1 0991 497 EN - 24.03.2017
1.01
ENG
3010
¾”
V
ALVE
M
ANUAL
I
NSTALLATION
,
U
SE AND
M
AINTENANCE
12 / 16
4
MAINTENANCE AND FAULT ANALYSIS
4.1
PROGRAMMED MAINTENANCE
For a correct and safe lift use, it is necessary to make a preventive programmed maintenance, following a fixed
plan.
To define the periodical maintenance frequency, you should consider more events, particularly :
-
Number of travel per year
-
Travelling and stopping periods
-
Age and condition of the lift
-
Site and type of the building in which the lift travel
-
Passengers and goods demand
-
Inside and outside working condition (climate, vandalism, etc.)
In the next table, parts are shared in groups and for each group is shown the type of check and its frequency
recommended. You can find the detailed instructions to perform the operational checks, inside the maintenance
schedules, in the following pages
Please, note that all checks are applicable only if the part is really installed.
4.2
PERIODICAL MAINTENANCE AND CHECKS TABLE
Operation checks
Recommended maximal Frequency
I
NSTALLATION
MONTH
YEARS
Valve gaskets seal
6
Oil level check up
6
Characteristics of the oil
6
Motor protection operation
6
Filters
1
Pressure check
6
Pressure gauge shut off (6)
6
Pressure test (static pressure x2)
6
Ball valve seal
6
Labels, signs and schemes
6
Overall check-up
5
4.3
MAINTENANCE OPERATIONS
What to do:
Valve gaskets seals
-
At the end of installation, and during check-ups, verify the gasket seals, in the following way: with the oil at
room temperature close the ball valve (S) and open the pressure gauge shut off (RUB). Check that the
pressure gauge reading on pressure gauge should not drop more than 4 bar in 5 minutes.
Oil level check-up.
-
With the elevator at the highest floor, check, using dipstick or level indicator, that the oil level is above the
minimum level and (if the motor is immersed the motor should be fully covered in oil).
Oil properties.
-
Visually check the appearance of the oil, it should not have changed. This operation should be performed
after leaving the elevator stopped a few hours.
Motor protection functionality
-
Disconnect one terminal of the thermistors, and check that the motor protection working properly.
Filter
-
Check the main filter mounted inside the VRP spool and clean it if is necessary.
Pressures check
-
Check static and dynamic (working) pressure at the end of installation. Check regularly that all values of
these parameters remain unchanged.
