low fluid output. Fluid level low. Fill reservoir to the proper level.
Pump component parts are leaking. Test to isolate leaks.
By-pass valve malfunction. Have pump repaired by a qualified hydraulic
technician.
Fluid intake screens on piston blocks
may be clogged with debris.
Inspect intake screens. Flush all components
of contamination. Replace any damaged
components.
CIRCUIT BREAKER (Pumps with Date Code “F” and Later)
In the event of an electrical overload, the pump circuit breaker will trip. After investigating and
correcting the source of the overload, push the circuit breaker button to reset.
FUSES (Pumps With Date Code “F” and Later)
Internal fuses protect the primary and secondary circuits of the control transformer. If a fuse blows,
investigate and correct the source of the failure. Then, replace the blown fuse with a new fuse of the
correct rating. For fuse ratings, refer to the Repair Parts Sheet for your pump model.
CAUTION
Always disconnect electrical power before replacing fuses.

WARRANTY
This Norco product is covered by a Limited Lifetime Warranty.
For details see the back cover of Norco's product catalog.
Norco Industries, Inc.
365 West Victoria Street
Compton, CA 90220
[phone]
Fax: [phone]
REPAIR SERVICE
If your Norco product requires service or repair, contact the
Norco Customer Service Department for the location of the
nearest Norco Authorized Service Center.
It will be necessary to provide the Norco Authorized Service
Center with a copy of the bill of sale if requesting warranty
repair. If the authorized service center determines your
product is eligible for warranty repair, the repair will be made
at no charge and returned freight prepaid. The cost of non-
warrantable service, repair, and return freight is the customer's
responsibility.
TEST STANDARDS
Canadian Standards Association (CSA)
Where specified, pump assemblies meet the design assembly and test requirements of CSA,
the Canadian Standards Association (Refer to CAN/CSA — C22.2 No. 68-92, Motor operated
appliances).
Conformité Européene (CE)
Where specified, an EC Declaration of Conformity and CE marking of product is provided. These
products conform to European Standards EN982:1996, EN1050:1998 and EN-ISO-12100-1&2:2003,
and to EC Directives 2006/42/EC, 97/23/EC, 2004/108/EC, 2006/95/EC and 97/23/EC.