Samoa 555 Serie Guía De Servicio Técnico Y Recambios página 13

REPAIR AND MAINTENANCE PROCEDURES
TORQUES NECESSARY FOR THE PROPER FUNCTIONING OF THE PUMP
For proper operation of the pump and to prevent accidents which may
damage equipment and in the worst case, people, you must periodically
review the torques of the diaphragms covers and the DIRECTIONAL
VALVE. In the next table are shown the appropriate torques for this
purpose:
CAUTION!: DO NOT OVERTIGHTEN FASTENERS.
DIAPHRAGM MAINTENANCE
Before any intervention: DISCONNECT AIR SUPPLY OF THE PUMP.
IT IS NOT NECESSARY TO REMOVE THE PUMP FROM THE FLUID LINE.
ANTICIPATE A POSSITE LEAKAGE OF FLUID INSIDE THE PUMP.
INSTALLING THE NEW DIAPHRAGMS - ASSEMBLING PROCEDURE
CAUTION: Follow next procedure to ensure the diaphragms are
correctly installed. If not followed diaphragm bead could be
extruded out of its housing with the resulting damage over the
diaphragm bead and thus possible fluid leaks or premature
diaphragm failure.
CAUTION!
1. Correct assembly of the
diaphragm before the diaphragm
cover assembly.
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
2. Incorrect assembly of the
diaphragm.
Possible damage when
assembling the diaphragm cover.
Diaphragm cover
TORQUES
Directional valve
DP200
Manifolds
REMOVING THE DIAPHRAGM:
1. Close inlet and discharge fluid valves.
2. Drain the fluid inside the pump.
3. Remove the directional valve while being careful not to damage the
seals between air valve and diaphagm.
4. Remove the diaphragm cover screws.
NOTE: To tighten these screws you must use a torque wrench
calibrated to (see torque table in this page).
5. Remove the cover by gently pulling back.
6. Remove the used diaphragms.
NOTE: Be careful to not lose the seals
between valve and diaphragm cover.
1.
PREPARING THE CENTRAL ROD FOR DIAPHRAGM INSTALLATION
Using a soft head hammer displace the central rod out of the body
enough to install the diaphragm without deforming it.
Avoid instally the diaphragm without preparing the central rod in its
proper position. Diaphragm bead could be damaged when installing
diaphragm cover.
SOFT HEAD
EN
132 lbf·in ( 15 N·m)
70 lbf·in ( 8 N·m)
132 lbf·in (15 N·m)
13
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