Beyeler HYDRULIC PRESS

BEYELER MACHINES S. A.  INSTRUCTIONS 
HYDRULIC PRESS

Customer

WITH COMPENSATION FOR DFFLECTION

main motor
motor díp-poínt stops
motor power-backstop
optíonnel wahlweise optional
 motorised backstop
optíonnel wahlweise optíonal
 slípping clutch
clutch for bottom stops
profondeur
torsion shaft
MAINTENANCE
guídes
chain
D. torsíon shaft bearíng frame
 E. torsíon shaft bearing beam
 timer of pressure
optíonnel wahlweise optíonol
3 pressure-swítch cut-out
 star-delta sígnal lomp
button for outomatíc cycle
6 pressure gauge ísolator button
7 lockable swítch
8 foot-pedal plug
 foldíng s eed regulotor
optíonnel wahlweíse optional
10 pressure gauge
11 pressure adjustment
12 approach-speed regulator
13 top posítíon limíter
14 press Ьeam
 15 díp-poínt adjustment buttons
 16 position-adjustment buttons
17 stгoke-depth indicotor
18 backstop índícator
19 compressed oir connector
38 brake switch
 LUBRICATION:
 A. guídes
 cylinder machines
.

Pneumatic and Hydraulic Faults Troubleshooting Guide

Pneumatic Faults

Work Energy Abnormal

Check Air Pressure: Ensure that the air pressure is between 5 to 6 atm (70 - 85 psi).

Inspect Electro-Pneumatic Valves: Verify the functioning of electro-pneumatic valves for blocked passageways or burnt-out solenoids.

Hydraulic Faults

Loss of Pressure in Circuit

Adjust Relief Valve: Raise and lower the relief valve setting, then observe the effect on the pressure gauge.

Check Pilot Orifice: Ensure that the pilot orifice of the relief valve is not obstructed.

Inspect Piping for Leaks: Check the submerged piping for leaks and rectify if necessary.

Check Dump Valve: For each cylinder, check the dump valve for a jammed piston. Press the foot pedal and sense with your hand at outlet R whether oil is expelled via this outlet. Dismantle the valve and ensure the piston slides freely. Replace the spring if broken.

Examine Main Piston Seals: Check the main piston seals for damage.

Cycle Does Not Take Place or Is Abnormal

Remove Valve Block Cover: Take off the cover from the valve block.

Check Pressure Switch: Ensure that the pressure switch provides an impulse after the build-up of pressure. If necessary, adjust the throttle. The duration of the pressure peak can be adjusted by the timing relay situated in the electrical control box.

Inspect Valve Spool Movement: Remove screw and insert a rod approximately 3 mm in diameter into the tapping. Operate the foot pedal and feel whether the valve spool moves easily (approx. 15 mm). In normal conditions, the spool should be centered.

Check Centering Springs: Verify the centering springs.

Beam Descends Too Rapidly When Motor Is Off

Check Valve Spool Centering: Ensure that the valve spool is centered.

Inspect Reservoir and Piping: Partially empty the reservoir until the piping is visible. Raise the beam to the top position and switch off the motor. Check piping and return cylinders for leakage.

Note: A descent speed of 10 mm/min is permissible.

Malfunctioning of the Relief Valve

Check Pilot Orifice: Ensure that the pilot orifice is not obstructed.

Adjust Pressure Setting: Raise the pressure setting of the valve to avoid chatter and subsequent damage to the electrical contacts.

Motorised backstop



P