6
•
Move the selector switch (9) to the “down” position.
•
Move the selector switch (5) to the “pump on” position.
•
Use the pressure regulator (6) to adjust the pressure for the use. This can be checked with the pressure gauge (12). Using
the pressure gauge (4), ensure that the air pressure does not exceed 7 bar.
•
In the event that the pump fails to engage or operates irregularly, try increasing the cylinders pressure using the pressure
regulator (10).
•
At the end of use, move the pump (5) and cylinders (9) selector switch to the “off” position.
•
Release the residual pressure in the sealant/grease circuit by opening the pressure vent valve (11B) on the manifold valve.
Once the pressure has been released, close the vent valve (11B).
6.3.4 Barrel replacement
•
Before replacing the barrel, ensure that the pump (5) and cylinders (9) selector switch is in the “off” position.
•
Move the raising air flow control selector switch (7) to the “on” position.
•
Move the cylinders control selector switch (9) to the “up” position.
•
If raising the plate proves to be difficult, increase the raising air flow using the regulator (8).
•
Raise the pump (1) until the plate comes out of the barrel.
•
Move the selector switch (9) to the “off” position.
•
Replace the barrel.
7. 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 pump runs but is
not delivering
The pneumatic pump does not work.
The reservoir is empty
The pump does not engage. Causes of the
pump failing to engage:
•
Air trapped between follower plate and
sealant
•
Air is in the circuit
•
Not enough pressure of follower plate
onto sealant
Check the pneumatic connection between the pump
and the supply line.
Ensure that there is line pressure.
Check that the manifold valve tap is open.
Replace the barrel.
Lower the follower plate until it is in contact with the
surface of the sealant/grease
Activate the pump until completely bleeding out the
air pockets
Increase the cylinders pressure
The pump will not
generate enough
pressure to inject
sealant
Pump pressure regulator is set too low
Sealant is frozen
Problem with the valve
Increase the pressure (up to a max of 7 bar)
Replace sealant with a low temperature grade
Refer to the valve operations manual
ATTENTION
: The unit may only be opened and repaired by authorised Dropsa personnel.
