8.2.2
Maintenance of power pack
■
8.2.2.1 Make sure the power supply is cut off and pla�orm of parking
hoist
is lowered down to ground before
maintenance.
■
8.2.2.2 Power line, oil hose or other component is to be replaced with the same specifica�ons.
■
8.2.2.3 The whole hydraulic system is to be depressurized completely before opened.
Note:
the life�me of hydraulic system may be affected by environment, human factor or life�me of hydraulic
components. Proper and regular maintenance could lower down probability of malfunc�on.
8.3
Maintenance and servicing of cylinder
Only trained and qualified staff is allowed to do inspec�on, maintenance and service work of cylinder.
8.3.1
Inspec�on of cylinder
Before installa�on and usage of cylinder:
■
8.3.1.1 Check if the actual working pressure and system supply pressure of cylinder is sufficient.
■
8.3.1.2 Check if hydraulic oil, working temperature and cylinder cleanness meet the requirement of sealing.
■
8.3.1.3 Check the piston surface if there is any adhered foreign par�cles or dirt, remove if any.
■
8.3.1.4 Check regularly if any leakage on hydraulic fluid port, piston rod, juncture of bore and piston.
8.3.2
Maintenance of cylinder
■
8.3.2.1 Clean the vent hole quarterly to keep surface of vent hole clean.
■
8.3.2.2 Keep clean hydraulic oil in hydraulic circuit by replace hydraulic oil regularly.
■
8.3.2.3 Inject lubrica�on oil (by injector oiler) through vent hole into lower cavity of cylinder, un�l lubrica�on
oil spills from vent hole when cylinder is at maximum stroke.
■
8.3.2.4 Hydraulic fluid port and vent hole is to be well protected from dust, dirt or par�cles going into inside
of cylinder.
■
8.3.2.5 Low-speed movement or jerky mo�on of rod has to be stopped and checked to avoid more damage.
■
8.3.2.6 Connec�on and load parts are to be checked and lubricated regularly. Loosen, galled, bent, blocked,
cracked or deformed part should be replaced in �me.
■
8.3.2.7 Score mark and scraping of chromium-layer on one side of piston rod surface means serious wear on
one side. It’s necessary to dismantle and inspect the cylinder, and replace worn part(s).
■
8.3.2.8 Check regularly hydraulic fluid port, vent hole and wiper seal at cylinder tube head end, replace the
broken seals if leakage occurs.
31
AL
2525 &
AL
2625
USER MANUAL
