HYDAC International OLF 5/4 Series, Инструкция по эксплуатации и техническому обслуживанию

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OLF 5 with Temperature sensor
HYDAC Filtertechnik GmbH
en
Page 14
BeWa OLF-5 LL-ET_3321664a en.doc 2006-10-06
The nominal size of the connected hoses/piping must be at least as large
as the inlet/outlet port sizes of the pump.
•
If no liquid is pumped by the unit, the pump should be primed. This can be done at
the suction connection when the motor is switched off.
OLF-5/4.
For operating viscosities of < 200 mm²/s, the max. flow rate is
not achieved until after approx. 10 minutes when the pump is not primed.
6 Maintenance
Adjustment and maintenance work is to be carried out within the period stipulated.
6.1 Maintenance Measures
Replacement parts have to satisfy the manufacturer's technical requirements. This is
guaranteed for all replacement parts procured from HYDAC Filtertechnik GmbH.
Clean all parts of the disassembled filter. Check if they are damaged or worn out and, if
necessary, replace them.
When replacing the filter element extreme care is to be taken that no dirt or other foreign
matter enters the hydraulic system.
6.2 Intervals for Changing Filter Elements
The filter is equipped with a gauge for monitoring the filter element, the gauge indicating any
pressure drop in the filter housing upstream of the filter element.
The filter element is considered to be contaminated when the differential pressure indicator
reaches 2 bar (the needle gauge enters the red area), in which case the filter element must
be replaced.
If electrical clogging indicators are installed, the right time for changing the filter element is
indicated by an electrical signal.
6.2.1 Changing the Filter Element (DIMICRON
®
):
•
A:
Switch the unit off and relieve the filter of pressure by carefully opening the drain
screw (wrench size: 6 mm) on the bottom of the filter housing (do not unscrew the
drain screw completely). Loosen the tensioning clamp on the filter housing and
carefully remove the filter housing.
•
When the clogging indicator shows "green" this means that the pressure in the filter
unit has been relieved. Watch out for exiting hydraulic fluid.
•
B:
Make sure that no further oil from the tubing of the hydraulic system enters the
filter unit and that nobody can switch the unit on again during maintenance work.
•
Empty the filter housing completely through the drain screw (volume: approx. 2 liters).