SATA 97822, Руководство пользователя, Страница: 11 / 52

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EN DE RU KO PT JA ES 97822
11
required.
4
）
Check the jack frequently. If the top end of the piston rod, transverse shafts, universal joints, rollers, casters or other rotating parts
lack lubrication
（
i.e. grease
）
, please add grease immediately.
5
）
Replace the hydraulic oil at least once every 3 years. The hydraulic oil replacement procedure is as follows:
a
）
Lower the jack to the lowest level and release and remove the oil filler screw.
b
）
Overturn the jack and drain out all the hydraulic oil
（
hydraulic oil shall be disposed of according to the local laws and
regulations
）
.
c
）
Place the jack upwards, align it with the oil filler and slowly fill qualified hydraulic oil until it is 0.6 cm from the oil filler.
d
）
Rotate the handle counterclockwise and open the oil return valve.
e
）
Rotate the handle clockwise, lift and press it, and repeat this operation several times quickly to discharge air from the oil circuit.
f
）
Recheck the oil level and refill the oil if necessary.
g
）
Tighten the oil filler screw.
h
）
Wipe it off with a piece of clean cloth, then place the jack in a safe place.
V. Common faults and troubleshooting :
Fault
symptoms
The jack fails to rise under
rated load
√ √ √ √
The tray lowers automatically
under load
√ √
The jack fails to rise
√ √
The rolling handle feels soft
and weak
√ √
The handle tilts automatically
under load
√
Leakage at the oil filler
√
Possible cause
（
s
）
1. Check whether
the oil return valve
is completely
closed;
2. There may be
air in the oil circuit
1. The oil circuit
may be blocked;
2. The oil return
valve is not
completely closed
The amount of
hydraulic oil may
be insufficient
There may be air
in the oil circuit
The
amount of
hydraulic
oil may be
excessive