Maintenance And Service - WEBTEC CTR J1939 Manual Del Usuario

Maintenance and service

Replacement of burst discs. This procedure should only be completed by suitably trained personnel.
Burst disc replacement diagram - Note. DHM tester shown - CTR has same procedure
• Place the first disc inside the valve
• Replace the spacer
• Place the second disc on top of the spacer
• Screw in the disc holder, tighten to 54 Nm (40 lb.ft)
• Unscrew the load valve fully.
Calibration
Recommended period between calibrations is 12 months. Maximum period between calibrations is 36 months.
Unit accuracy may be affected by operating cycle, fluid condition or extended periods between recalibrations.
Accessories
A range wide range of accessories are available from Webtec or your local distributor. These include pressure
transducers (MPT range), and cables.
The loading valve contains replaceable safety discs, which
relieve the pressure at approximately 7 bar (100 psi) over the
maximum pressure, by-passing the oil internally.
Replacing Safety Discs
• Disconnect the unit from the hydraulic circuit and remove
any fittings from the exit port
• Locate the new discs - the unit is shipped with spare discs
located in the block
• Screw the load valve fully shut - (clockwise)
• Unscrew the safety disc holder from the valve.
• Remove the disc spacer and ruptured discs from the valve
and disc holder
• Carefully shape the two discs by pressing them by hand
between the disc holder and spacer
11