ENG
1.00
1 0991 491
EN
-
23.08.2016
41 / 45
NGV-EK
V
ALVE
M
ANUAL
I
NSTALLATION
,U
SE AND
M
AINTENANCE
Ball valve seal
6
Labels, signs and schemes
6
Overall check-up
5
6.3
MAINTENANCE SCHEDULES
What to do: (see image)
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 (R/S) and open the pressure
gauge shut off (6). 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 (F) or level indicator (L), that
the oil level is above the minimum level and
(the motor should be fully covered in oil).
VSMA
VMD
PT
MAN
R/S
S1
SM
S3
S2
7
5
1
6
ISP
ML
VBP
PAM
Oil Characteristics
Check visually that no change are occurred in the oil conditions. Perform this check after leaving the system
down for a few hours. Once every year it should be better to discharge a little amount of oil from cap (J)
and to check if it’s clean. If oil is not clean keep on discharging oil until you see to flow clean oil.
Motor protection functionality
-
Disconnect one terminal of the thermistors, and check that the motor
protection working properly.
Filter
-
Check the main filter (FIL) mounted inside the silencer 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
Pressure gauge shut off (6)
-
Close the ball valve (R/S), open the pressure gauge shut off (6) and fully discharge the pressure using
electro-valve (VMD). Close the pressure gauge shut off (6) open the ball valve (R/S) and check that the
level shown on pressure gauge is zero.
Pressure test (static pressure x2)
•
This test assures you about the integrity of parts under pressure, including those which can not be
visually checked.
•
To correctly carry out this test follow these instructions and make reference to the images:
-
Close the pressure gauge valve (6).
-
Close the ball valve (R/S). Remove the pressure gauge (MAN).
-
Connect the hand pump (M) in place of the pressure gauge (G1/4) as
shown in the image on the right side
-
Open the pressure gauge valve (6).
-
Open the ball valve (R/S).
-
Open the hand pump valve (N) for about 1 minute.
-
Close the hand pump valve (N).
-
Close the ball valve (R/S).
-
Operate the hand pump (M) until the required pressure is reached,
checking it on hand pump pressure gauge (O).
-
At the end of the test, discharge the pressure to zero by pressing the
push-button on (VMD) (see image up).
-
Close the pressure gauge shut off (6).