MULTIPRESS M6P Series Troubleshooting guide

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SERIES “M6P” 6 TO 20 TON
Pacic Press Technologies/MULTIPRESS
714 North Walnut Street
Mount Carmel, IL 62863
618-262-8666
sales@pacic-press.com October 6, 2023
HYDRAULIC EQUIPMENT
OPERATING INSTRUCTIONS
AND SERVICE MANUAL

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CONTENTS
INTRODUCTION
MANUAL SCOPE 6
SERVICE POLICY 6
MULTIPRESS EQUIPMENT WARRANTY 6
SAFETY 6
WARNING AND CAUTION TAGS 7
SPECIFICATIONS 8
INSTALLATION
INSTALLATION INSTRUCTIONS 10
ELECTRIC 10
RECOMMENDED OIL SPECIFICATIONS 10
FILLING THE OIL RESERVOIR 11
SEQUENCE OF OPERATION
STARTING THE PUMP AND MOTOR 14
INCHING 15
SET-UP 16
CYCLING 17
AIR IN SYSTEM 17
MAINTENANCE
GENERAL 20
MAINTENANCE AND INSPECTION 20
INSPECTION
DAILY INSPECTION 24
SAMPLE ROUTINE LOG 24
PERIODIC INSPECTION 26
SAMPLE PERIODIC LOG 26
RELIEF VALVE SERVICE
MANIFOLD ASSEMBLY 32
M6P HYDRAULIC CIRCUIT 33
M6P HYDRAULIC CIRCUIT COMPONENTS 34
POSITIVE STOP ASSEMBLY 35
SAFETY PROCEDURES
SAFETY PROCEDURES CHECKLIST 38
TROUBLESHOOTING
BASIC TROUBLESHOOTING 40

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INTRODUCTION

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MANUAL SCOPE
This manual is intended as a reference when installing and preparing MULTIPRESS
equipment for operation, and for normal maintenance and equipment repair.
SERVICE POLICY
The simplicity of MULTIPRESS equipment, the unitized construction of its major
components, and observance of the instructions in this manual assure ease of
servicing by the user.
All eld service requested by the user and rendered by our factory
representatives will be charged at the established rate per day plus expenses.
MULTIPRESS equipment may be sent to our factory for inspection and service
only upon receipt of a purchase order for such service.
Current user requirements to be specied at time of order.
MULTIPRESS EQUIPMENT WARRANTY
The Seller warrants to the Buyer that on the date of shipment, the Goods shall be
in substantial conformity with the specications therefore and free from material
defects in workmanship or material subject to the condition that Seller receive
notice of a claim hereunder of shipment of Goods within six (6) months on labor,
one (1) year for MULTIPRESS manufactured Parts, (Purchased Component Parts
have original manufacturer’s warranty).
This is the sole warranty of the Seller and all other warranties whether express or
implied or written or oral are superseded hereby.
SAFETY
It is suggested for the user to be familiar with the current revision of ANSI B11.2,
"American National Standard for Machine Tools - Hydraulic Power Presses -
Safety Requirements for Construction, Care, and Use", for personal safety of the
press operator.

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WARNING AND CAUTION TAGS
Please observe the Caution, Warning, and Note tags on the press (reproduced
below) and in this manual.

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(B) STROKE
GG
(D)
DRAIN
3/8 NPT WATER CONN.
FOR OPTIONAL COOLING
COIL IF ORDERED
(H) ( I )
(K)
(D)
(A) DAYLIGHT
(C)
DEPTH
THROAT
(G)
MOTOR START/STOP
TONNAGE CONTROL
UP STOP
4X ø 9/16 THRU
DUAL OPTO TOUCH
SELECTOR SWITCH
PROX. SW
QUALITY CONTROL
PROX. SW.
(M) APPROX.
(L)
(J)
PRESS BED
HH
FF
.31 THRU ALL
3/8-16 UNC THRU ALL
(E)
EE 4X
(F)
DD
RAM END
BANJO
CC
BB
AA
.75
M6P MODELS M6P-5P* M6P-6 M6P-8 M6P-8P* M6P-12 M6P-15 M6P-20
MAX TONNAGE 5 6 8 8 12 15 20
DAYLIGHT, IN 18 18 18 18 18 18 18
STROKE, IN 12 12 12 12 12 12 12
ADVANCE SPEED, IPM 600 430 440 585 420 420 216
PRESS SPEED, IPM 235 210 165 140 165 165 106
RETURN SPEED, IPM 390 415 270 190 270 270 208
PUMP 4.5 4.5 6 4.5 9 9 9
MOTOR, HP @ 1800 RPM 5 5 5 5 7.5 10 10
BORE DIAMETER, IN 2.5 2.5 3.25 3.25 4 4 5
ROD DIAMETER, IN 1.75 1.75 2 2 2.5 2.5 3.5
POSITIVE STOP ROD DIAMETER, IN 1 - - 1.375 - - -
MAXIMUM PRESSSURE, PSI 2425 2445 1929 2349 1910 2387 2038
MINIMUM PRESSURE, PSI 489 489 386 470 382 477 408
RESERVOIR CAPACITY, GAL 16 16 16 16 23 23 23
APPROX. SHIPPING WEIGHT, LBS 1100 1050 1075 1121 1425 1450 2200
SPECIFICATIONS
P* = POSITIVE STOP CYLINDER ASSEMBLY
Figure 1 - Specications

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SPECIFICATIONS CONT.
MODEL A B C D E F G H I J K L M
M6P-6 18 12 6.5 6 12.5 14 8.5 8.5 24.5 8.75 35.5 13.25 53
M6P-8 18 12 6.5 6 12.5 14 8.5 8.5 24.5 8.75 35.5 13.25 53
M6P-12/15 18 12 7.5 7 14.5 17 10.5 9 30.5 11.75 42 16.25 54.13
M6P-20 18 12 9.5 7 16.5 20 11.5 9.5 32.5 12.75 45 19.25 56.63
MODEL AA BB CC DD EE FF GG HH
M6P-6 1.75 0.4375 1/4-20 7/8-9 8 4 3 6
M6P-8 2.0 0.4375 1/4-20 7/8-9 8 4 3 6
M6P-12/15 2.5 0.4375 1/4-20 7/8-9 10 5 3 6
M6P-20 3.5 0.375 3/8-16 1/14 12 6 4 8
2 & 4 POST GUIDED TOOL PLATE 4 POST
MODEL A B C D E F G H I J K
M6P-6/8 8 18 6 12 3 6 1.5 7.875 15.75 2.375 4.7
M6P-12/15 10 21 6 12 3 6 1.5 9.125 18.25 3.625 7.25
M6P-20 12 22 17 14 4 8 1.5 19.625 19.25 4.250 8.5
Figure 2 - Guided Tool Plate

INSTALLATION

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INSTALLATION INSTRUCTIONS
After removing the press from the shipping crate, stand the press upright near
the area where it will be anchored. Care should be taken to avoid twisting
or dropping the press during unpacking and transportation to the area of
operation.
ELECTRIC
Your standard press is wired to be connected to current user requirements as
specied when ordered. Connection of press to the users’ power source should
be accomplished by qualied personnel.
RECOMMENDED OIL SPECIFICATIONS
The warranty for MULTIPRESS equipment applies only when the proper hydraulic
uid has been used, and the oil contamination level is equal to, or better than
NAS...1638...CLASS NO. 8 OR BETTER. NO PARTICLES OVER 200 MICRON. “New”
oil as received, is not clean. Oil must be ltered via a 10 micron (or better) lter
before lling the reservoir. A lter cart is recommended.
Certain basic physical and chemical properties are necessary for proper
operation of MULTIPRESS. The following basic properties should be presented
to the uid supplier for their recommendation of a product for use in this
MULTIPRESS.
VISCOSITY @ 100°F - 300 SUS ±20 SUS
VISCOSITY INDEX - 90 OR HIGHER
RUST & OXIDATION INHIBITORS - YES
ANTI-FOAM ADDITIVE - YES
SPECIFIC GRAVITY .882 - .887 @ 60F/ 60F (API Gravity 29-31)
It is suggested that the uid supplier provide the user with certication that their
product meets the above requirements.

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FILLING THE OIL RESERVOIR
CLEANLINESS is the most important requisite in proper maintenance of the
hydraulic equipment. Of the few maintenance difculties encountered in the
operation of oil hydraulic equipment, many of them are directly traceable to
dirt or foreign matter In the oil.
EXTREME CARE should be exercised in maintaining a clean supply of oil in the
reservoir and the hydraulic system of your MULTIPRESS equipment at all times.
Make certain that no lint, dirt, abrasive scale, or other foreign materials enter
the hydraulic system. Trouble-free operation over a long period of time may be
obtained from the press by taking these precautions with the oil in the press. See
MULTIPRESS EQUIPMENT WARRANTY on Page 6.
The oil reservoir is lled through the oil ller cap, which is located on top of the
reservoir. Remove ller cap and ll the reservoir with any clean oil meeting our
recommended oil specications on Page 10. Fill the reservoir to within 1” of the
top of the reservoir, or to the high mark on the oil level gauge if provided.
CONTAMINANTS ARE FOUND IN NEW OIL SO A FILTER CART SHOULD BE EMPLOYED
TO TRANSFER OIL INTO RESERVOIR.

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SEQUENCE OF
OPERATION

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STARTING THE PUMP AND MOTOR
IMPORTANT: Prior to start-up:
1. Start and stop the electric motor in order to check proper rotation. There are
arrows clearly marked on the motor indicating the correct rotation. If this is
incorrect, check the wiring to the motor leads.
2. Lower the setting of the RELIEF VALVE by loosening the LOCKNUT and
then turning KNOB counterclockwise until loose but not removed. See the
PRESSURE ADJUSTMENT plate on the front of press.

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INCHING
Set the selector switch to JOG DOWN. Simultaneously actuate and maintain
actuation of both CYCLE START buttons to the desired position of the ram.
Release of either button allows the ram to stop. Set the selector switch to JOG
UP. Actuation of the dual push buttons allows the ram to move up.

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SET-UP
JOG the press to your desired lower stop position allowing ram to exert full
pressure against a set up block or workpiece.
Adjust the pressure by loosening the relief valve LOCKNUT and turning the
relief valve KNOB on front or side of press (clockwise increases pressure,
counterclockwise decreases pressure). Set the selector switch and JOG the ram
to required depth. Set the lower proximity or limit switch (2PRS) (if provided) to
that point. This adjustment allows you to select where the ram will reverse. JOG
the ram to your upper stop position. Set the upper proximity switch (1PRS) at that
position.

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CYCLING
Simultaneously actuate and maintain actuation of both CYCLE START buttons.
The ram extends until the lower proximity switch (2PRS) (if provided) no longer
senses the RAM GUIDE BAR, and reverses or the press contacts the work,
pressures up, and reverses (pressure reversal). Release of the CYCLE START
buttons before lower proximity switch (2PRS) is made, retracts the ram to its
upper stop position.
AIR IN SYSTEM
It is not unusual for air to be entrapped in the cylinder, lines, or controls during
initial start up procedures. Operate with the main relief adjustment at low setting
until erratic action or noise disappears. It may also be necessary to “crack” a
pressure line slightly to allow the air to escape. Re-tighten, and then proceed
normally.

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MAINTENANCE