Holmatro HTS 550 A Manual página 31

WARNING
Always make sure that the pressure relief valve is in the "neutral" position, before you
disconnect hydraulic hose(s) from the pump.
• Disconnect the dust caps from each other.
• Turn the retainer ring on the female coupler anti-clockwise to unsecure the lock ring.
• Disconnect the quick couplers by pushing the lock ring on the female coupler backwards and the
male coupler will be released.
• Clean the couplers and the dust caps.
• Replace the dust caps on the female and male couplers.
5.4 Relief the pressure in unconnected hoses or tools
5.4.1 General
Temperature differences can cause overpressure in unconnected hoses and tools. This overpressure
can make it impossible to connect the parts. You can use the pressure relief tool to remove this
overpressure. This accessory is available for all Holmatro hose systems and is supplied by default with
every pump.
Note
We recommend you keep more than one of these tools on hand.
5.4.2 High-Flow system
Refer to Fig. 11.
• Turn the knob of the pressure relief tool counterclockwise to make room for the coupler.
• Press the pressure relief tool on to the coupler of the hose or tool and screw the tool and the coupler
together.
• Wrap a cloth around the pressure relief tool, leave the knob free to operate.
WARNING
Make sure the cloth covers the oil openings, because a cloud of oil may appear without a
cloth.
• Turn the knob clockwise to release the pressure. Some oil will be released.
• Turn the knob counterclockwise and remove the pressure relief tool from the coupler.
5.4.3 Quick-Lock system
Refer to Fig. 12.
• Turn the knob of the pressure relief tool counterclockwise to make room for the coupler.
• Press the pressure relief tool on to the coupler of the hose or tool.
• Wrap a cloth around the pressure relief tool, leave the knob free to operate.
WARNING
Make sure the cloth covers the oil openings, because a cloud of oil may appear without a
cloth.
• Turn the knob clockwise to release the pressure. Some oil will be released.
• Turn the knob counterclockwise and remove the pressure relief tool from the coupler.
HTS/HTW/FTW 916.000.901_000
EN
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