Hydraulic Pressure
Switch
Instruction Manual
MODEL: CVS1
SFA Companies 10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419 * Fax: 816-891-6599
E-mail: sales@bvahydraulics.com Website: www.bvahydraulics.com
Maximum Operating Pressure 10,000 PSI
CVS1-M0 rev 082011
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
!
Printed in Taiwan
SAFETY AND GENERAL INFORMATION
Save these instructions. For your safety, read and understand
the information contained within. The owner and operator shall
have an understanding of this product and safe operating
procedures before attempting to use this product. Instructions
and safety information shall be conveyed in the operator’s
native language before use of this product is authorized. Make
certain that the operator thoroughly understands the inherent
dangers associated with the use and misuse of the product. If
any doubt exists as to the safe and proper use of this product
as outlined in this factory authorized manual, remove from
service immediately.
Inspect before each use. Do not use if leaking, broken, bent,
cracked or otherwise damaged parts are noted. If the valve
has been or suspected to have been damaged, discontinue
use until checked out by a BVA Hydraulics authorized service
center. Owners and operators of this equipment shall be aware
that the use and subsequent repair of this equipment may
require special training and knowledge. It is recommended
that an annual inspection be done by qualied personnel and
that any missing or damaged parts, decals, warning/safety
labels or signs be replaced with BVA Hydraulics authorized
replacement parts only. Any relief valve that appears to be
damaged in any way, is worn or operates abnormally shall be
removed from service immediately until such time as repairs
can be made.
PRODUCT DESCRIPTION
BVA Hydraulics Pressure Switch limits pressure developed
by the hydraulic pump, regulating the force imposed on other
components. A wide variety of applications exist for this
category of product. Special skill, knowledge and training may
be required for a specic task and the product may not be
suitable for all the jobs described above. The user ultimately
must make the decision regarding suitability of the product
for any given task and therefore accept responsibility for that
decision.
WARNING: Always wear proper personal protective
!
gear when operating hydraulic equipment (i.e. safety
glasses, gloves, etc.)
CAUTION: Always check connections before using.
!
Alteration of these products is strictly prohibited. Use
only those equipment and attachments provided and
approved by the manufacturer.
WARNING: To reduce the risk of personal injury and/or
!
property damage, ensure that the rated working pressure
of each pressurized attachment be equal to or greater
than the rated working pressure developed by the hydraulic pump.
SPECIFICATIONS
Model
Number
CVS1 10000 15 250 1/4-18 NPTF 5.622 1.992 1.402 1.32 1,000 - 10150
Operating
Pressure
(psi)
Amperage Voltage
Coupler
Size
INSTALLATION AND ADJUSTMENT
PUMP MOUNTED INSTALLATION
Mount the pressure switch to the control valve or the manifold
by threading the switch tting into the port provided for a
pressure gauge. An elbow may be used to change the angle,
and a tee tting can be used if both a pressure switch and
gauge are required.
PRESSURE REGULATING CONTROL ADJUSTMENTS
The pressure regulating valve can be adjusted to bypass oil
at a specic pressure setting so that the pump will continue
to run. The pressure switch can be adjusted to stop the pump
motor at a specic pressure setting and then restart the pump
when the pressure falls below that setting.
Pressure
Length
(in)
ADJUSTING THE PRESSURE REGULATING VALVE
Adjust the pressure regulating valve by increasing to a
preferred pressure setting. Do not adjust by decreasing from
a higher to a lower pressure.
1. Place pipe plugs in valve ports.
2. Loosen the locknut on the pressure regulating valve. Turn
the adjusting screw a few turns counterclockwise to decrease
the pressure setting to a lower than desired pressure.
3. Connect the pump power supply and place the hydraulic
control valve in the ADVANCE position. Set the motor control
toggle switch to RUN.
4. Slowly turn the adjusting screw in the clockwise direction.
this will gradually increase the pressure setting. When the
preferred setting is reached, lock the adjusting screw in position
by tightnening the locknut.
Width
(in)
Height
(in)
Weight
(lbs)
Switch
Adjustability
(psi)
Figure 1 - Switch is wired normally open and held close
by spring force.
2
ADJUSTING THE PRESSURE SWITCH
The pressure switch is generally used and adjusted with the
pressure regulating valve. A pressure switch can also be
used alone for activating electrical devices such as motors,
solenoids, relays, etc.which are located elsewhere in the
circuit.
1. Loosen the locknut on the pressure switch. Turn the
adjusting screw in the clockwise direction to increase
the pressure setting and counterclockwise to decrease
pressure.
2. Connect the pump power supply and place the control
valve in the ADVANCE position. Set the motor control
toggle switch on RUN.
! WARNING
3. Slowly turn the pressure switch adjusting screw in
counterclockwise direction, decreasing the pressure
setting until the pump motor shuts off. Then tighten the
locknut to lock the adjusting screw.
4. Move the hydraulic ow control valve to the RELEASE
position to relieve the hydraulic pressure. Move the
control valve back to ADVANCE and start the hydraulic
pump again to check the pressure setting. It may be
necessary to make a second ne adjustment.
Failure to comply with the following warnings
may result in personal injury as well as property
damage.
• Study, understand, and follow all instructions
provided with and on this device before use.
• The user must be a qualied operator familiar with
the correct operation, maintenance, and use of
cylinders.
Wear protec t i v e g e a r w h e n
operating hydraulic equipment.
This device is NOT suitable for use as support
device! As the load is lifted, use blocking and
cribbing to guard against a falling load. Stay clear
of a lifted load before it is properly supported.
Never rely on hydraulic pressure to support a
load.
Crush Hazard. Keep hands and feet
away from c ylinder and workpiec e
during operation.
• Do not exceed rated capacity of any equipment
in the system. The relief valve is designed for a
max. pressure of 10,000 psi.
• Do not connect to a pump with higher pressure
rating.
• Do not subject the system shock loads (a load
dropped suddenly causing the system pressure
to exceed rated pressure).
Do not pull, position or move system by hydraulic
hose. Use carrying handle or other means of safe
transport.
Do not handle pressurized hoses. Never attempt
to grasp a leaking pressurized hose. Ensure to
release the system pressure before disconnecting
hydraulic hose or connections.
Hydraulic uid can ignite and burn. Keep
equipment away from ames and heat.
heat will soften seals, resulting in uid leaks. Heat
also weakens hose materials.
System must be on a stable base which is able to
support the load while pushing or lifting. Use shims,
friction material or constrains to prevent slippage of
the base or load. Ensure cylinder is fully engaged
into/onto adapters, extension accessories.
Center load on cylinder. Distribute load evenly
across the entire saddle surface. Do not off-center
loads on a cylinder. The load can tip or the cylinder
can “kick out”.
Never try to disassemble relief valve, refer repairs
to qualified, authorized personal. Contact BVA
Hydraulics tech service for authorized service
center.
Do not subject hose to sharp objects or heavy
Heavy
impact.
hydraulic
Excessive
The system operating pressure must not exceed
the pressure rating of the lowest rated component
the system. Install a pressure gauge or other load
measuring instrument to monitor the operating
pressure. Burst hazard exists if hose, connection or
any other component in the system exceed its rated
pressure.
Avoid damaging hydraulic hose. Do not allow hose
to kink, twist, curl, crush, cut or bend so tightly that
uid ow within the hose is blocked or reduced.
Periodically inspect the hose for wear.
Hose material or seals must not come in contact
with corrosive materials such as battery acid,
creosote-impregnated objects and wet paint.
Never paint a coupler or hose.
•
No alteration shall be made to the valve.
•
Use only factory authorized fasteners, accessories
and hydraulic uid.
3
ADJUSTING THE PRESSURE SWITCH ELECTRICAL
SWITCH
WARNING: DIs connect the power supply b efore
!
removing the electrical box cover
1. Remove the top cover of the switch. Loosen the two set
screws located inside the switch body.
2. Place a .020 thick shim between the spring retainer and the
dowel pin. Loosen the spring retainer set screw and tighten
the spring retainer until it contacts the shim. Lock the spring
retainer in place by tightening the set screw.
3. Slide the switch bracket towards the shim until the switch
button contacts the shim surface. Secure the switch
mounting bracket by tightening the set screw located in
side the bottom cover.
4. Connect a multimeter to the electrical cord. Tighten the
switch adjustment screw against the switch mounting
bracket until the switch button contacts the platen and
actuates. The multimeter will react when the button actuates
and an audible click can be heard. Continue tightening the
switch adjustment screw 1/8 turn after the switch button
actuates.
5. Put the top cover back on the switch.
LIMITED LIFETIME WARRANTY
BVA Hydraulics®, represented in the United States by SFA Companies [“SFA”] warrants this product to be free from defects in
material and workmanship for the life of the product as long as the original purchaser owns the product. The warranty is nontransferable and is subject to the terms, exclusions, and limitations described below:
• Damaged components, including but not limited to bent rams, dented or crushed cylinder walls, broken welds or couplers as
well as worn out seals, o-rings and springs are the result of misuse and not covered by warranty and BVA Hydraulics will not
provide any warranty credit for such damaged components.
• This warranty does not cover ordinary wear and tear, overloading, alterations (including repairs or attempted repairs not
performed by BVA Hydraulics or one of its authorized personnel), improper uid use, or use of the product in any manner for
which the product was not intended or the use of which is not in accordance with the instructions or warnings provided with
the product.
• In the unlikely event that a BVA Hydraulics product fails due to material defect in workmanship, you may contact SFA for
disposition. In such cases, the customer’s sole and exclusive remedy for any breach or alleged breach of warranty is limited
to the repair or replacement of the defective product.
• Under no circumstances is BVA Hydraulics liable for any consequential or incidental damage or loss whatsoever.
• THIS WARRANTY IS LIMITED TO NEW PRODUCTS SOLD THROUGH AUTHORIZED DISTRIBUTORS AND OTHER
CHANNELS DESIGNATED BY BVA HYDRAULICS. NO AGENT, EMPLOYEE OR OTHER REPRESENTATIVE OF BVA
HYDRAULICS IS AUTHORIZED TO MODIFY THIS WARRANTY.
• THE FOREGOING IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES, INCLUDING
BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FOR A FITNESS FOR A PARTICULAR
PURPOSE.
• Components not manufactured by BVA Hydraulics including certain motor systems, gasoline engines, and other are not
covered by this warranty and instead are covered by the manufacturer’s separate manufacturer’s warranty provided in the
package.
• BVA Hydraulics’ liability in all cases is limited to, and will not exceed the purchase price paid for the product.
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Hydraulic Pressure
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10119
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Switch
Service Parts
MODELS: CVS1
SFA Companies 10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419 * Fax: 816-891-6599
E-mail: sales@bvahydraulics.com Website: www.bvahydraulics.com
Note: Not all components of the cylinder are replacement items, but are illustrated as a convenient reference of location
and position in the assembly sequence. To ensure safe and reliable performance, replace worn or damaged parts with BVA
authorized repair parts only.
Item Part No. Description Qty.
1 D09-6-2030-106 Switch Body 1
2 D09-4-2030-104 Cartridge Assy 1
3 D09-6-2033-102 Dowel Pin 1
4 D09-6-2034-104 Switch Bracket 1
5 D09-6-2035-106 Axle Bushing 1
6 644-1-0040-204 Set Screw 1
7 D09-4-2031-106 Spring Retainer Assy 1
8 644-1-0060-05311 Set Screw 2
9 E05-6-9208-107 Nylon Cable Gland 1
10 E05-6-9209-109 Power Line 1
11 E05-6-9300-105 Limit Switch 1
12 649-1-0030-123 Hex Head Bolt 2
13 D09-6-2038-102 Cover Plate 1
Item Part No. Description Qty.
14 649-1-0040-007 Hex Head Bolt 2
15 D01-6-1028-108 Tee 1
16 D09-6-2031-108 Cartridge 1
17 D09-6-2032-100 Bushing 2
18 573-7-0030-205 Backup Washer* 1
19 512-7-0030-109 O-ring* 1
20 608-3-0008-105 Circular Internal “CRTW”* 1
21 D09-6-2036-108 Spring Retainer 1
22 D09-6-2037-100 Spring Disc 2
23 512-2-0125-100 Compression Spring 1
24 666-5-0130-108 Retaining Ring “C” 1
25 641-1-0080-104 Adjusting Screw 1
26 651-2-0080-034 Nut 1
* D09-3-9930-109 D0930 Repair Kit 1
5
Note Page
SFA Companies
10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419
E-mail: sales@bvahydraulics.com
6
Note Page
SFA Companies
10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419
E-mail: sales@bvahydraulics.com
7
SFA Companies
10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419
E-mail: sales@bvahydraulics.com
8
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