GMV GL MRL-MC Manuel D'entretien page 38

III. Group : Car frame and pulley frame
What to do:
III.a Safety gear device
- Check the lever, the roller and the switch are not wear, check their movements are regular and easy
and, for safety, check all bolts are well tights.
- Perform the safety gear test and check its correct working, according to the safety gear installation
instructions.
III.b Rope fixings on car frame
- Check and clean tie roads and connecting terminal ropes. Make sure that rope fixings clamps are well
tights.
III.c Shoes
- Check preservation, wear and free from dust of the car guide shoes, car frame and pulley-frame.
- Check guide shoes and if it's necessary, take up slack
Devices Cleaning
- Check all elements are well oiled and free in their movements
III.d Wear and pulley greasing
- Check pivot and pulley bearing don't make noise or abnormal vibrations, otherwise clean and grease them.
- Check groove of the races are not worn or deformed by ropes passing.
- Check the race alignment and profile.
· Replace or restore all the components not correctly working.
IV. Group : Power unit and jack
What to do: (see Fig. 1.3.1)
IV.a 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 (B)
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.
IV.b 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).
IV.c 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.
IV.d Motor protection functionality
- Disconnect one terminal of the thermistors, and check that the motor
protection working properly.
IV.e Filter
- Check the main filter (FIL) mounted inside the silencer and clean it if is
necessary.
IV.f Pressures check
- Check static and dynamic (working) pressure at the end of installation. Check regularly that all values of
these parameters remain unchanged.
IV.g Pressure gauge shut off (6)
- Close the ball valve (B), 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 (B) and check that the
level shown on pressure gauge is zero.
IV.h Pressure test (static pressure x2)
- This test assures you about the integrity of parts under pressure, including those which can not be
visually checked.
Maintenance Manual
Maintenance Operations
Pag. 4 di 6
1
Doc. n° 10991032
Rev.1.0.11 - 07.06.2006
Fig. 1.3.1- Pump unit
Scheme
EN
5