24
POAD230 - NLFREN - v1.0 - 16032017
EN
TOOLS
7 Maintenance
Safety instructions
• The dispensing system requires a minimal amount of maintenance.
• Before carrying out any maintenance work, disconnect the dispensing system from any electrical and hydraulic power
source.
• During maintenance, the use of personal protective equipment is compulsory.
•
All maintenance must be performed by qualified personnel. Tampering can lead to performance degradation, danger to
persons and/or property and may result in the warranty being voided.
Measures to be taken
• Whenever there is a risk of frost, empty the circuit and the pump, taking care to place the pump in an environment where
the temperature is no lower than 0 °C/32 °F.
• Check that the labels and plates found on the dispensing system do not deteriorate or become detached over time.
7.1 Maintenance work
Once a week:
• Check that the pipe connections are not loose to prevent any leaks.
•
Check and keep the filter installed on the suction line clean.
Once a month:
• Check the pump body and keep it clean and free of any impurities.
• Check that the electrical supply cables are in good conditions.
8 Troubleshooting
Problem
Possible cause
Solution
The motor is not turning
Lack of electric power
Check the electrical connections and the
safety systems
Rotor jammed
Check for possible damage or obstruction of
the rotating components
Motor problems
Contact the service department of your
supplier
The motor turns slowly when
starting
Low voltage in the electric power line
Bring the voltage back within the anticipated
limit
Low level in the suction tank
Refill the tank
Foot valve blocked
Clean and/or replace the valve
Filter clogged
Clean the filter
Excessive suction pressure
Lower the pump with respect to the level of
the tank or increase the cross-section of the
tubing
High loss of head in the delivery circuit
(working with the by-pass open)
Use shorter tubing or of greater diameter
By-pass valve blocked
Contact the service department of your
supplier
Air entering the pump or the suction tubing
Check the seals of the connections
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