Regular Inspections And Maintenance; Oil Level In The Reservoir; Temperature And Possible Leakage Of The Pumps, Motors And Valves; Condition Of Piping And Hoses - Vexve Hydrox HCU Remote Installation, Operation And Maintenance Instructions

2.5. Regular inspections and
maintenance

2.5.1. Oil level in the reservoir

The oil level should be high enough to operate
all the actuators from open to close position and
vice-versa, if problems are suspected due to
lack of pressure or other problems, the oil level
may be low.
2.5.2. Temperature and possible
leakage of the pumps, motors and
valves
The temperature of the pump, motor and valves
is checked by hand contact. If the target is so
hot that the hand cannot be held for longer than
1-2 seconds, temperature is too high. When
the temperature is too high, pumps must be
stopped. The reason for high temperature needs
to be investigated and the fault repaired, or the
component replaced before restarting the pump.

2.5.3. Condition of piping and hoses

The piping must be monitored for pipe and fit-
ting tightness. If the attachment of the pipes has
loosened, they must be tightened. If tightening
does not securely fasten the pipe, the clamp
must be replaced. The fitting must be tightened
if the pipe fitting leaks. If tightening does not
stop the leak, the fitting and possibly the pipe
connected to it must be replaced.
When replacing the fitting and the pipe, they
must be cleaned from the inside to be com-
pletely free of all impurities, including burrs prior
to insertion. Replacement must be carried out
with absolute purity.
8
When observing the hose, attention should be
paid to the tightness of the attachment and pos-
sible abrasion.
If the hose attachment has become loose, they
must be tightened immediately.
Hoses must be replaced if the tightening does
not help. If rubbing is detected, it is necessary
to secure them in such a way that they will no
longer be rubbed.
The worst-scratched hoses must be replaced.
Before installing a new hose, it must be cleaned
from the inside until completely clean. Replace-
ment must be carried out with absolute purity.
When changing pipes and hoses, open open-
ings must be sealed with a clean plug. The
plug is only removed as late as possible due
to impurities in the ambient air, which must be
prevented from accessing the open hydraulic
circuit.

2.5.4. Sound of pumps and motors

The sound of pumps and motors is heard
by ear. If the sound intensifies or its tone has
changed, it may be a sign of possible damage
of the component. The pumps must be stopped
immediately, and the damaged component
replaced.
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