English / A-21

HYDRAULIC OIL

Unlatch and swing open the Oil Reservoir / Fuel tank Cover (20). Remove the reservoir cap to check the oil level. The hydraulic oil level should be half way up the screen ﬁlter inside the ﬁller neck of the reservoir. Add SAE 10W30 motor oil if it is below this level. Change the oil if major contamination from a mechanical failure occurs.

ENGINE OIL – GASOLINE (PETROL) & LPG

Check the engine oil level when the machine is parked on a level surface and the engine is cool. Change the engine oil after the ﬁrst 35 hours of operation and every 150 hours after that. Use any SF or SG rated oil meeting API speciﬁcations and suited to seasonal temperatures. Refer to the Engine System section for oil capacities and additional engine speciﬁcations. Replace the oil ﬁlter with every oil change.

TEMPERATURE RANGE	OIL WEIGHT
Above 60° F (15° C)	SAE 10W-30
Below 60° F (15° C)	SAE 5W-30

ENGINE OIL - DIESEL

Check the engine oil level when the machine is parked on a level surface and the engine is cool. Change the engine oil after the ﬁrst 35 hours of operation and every 150 hours after that. Use CF, CF-4 or CG-4 oil meeting API speciﬁcations and suited temperatures (*important reference the oil/fuel type note below for further diesel oil recommendations). Refer to the Engine System section for oil capacities and additional engine speciﬁcations. Replace the oil ﬁlter with every oil change.

TEMPERATURE RANGE	OIL WEIGHT
Above 77 °F (25 °C)	SAE 30 or 10W-30
32 °F to 77 °F (0 °C to 25 °C)	SAE 20 or 10W-30
Below 32 °F (0 °C)	SAE 10W or 10W-30

* Diesel Lubricating Oil Note:

With the emission control now in effect, the CF-4 and CG-4 lubricating oils have been developed for use of a low-sulfur fuel on-road vehicle engines. When an off-road vehicle engine runs on a high-sulfur fuel, it is advisable to employ the CF, CD or CE lubricating oil with a high total base number. If the CF-4 or CG-4 lubricating oil is used with a high-sulfur fuel, change the lubricating oil at shorter intervals.

• Lubricating oil recommended when a low-sulfur or high-sulfur fuel is employed.

Lubricating	Fuel	Low sulfur
		Low sulfur	High sulfur	Remarks
		(0.5 % ≥)	High sulfur	Remarks
Oil class		(0.5 % ≥)
Oil class

CF		O	O	TBN ≥ 10
CF-4		O	X
CG-4		O	X
O : Recommendable	X : Not recommendable

ENGINE COOLANT

Open the Engine Compartment Cover (1) and observe the coolant level in the Coolant Recovery Tank (22). If the level is low, add a mixture of half water and half automotive type anti-freeze.

CAUTION!

Do not remove the Radiator Cap (23) when the engine is hot.

ENGINE AIR FILTER

Check the Engine Air Filter Service Indicator (24) before each use of the machine. Do not service the air ﬁlter unless the red ﬂag is visible in the service indicator. NOTE: After cleaning or replacing the engine air ﬁlter, the service indicator can be reset by pressing the end of the indicator.

CAUTION!

When servicing the engine air ﬁlter elements, use extreme care to prevent loose dust from entering the engine. Dust can severely damage the engine.

The engine air ﬁlter contains a Primary (outer) and a Safety (inner) ﬁlter element. The Primary Element may be cleaned twice before being replaced. The Safety Element should be replaced every third time that the Primary Filter Element is replaced. Never attempt to clean the Inner Safety Element.

To clean the Primary Filter Element, unsnap the 2 clips at the end of the air ﬁlter and remove the end housing. Pull the primary element out. Clean the element with compressed air (maximum pressure 100 psi) or wash it with water (maximum pressure 40 psi). DO NOT put the element back into the canister until it is completely dry.

revised 5/08

FORM NO. 56041656 - Exterra™ / SR 1900 - A-21

SR 1900 specifications

The Nilfisk-ALTO SR 1900 is a powerful and versatile scrubber dryer designed to meet the cleaning needs of various commercial environments. Known for its efficiency, durability, and advanced features, the SR 1900 is ideal for maintaining cleanliness in areas such as shopping malls, warehouses, and large retail spaces.

One of the key features of the SR 1900 is its robust cleaning performance. Equipped with a high-capacity dual brush system, the machine efficiently removes dirt and grime from all types of flooring surfaces. The adjustable brush pressure allows operators to customize the cleaning intensity based on the type of surface being cleaned, ensuring optimal results without damaging the floor.

The machine's ergonomic design is another standout characteristic. The user-friendly controls and intuitive layout allow for easy operation, even for those who are new to using scrubber dryers. The compact design ensures excellent maneuverability around tight corners and obstacles, enhancing productivity during cleaning tasks.

A notable technological advancement in the SR 1900 is its innovative water management system. This system regulates water usage, ensuring that the right amount of water is applied to the floor throughout the cleaning process. This not only conserves water but also reduces drying times, allowing foot traffic to resume quicker. Additionally, the SR 1900 features an adjustable squeegee that effectively collects dirty water, minimizing the risk of slips and falls.

The machine operates quietly, making it suitable for use in noise-sensitive environments. The low sound level means that cleaning can take place during business hours without disturbing customers or employees.

The SR 1900 is also designed with ease of maintenance in mind. Its removable tanks and accessible components simplify servicing, reducing downtime and ensuring that the machine remains in optimal working condition.

Overall, the Nilfisk-ALTO SR 1900 is an excellent choice for those looking for a reliable and efficient scrubber dryer. With its robust cleaning capabilities, ergonomic design, innovative technologies, and easy maintenance features, it stands out as a top-tier solution for cleaning professionals striving for high standards of cleanliness in demanding environments.