Operations & maintenance manual – ASTRA evo (DDE)
ARGALAIR 2020 | Rev. 6
43
STEP 11
Only for models 60-100-160 remove the air connection (pos.51) and it’s O-ring (pos..31) from the pneumatic exchanger
(pos.2).
PNEUMATIC EXCHANGER
WARNING:
The pneumatic exchanger must not be opened to prevent incorrect reassembly, that
may cause the pump malfunctioning.
OPERATION RESERVED FOR ARGAL PERSONNEL OR AUTHORIZED BY ARGAL!
INSPECTION
Check for the presence of:
•
excessive abrasion on the thermoplastic parts;
•
clogged materials and/or agglomerates caused by pumped fluid;
•
deformations and/or surface lesions on the diaphragms;
•
deformations and/or breakages on the valve seats.
Replace the parts: broken, cracked, deformed. Reopen all the clogged ducts and eliminate any chemical
agglomerates. Clean all the surfaces before reassembly, particularly the OR gaskets seats (risk of leakage).
CLEANING AND REPLACING THE DIAPHRAGMS
•
control and internal cleaning every 500.000 cycles;
•
diaphragm check every 5.000.000 cycles;
•
diaphragm replacement every 15.000.000 cycles.
3.12 PUMP ASSEMBLY
To reassemble the pump, follow the instructions given in this paragraph.
Summary of Contents for ASTRA Evo DDE 030
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