Prebena MOUNMOUNTAINE 1450, Original Instructions Manual

17

EN

drain tap (fig. 26) under the tank. Take care if there is compressed air 

inside the cylinder, and water could flow out with considerable force. 

Recommended pressure: 1 ÷ 2 bar max. Condensate of compressors 

that are oil lubricated must not be drained into the sewer or dispersed 

in the environment as it contains oil.

OIL CHANGES – TOPPING UP WITH OIL 

The  compressor  is  filled  with  oil  Z200.40.  We  recommend  a  full 

change of oil in the pumping element within the first 100 hours of duty. 

Unscrew the oil drain plug on the housing cover, allow all the oil to flow 

out, and re-screw the plug (fig. 27 - 28).Pour oil into the upper hole 

of the housing cover (fig. 29 - 30) until it reaches the level indicated 

on the stick (fig. 9) or indicator (fig. 11) Pour oil into the upper hole of 

the head (fig. 30) in belt assisted units designed for topping up in that 

area. Once a week check oil level of the pumping element (fig. 11) 

and see if it needs topping up. For operation at ambient temperature 

in the range -5°C to +40°C, use synthetic oil Z200.30. The advantage 

of this oil is that is does not lose its characteristics either in winter or 

summer. Do not drain used oil into the sewer or dispose of it in the 

environment.

OBSERVE THIS TABLE FOR OIL CHANGES

       TYPE OF OIL                                           HOURS OF DUTY

PREBENA Compressor oil Z200.40.......................................500

 PREBENA Synthetic oil for compressors Z200.30.................400

WHAT TO DO IF SMALL MALFUNCTIONS OCCUR 

Loss of air in valve under pressure switch

This trouble depends on poor tightness of the check valve – take the 

following action (fig. 31):

– Discharge all pressure from the tank

-  Unscrew the hexagon-head of the valve (A)

-  Carefully clean both the rubber disk (B) and its seat.

-  Refit all parts accurately.

Air losses

These can be caused by poor tightness of a union – check all unions, 

wetting them with soapy water.

Compressor turns but does not load

Coaxial compressors: (fig. 32)

- this may be due to failure of the valves (C1 – C2) or of a seal (B1 – 

B2): replace the damaged part. 

Pulley drive compressors: (fig. 33)

- this may be due to failure of the valves (F1 - F2) or of a seal (D1 – 

D2): replace the damaged part.

- Check if there is too much condensate water inside the tank.

Compressor no starting

If the compressor has trouble starting, check the following :

- Does mains power match that of the data-plate? (fig. 14)

- Are power cable extensions of adequate diameter or length?

- Is the work environment too cold? (under 0°C)

- For series VX/AB: was the thermal-breaker tripped? (fig. 20) 

- Is there oil in the housing to ensure lubrication? (fig. 11) 

- Is power supplied to the electrical line (sockets well connected, 

thermal- breaker, fuses in good condition).

Compressor not stopping

- If the compressor does not stop when maximum pressure is 

reached, the tank safety valve comes into operation. To repair the 

valve, contact your nearest service centre.

IMPORTANT

- Do not on any account unscrew any connection while the tank is

pressurised always check if the tank is pressure free. 

- Do not drill holes, weld or purposely deform the compressed air 

tank. 

- Do not do any jobs on the compressor unless you have disconnected 

the power plug. 

- Temperature in operating ambient: 0°C +35°C. 

- Do not aim jets of water or inflammable liquids on the compressor. 

- Do not place inflammable objects near the compressor. 

- During down-times, turn the pressure switch to position “0” (OFF). 

- Never aim the air jet at people or animals (fig. 34) 

- Do not transport the compressor while the tank is pressurised. 

- Be careful with regard to some parts of the compressor such as the

head and delivery tubes, as they can reach high temperatures. Do not 

touch these parts to avoid burns.(fig. 18 - 19) 

- Transport the compressor, lifting or pulling it with the appropriate 

grips or handles (fig. 4 - 6) 

- Keep children and animals well away from the machine operating 

area.

- If using the compressor for painting: 

a) Do not work in closed environments or near to naked flames;

b) Make sure there is adequate exchange of air at the place of work; 

c) Protect your nose and mouth with an appropriate mask. (fig. 35)

- If the electrical cable or plug are damaged, do not use the compressor 

and contact an authorised service centre to replace the faulty element 

with an original spare part.

- If the compressor is located on a shelf or on a top above floor height, 

it must be secured to prevent it falling while in operation. 

- Do not put objects or your hands inside the protective grilles to avoid 

injury to yourself or damaging the compressor. (fig. 36) 

- Do not use the compressor as a blunt object toward things or 

animals, to avoid serious damage. 

- When you have finished using the compressor, always remove the 

plug from the power socket.

ELECTRO-COMPRESSOR 

Maximum operating pressure 10.5 bar 

Minimum operating pressure 10 bar 

N.B. Two-stage compressors can be supplied on request for use up 

to 14 bar. In this case: 

Maximum operating pressure 14.75 bar 

Minimum operating pressure 14 bar 

NOTE: 

For the European market, the compressor tanks are 

manufactured  to  meet  Directive  CE2009/105.  For  the  European 

market, the compressors are manufactured to meet Directive 

CE2006/42. 

Acoustic pressure measured free-field at a distance of 4m: ±3dB(A) 

at maximum operating pressure. (tab. 3)

Mod.                             CV/kW            dB(A)

TWINMAX 420 

       3 – 2.2 

   74

TWINSTAR 470           3 – 2.25              76

MOUNTAINE 670        5.5 – 4.1             75

ORKAN 670                 5.5 – 4.1             75

TWINSTAR 670           5.5 – 4.1             75

TWINSTAR 860-15      5.5 - 4.1              75

TWINSTAR 970            5.5-7.5               76

MOUNTAINE 1450       10 – 7.5              78

The level of acoustic pressure can increase from 1 to 10 dB(A) 

according to the place in which the compressor is installed.

INSTRUCTION FOR USE AND MAINTENANCE OF THE 

PRESSURE VESSEL

The pressure vessel is intended to be used for storage of compressed 

air or nitrogen. It has been designed for mainly static applications. 

No account has been taken of loads due to wind, earthquakes or to 

reaction moments or forces caused by the connections or piping.

To ensure operation of compressed air vessel under safe