Atlas™ Manual 15T and 25T Hydraulic Press
23
access to the bleed screw (
6
). (The bolster simply lifts clear of the
piston. There may be some suction due to a thin film of oil on the
bolster and piston contact faces). Loosen, but do not remove this bleed
screw and take a piece of work (e.g. a block of metal) and place it on
the piston (
4
), but do not obscure the bleed screw (
6
). Press the work
in the usual way. As pressure tries to build up in the system, any
trapped air in the piston will start to bubble out from the open oil bleed
screw (
6
). Keep on pumping until the oil flows clearly, without bubbling.
Retighten the bleed screw (
6
) and wipe away any expelled oil. Now
release the pressure from the system (open the pressure release
handle (
30
)) and remove the work from the press. Replace the lower
pressing face bolster (
5
) onto the piston (
4
).
The piston pressing side of the press has now been primed and
purged of air.
Fault: Piston Does Not Return When Pressure is
Released
Cause 1:
Foreign matter has become lodged between the
piston (4) and the cylinder block (2).
Remedy:
It will be necessary to remove the piston and clean or
replace any damaged parts. The procedure to do this is
found in the
Atlas™ Manual Hydraulic Press
Servicing
Guide
.
Cause 2:
The piston has been pumped beyond the warning red
ring causing damage to the return mechanism.
Remedy:
It will be necessary to remove the piston and clean or
replace any damaged parts. The procedure to do this is
found in the
Atlas™ Manual Hydraulic Press
Servicing
Guide
.
Summary of Contents for Atlas 15T
Page 1: ...Atlas Manual 15Ton 15T and 25Ton 25T Hydraulic Press User Manual 2I 15011 Issue 13...
Page 2: ......
Page 28: ...User Manual 28 Fig 15 Side View of Manual Hydraulic Press 1 25 27 28 31 30 69 33 34 31 32 26...
Page 33: ...Atlas Manual 15T and 25T Hydraulic Press 33 Notes...
Page 34: ...User Manual 34 Notes...