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Operating Instructions − Power Packs



Voith Turbo H + L Hydraulic | Page 6101-0 | Revision 0609 en

1. General

The operational saety o the hydraulicsystem and the durability o the built-in

elements is principally dependent upon

careul maintenance. Usage o the ol-

lowing standards will make your hydrau-lic system a sae control unit with long

operational durability.�

2. Start up

Pipes must be cleaned careully beore

mounting. Pipes and screw connections

must be selected in accordance to ma-

ximum pressure and ow. The mounting

and connections must be checked with

the hydraulic plan. Please consult assem-

bly instructions available rom the hydrau-

lic tube and ftting manuacturer.

2.2 Oil flling

Power packs are delivered without oil.

The pressurizing medium (hydraulic oil)

must be fltered flled in over the desi-gnated fller plug. Hydraulic oil is typically

delivered dirty! We recommend to use a

drum pump with integrated flter (5...10

µm). Please select the oil rom the atta-ched oil recommendation chart.

2.3 Electric motor

Connect the electric motor according to

the technical specifcation. Beore che-

cking the electric motor rotation direction

(short turn-on, direction arrow on the

motor or pump bell housing) unscrew the

adjusting spindle rom the accumulator

charging valve and the drain cock (red

star grip). With this adjustment the hy-

draulic system must work un-pressurised

or approximately 5 minutes to de-aerate.

At the same time it is necessary that the

pump delivers oil. Due to unavourable

positioning or because o long storage

it maybe possible that the pump will not

de-aerate. In this case try de-aeration by

disconnecting a consumer pipe and rou-

ting it back to tank. The oil will be pumped

without pressure back to the tank.

2.1 Pipes to consumer




2.5 Pressure adjusting (accumulator operation)

a) Turn in drain cock (red star grip)

b) Turn in slowly the accumulator

charging valve adjusting spindle and

observe pressure gauge. I the working

pressure pB

is reached, the spindle must

be fxed with the locknut and the protec-

ting cap can be mounted.

2.4 Accumulator charging valve - unction description

The system working pressure pB

is adju-

stable only at the accumulator-chargingvalve. The adjusted pressure is described

in the hydraulic plan.

The accumulator charging valve has a

fxed hysteresis o 5, 10, 15 and 0% o

the working pressure pB. When the top

adjusted pressure is reached (accumu-

lator ull) the valve switches the pump

to unpressured circulation. I the pres-

sure is alling to the selected pressure

dierence (because o the accumulatorevacuation to the consumer) the accumu-

lator charging valve switches so that the

pump flls the accumulator to the adjusted

pressure.

It is possible at delivery, that the accumu-

lator-charging valve isn‘t adjusted in line

with the hydraulic plan. Then the adju-

sting must be made during start up.

protecting cap,

adjusting spindle or working pressure pB

drain cock

accumulator saety block

pressure gauge

saety valve

accumulator charging valve

accumulator connection

accumulator charging valve with option

electric accumulator discharging

1

8

7

6

5

4

3

2

1

2

3

4 5

6

7

8

Example: control unit SLE 00




2.6 Accumulator

The accumulator oil flling is made auto-

matically by the accumulator-chargingvalve. The manual saety discharging is

done by unscrewing the drain cock (red

star knob). Beore re-operation the drain

cock must be completely turned in. I

this is not the case the system will have

decreased perormance and it will heat

up. Users o hydraulic systems with ac-

cumulators must take due care o saety,including valid specifcation. At accumula-

tor charging operation please don‘t adjust

„partial pressure“ (slowly turn in or out o

the accumulator charging valve spindle)

this will destroy the accumulator.

3. System maintenancePlease apply a maintenance book which

notes the work carried out during the ma-

chine lie, with oil and flter changes and

any service issues.

Maintenance and service are allowed

only on a depressurized installation. Ater

electric motor switching please activate

the equipment or accumulator deprus-

surizing (Drain cock, discharge valve,...)

and check the system pressure on the

pressure gauge.

3.1 Oil level control

Beore starting the oil level must be

checked every day. The oil level indicator

is positioned on the ront o the tank. The

oil level must be positioned between the

marks min. and max. Refll only oil o the

same specifcation.

The frst oil change is approximately 0

working hours ater frst start up. Then in

an interval o 000 working hours or ater

a regular examination o the oil. At all oil

changes it is necessary to clean the oil

tank inside. That is possible by removing

the cleanout cover or tank lid.

3.2 Oil change

3.3 Filter elements

The flter elements are generally not reus-

able (exception: wire mesh elements) and

they must be checked and i necessary

changed at the oil change interval. The

contamination indicator should also be

checked regularly to see i elements are

clogged and replaced i required.




Pipe work and fttings must be checked

or leakage, i it is necessary the pipeft-

ting must be tightened. Hosepipes are

wear parts. They must be checked at

regular time intervals and replaced i they

are cracked or damaged.

3.6 Temperature

The oil temperature must be checked

regularly. An unreasonable rise in the

temperature show increased wear, or that

there are switching errors in the control

elements, or an open drain cock on sy-

stems with accumulator charging valves

(please consult .6).

3.8 Circuit system, hydraulic connections

3.7 Heat exchanger

Possible source o errors at systems

with heat exchanger are urring or closed

cooling water valve on the oil / water heatexchanger, or deective / disconnected

ventilator, dirty radiator on oil / air heat

exchanger. The oil temperature should

not exceed 60° C.

The accumulator gas pre-charge must be

regularly checked, latest at oil change.We recommend you obtain a charge and

test device because only an accurately

pre-charged accumulator can guarantee

correct unction o the system. The flling

or measurement o the gas pre-chargecan only be made on accumulators with

zero pressure on the oil side.

3.4 Accumulators

3.5 Operation pressure

The set pressure must be checked in

regular time intervals. Every pressure

dierence will change the perormance o

the machine.

Use only original spare parts to suit the

components ftted. To guarantee the

saety o the system we recommend you

exchange complete Voith components

or send them to Voith or inspection and

repair.

4. Spare parts



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