Continental Hydraulics J Design Series, PVR15-Manifold Series Service Manual
SERVICE MANUAL
PVR15-Manifold Series Pump
Installation, Startup, Operating Instructions,Parts Pages, Repair Procedures
"J" Design Series
CAUTION - Before performing any service
operation on any pump, be sure that all
pressure has been relieved from BOTH
SIDES of the system.
CAUTION - Before performing any service
operation on any pump, disconnect or lock
off power supply.
CAUTION - Before starting pump, be sure
that any resulting machine function will not
endanger persons or equipment.
PRODUCT IDENTIFICATION
Each pump has an Ordering Code stamped on its
nameplate. See Figure 1 for the location of the Ordering Code.
Ordering
Code
PVR15-15B1L-RM -0-1-J
This service manual applies to products with Ordering
Codes like the sample in Figure 2.
Figure 2
INSTALLATION
PUMP DRIVE AND MOUNTING
When mounting the pump and motor, care must be
taken to align the pump and motor shafts within .003
T.I.R. direct inline through a jaw type/flexible web
coupling. This is recommended for all Continental
pumps. Tire-type flexing elements and chain-type
drives are not recommended. With belt drives, please
consult factory.
To avoid axial and radical end loading of the pump
shaft, do not couple the pump and motor shafts rigidly.
Allow freedom at the coupling for the two shafts to ride
independently.
To prevent end loading, the space between the pump
and motor shaft ends should be ¾ inch for PVR15
pumps, or as the coupling manufacturer specifies.
PIPING AND RESERVOIR
Figure 1
Form No. R32.00 Rev. 4/99
The pump should be mounted with a minimum number
of elbows or fittings. The pump suction should be at
least 1¼-inch tube/pipe for PVR15 pumps.
1
For any system and combination of piping except High
Water Based Fluids (HWBF), the vacuum at the pump
inlet must not exceed seven inches of Mercury, (5 inch
Hg. for fire resistant fluids). HWBF Pumps are to have
a positive inlet head in the range of 0.5-inch Hg. to 20
inch Hg.
Piping should be done with pickled pipe or seamless
tubing free of dirt and scale. Do not use galvanized or
other pipe that tends to flake off.
5. Rotate pump and motor by hand to insure free
rotation.
6. Set the machine controls to open the circuit and
allow free flow from the pump back to tank or
connect the pump outlet line directly to tank. Jog
the motor on and off several times (on, two seconds, off three seconds) until the pump is primed.
Check pump for proper direction of rotation during
the jogging.
A 100-mesh screen (60 mesh for fire resistant and
HWBF) should be used on the pump suction line. The
screen should be located approximately two inches
from the bottom of the tank. All lines returning oil to the
tank should discharge at least two inches below the
minimum oil level and should be separated from the
pump suction area by means of a baffle. These lines
should also include a 10-micron return line filter, with
the exception of the case drain line.
The pump case drain should be connected directly to
the tank. Pressure in excess of 10 psi in the case
drain line can result in shaft seal leakage. It is recommended that the case drain be returned to the tank by
a separate 3/8-inch line.
STARTUP PROCEDURES
The following instructions apply for initial startup of the
hydraulic pump. After an extended shutdown period,
start with item 5.
CAUTION - Never start a new pump installation against a blocked system.
1. Check the nameplate for model number and rpm.
The arrow on the pump casting indicates direction
of rotation.
2. Pump suction line should extend below the lowest
point of oil level but not less than two inches above
reservoir bottom.
7. After the pump has been primed, run it for several
minutes at lower than normal pressures with an
open or intermittently open system which permits
oil flow. This will purge entrapped air from the
pump and system.
8. Neither volume adjustment nor pressure adjustment
should be adjusted until the pump has been primed
and running, and air is purged.
9. After air has been purged from the system, the
system can be closed and the pump adjusted to the
required operating pressure.
10. If necessary, the volume adjustment can be
adjusted to the required operating pressure.
11. When replacing pumps, the suction screen in the
reservoir must be removed and thoroughly cleaned.
Also, the suction line from the reservoir to the pump
should be flushed inside and out to remove any
contaminants. Pieces of metal from a damaged
pump can back up into this line. If they are not
removed, they will be drawn into the new pump and
destroy it. Start unit by using proper pump start-up
procedure items 1 through 10.
CAUTION - If both pressure and volume
modifications are supplied on the pump, the
pressure should be adjusted before the
volume. Volume should be adjusted at minimum pump
pressure or at deadhead. Stop adjustment at the
volume screw when pressure begins to drop.
3. The pump and motor shafts must be aligned within
.003 inches. (See Pump Drive and Mounting
directions above for restrictions).
4. Connect the case drain directly to tank (or to a heat
exchanger if the pump will be deadheading for long
periods of time during operation), using a full-size
line corresponding to the case drain in the pump or
manifold. If connected to a heat exchanger, the
case drain line should be protected with a 10 psi.
maximum relief valve in parallel with the heat
exchanger. No other return lines should be connected in common with the case drain return.
2
OPERATION
PRESSURE AND VOLUME ADJUSTMENTS
Pressure Control
All pumps (except those with special volume or pressure requirements) are adjusted to reduced pressure
before shipment and must be readjusted to the required system pressure after installation and start-up.
The pressure adjusting screw is located at the end face
of the compensator chamber. See parts page item
number 30. The adjusting screw has a right hand
thread; clockwise adjustment increases pressure;
counterclockwise reduces pressure.
Form No. R32.00 Rev. 4/99
A pressure gauge located at the pump must be used
when making adjustment to insure the pressure
settings do not exceed limits specified for the particular
pump of maximum system pressure.
Make all pressure settings with pump operating against
a closed circuit, that is with the output of the pump
blocked, and then check pressure throughout the pump
flow range.
3. See Pressure and Volume Adjustment Sensitivity
chart below.
4. Deadhead the pump, turn the volume screw the
proper number of turns to obtain the flow desired.
5. Return pump to flow condition and check flow rate.
If output flow is incorrect, switch pump to deadhead
and readjust per above.
Volume Control
Adjust volume at minimum pump pressure or at pump
deadhead. The volume adjusting screw is directly
opposite the pressure adjusting screw, see parts page
item number 55. The adjusting screw has a right hand
thread, turning the screw clockwise decreases the
maximum volume, turning the screw counterclockwise
increases the maximum volume. Pumps are set at a
maximum rated volume at the factory unless otherwise
specified.
Stop adjustment of the volume screw when pressure
begins to drop. See Sales Catalog for complete pump
performance specifications.
ADJUSTMENT PROCEDURES
To adjust the maximum output volume use the following steps:
1. Set the pump at minimum pressure.
2. Hand tighten the volume screw until it touches cam
ring. NOTE: The pump should be at full flow for this
step.
PRESSURE & VOLUME ADJUSTMENT SENSITIVITY
PUMP SIZE 15B 20B 30B
Pressure
Adjustment
Volume
Adjustment
Pressure
Change/Turn
Maximum
Torque
Flow Change
Turn
Approx. Min.
Flow Adj.
Maximum
Torque
(bar)
Ft-lbs.
(m-kg)
gpm
(lpm)
gpm
(lpm)
Ft-lbs.
(m-kg)
230
(16)
15
(2)
10
(38)
2
(7.5)
21
(3)
310
(21)
20
(3)
10
(38)
2
(7.5)
29
(4)
230
(16)
15
(2)
13
(49)
3.5
(13)
21
(3)
PSI
CAUTION - Turning the maximum volume
control in too far can force the cam ring overcenter and destroy the pump.
WEAR PLATE KITS
MODEL KIT NUMBER
15B 252620
20B 252621
VANE KITS
Includes Item: 7.
MODEL KIT NUMBER
All Models 250310
SEAL KITS
Includes Item: 13,14,15,16,17,24,25,27,28,29,34,37,39.
MODEL KIT NUMBER
All Buna N 250008
All Viton 250009
PVR15 KIT LIST
Includes Items: 3,6, and 21.
MODEL KIT NUMBER
15B 127894
20B 130690
COMPLETE REBUILD KITS
MODEL KIT NUMBER
15B 252777
20B 252778
Form No. R32.00 Rev. 4/99
ROTATING KITS
3
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