7
5-3 High pressure hoses
①
Hose installation
WARNING
Install hoses, leaving something in reserve, because high-pressure hoses expand and
contract more or less when full pressure is applied. Be careful that the hoses do not rub
against other solid materials.
Never allow the hoses to kink, twist, curl or bend so tightly that oil flow within hoses are
blocked or restricted. Do not clamp the hoses, causing troubles.
②
Hose handling
DANGER
Never drop heavy things against the hoses, causing bursting of hoses or serious accident.
Do not subject the hoses to any potential hazard (fire, extreme heat or cold, heavy impact
or sharp surfaces), which might rupture or weaken the hoses. Never pull hoses to move or
lift equipment connected with hoses.
Should a hose ever burst or ruptured, immediately stop operating the pump before
attempting to remedy the situation. Never attempt to grasp a leaking hose under
pressure with your hands. The force of the escaping hydraulic fluid could cause serious
and permanent injury.
5-4 Quick couplers
①
Connections
Make sure that all couplers are connected properly. Incomplete coupling connections
might cause partial or complete blockage of oil flow, resulting in trouble of hydraulic
system.
②
Handling
WARNING
Stop operating of the pump with a hose and coupler, but without a cylinder. The damaged
coupler will cause accident. Do not disconnect the coupler sets, which are under pressure.
