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8. PROBLEMS AND SOLUTIONS 

 
 
 

A diagnostics table is provided  below that indicates the main anomalies, the probable causes and the possible solutions. 

If you were not able to solve the problem after consulting the diagnostics table, do not try to find the fault by disassembling 

machine parts but contact the Dropsa technical office and report the discovered anomalies, with a detailed description. 

 

PROBLEM 

POSSIBLE CAUSE 

REMEDIAL ACTION 

The electric pump is not 

delivering any lubricant. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The electric motor is not functioning. 

 

 

 

 

 

 

 

 

 

The tank is empty. 

 

 

 

The pump is not triggered. Causes of the pump’s 

failure to trigger: 

 

The motor is turning in an inverted direction 

(clockwise); 

 

The motor is turning in the right direction but the 

stirring paddle is not turning; 

 

Presence of air bubbles in the lubricant. 

 

The pressure adjustment valve (bypass) has been 

calibrated at too low a value 

Presence of dirt in the non-return valve. 

Check the connection between motor and electric supply 

line. 

 

Check the motor winding. 

 

Check that the connection plates for the motor terminal 

box are positioned in accordance with the supply voltage. 

 

Fill the tank. 

N.B.: If the tank was emptied without the electric signal 

for reaching the minimum level being given, the minimum 

level contact must be checked. 

 

Remove the cover from the tank and check that the 

stirring paddle is turning anticlockwise and that the 

lubricant is moving; if not invert two of the three motor 

phases. 

See above. 

 

 

 

Remove the pump delivery pipe and drain off the 

lubricant until the air bubbles have been eliminated. 

The pump will not go 

under pressure. 

 

Possible dirt on the cone of the pump stop valve 

 

Clean the cone and the pumping element stop valve 

housing, draining off the lubricant. 

 

Replace the gasket (code 3190489). 

No signal indicating 

minimum level when 

there is no lubricant in 

the tank.  

Incorrect adjustment of minimum level. 

Check the correct functioning of the level probe in the 

following way: 

 

Dismantle the minimum level unit and recalibrate the 

capacitive probe. 

Selection of minimum 

level, with lubricant 

below the minimum and 

pump working. 

Incorrect adjustment of minimum level. 

The light on the control panel is still on: check the electric 

connection and, if necessary, replace the capacitive 

probe. 

 

9. MAINTENANCE PROCEDURE 

 

The pump was designed and built in order to minimise maintenance requirements. 

To simplify maintenance, it is recommended to install it in an easy to reach position. 

 

Periodically check the pipe joints to detect any leaks. Furthermore, always keep the pump clean to be able to quickly detect 

any leaks or defects. 

 

Check if the loading filter is clean after every 2000 hours of operation. 

The machine does not require any special equipment for any control and/or maintenance activity. It is recommended to use 

tools and personal protective devices suitable for use (gloves) and that are in good condition according to current regulations to 

prevent damage to people or machine parts. 

 

 

 

 

In the case of doubts and/or problems that cannot be solved, do not try to discover the reason by disassembling machine parts, 

but contact the DROPSA S.p.A technical office. 

10. DISPOSAL 

During maintenance or disposal of the machine care should be taken to properly dispose of environmentally sensitive items such 

as oils or other lubricants. Refer to local regulations in force in your area. When disposing of this unit, it is important to ensure 

that the identification label and all the other relative documents are also destroyed. 

 

ATTENTION

: The unit may only be opened and repaired by authorised Dropsa personnel. 

 

 

ATTENTION

Make sure that the electric and hydraulic power supplies are disconnected before carrying out any 

maintenance work.

 

 

 

Содержание 2451011

Страница 1: ...NENTS 6 UNPACKING AND INSTALLING 7 OPERATING INSTRUCTIONS 8 TROUBLESHOOTING 9 MAINTENANCE PROCEDURES 10 DISPOSAL 11 ORDERING INFORMATION 12 DIMENSIONS 13 HANDLING AND TRANSPORTATION 14 PRECAUTIONS 15...

Страница 2: ...type of distribution can be altered This construction technique is essentially based on the following modules Electric motor Pump body with integrated reducer Two pumping elements Reservoir Valves and...

Страница 3: ...Kg reservoir 100 Kg ELECTRICAL CHARACTERISTICS Motor power supply 230 400V 5 50Hz 280 480V 5 60Hz Rated motor power 0 75 Kw Motor degree of protection IP 55 Minimum level Laser grease floating Oil Ma...

Страница 4: ...sente di garantire un ottima tenuta del sistema alle alte pressioni di funzionamento pressione max di 400 bar Pumping elements are mounted on the pump casing without the need to disconnect the line pi...

Страница 5: ...vel reserve and the maximum level which allows the automatic refilling of the tank to be halted For connections see paragraph 7 3 4 5 1 3 3 Maximum visual floating level for oil grease The phase that...

Страница 6: ...ds or in a particularly aggressive or explosive inflammable environment if not previously prepared for that purpose by the supplier Use safety gloves or glasses as specified in the safety sheet for th...

Страница 7: ...e for calibrating the laser probe 24V cc Out 4 20mA 2 NO 4 thresholds The laser probe possesses a representative and programming display mounted on board It is possible to operate in analogue mode wit...

Страница 8: ...3190489 No signal indicating minimum level when there is no lubricant in the tank Incorrect adjustment of minimum level Check the correct functioning of the level probe in the following way Dismantle...

Страница 9: ...74 56 UL and NEMA standard 230 460V 60 Hz On request 80 Pneumatic motor 3301539 95 Inverter NOT PRESENT 0 4 3 Valve Electromagnetic 24 V DC 0083550 1 4 2 Electromagnetic inverter 24 V DC 0083560 2 4 2...

Страница 10: ...TS Spare part description Variant P No Motors 3Ph 0 75 Kw IE3 230 400Y 50Hz 280 480Y 60Hz 3301081 3Ph UL and CSA 0 75 Kw IE3 230 400Y 50Hz 280 480Y 60Hz 3301528 Reducer i 40 3301608 Maximum mechanical...

Страница 11: ...12 DIMENSIONS 30 Kg 100 Kg mm in mm in A 533 5 21 983 38 7 B 1084 42 67 1534 60 39 C 984 38 74 1434 56 45 D 313 12 32 413 16 25...

Страница 12: ...lectrical power supply and making sure that no one can reconnect it during the operation All the installed equipment electric and electronic tanks and basic structures must be connected to the ground...

Страница 13: ...splash consequently this operation must be carried out using appropriate individual protective devices contact with oil see instructions for using appropriate individual protective devices DPI Use of...

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