Stanley MB05 - Flow Test Procedures

MB05 User Manual ◄ 23
The correct performance of this procedure will verify if
the auxiliary circuit of the carrier is adequate to properly
operate a Stanley attachment.
This procedure is generic in form. It is the end users
responsibility to ensure that this procedure will work with
his specic type of equipment.
If an adequate ow meter is not available contact your
Stanley Hydraulic Distributor for assistance.
TEST PROCEDURE
1. With the auxiliary circuit (or kit) completely installed
connect the ow meter between the tool inlet and
outlet hoses.
NOTE:
Always use the hoses that are supplied for the at-
tachment and make sure the machine hydraulic
oil is between 90 to 120 °F. This will assure correct
readings and adjustments.
2. With the machine setting at the mode that’s going to
be used to operate the attachment record the GPM
_____.
Locate the correct ow for the attachment in the
manual under the specication section. Adjust the
machine to the correct GPM.
NOTE:
If possible, always set the machine to the highest
GPM output mode. This will prevent the operator
from over owing the attachments.
3. Once the correct GPM ow is achieved fully open
the restrictor on the ow meter.
4. With the machine in the attachment mode set in
step 2 record the back-pressure. At this point the
pressure reading on the pressure gauge is the back-
pressure in the circuit. This pressure must not ex-
ceed 200 psi/13.5 bar.
Excessive back-pressure will slow the attachments
operation and lead to premature seal failures and
over heating.
Record the back-pressure psi.
5. Close the restrictor valve on the ow meter until the
attachment relief starts to crack or open. The relief
valve opens when the ow rate (GPM), indicated on
the ow meter begins to decline rapidly. Locate the
tools operating system relief pressure in the speci-
cation section in the manual. Adjust attachment re-
lief to specication.
NOTE:
The relief valve pressure must be greater than the
operating pressure of the attachment and three
times the back-pressure. Never use the relief valve
to control the ow rate in the circuit. Cracking pres-
sure means the loss of 4 or more GPM.
Record the relief cracking pressure psi.
Example:
Operation pressure of a breaker is 2700 psi. Back-pres-
sure is 150 psi. A good rule to follow when setting the
relief, multiply the back pressure by 3 then add this num-
ber to the operation pressure of the attachment.
Operating Pressure 2700 psi
Back-pressure 450 psi
Operating pressure of the tool 3150 psi
The relief valve setting must be greater than the estimat-
ed operating pressure of the tool. If the setting is lower,
damage to the circuit may occur. Excess heat will be
generated in the circuit which will damage the attach-
ment and carrier.
FLOW TEST PROCEDURES