6.3.1b
6.3.1a
6.3.1b
Page 47 of 68
INDUSTRIAL PUMPS
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debem.com
Chapter 6 - Routine Maintenance
Translation of Original Instructions - BOXER rev. 2021
6.3 TIGHTNESS CHECK
This operation is reserved for trained and qualified Mechanical Servicemen, equipped with suitable Per-
sonal Protective Equipment (PPE); see the Technical and Safety Data Sheets of the treated liquid.
CAUTION
: risk of contact with toxic or corrosive fluids.
6.3.1
TIGHTNESS CHECK
The tightness of the pump and product ducts must be checked after the first 2 hours of operation and then
periodically every 500,000 cycles of operation.
CAUTION
: risk of product leakage.
The tightness check ensures a correct seal of the product circuit; in the event of leaks or product leaks,
it is always necessary to carefully check that the pump and the internal sealing components are intact
before commissioning.
Safety requirements for the operation:
• Pump stopped with air supply disconnected and interlocked and residual pressure discharged;
• Closed suction and delivery valves;
• Pump with the external parts cleaned/washed;
• Suction and delivery pump and circuits at MAX ambient temperature 40°C.
Proceed as follows to check the tightness of the pump:
6.3.1a
Using a suitable torque wrench, check the tightness of the pump screws respecting the torques indicated in the
TIGHTENING TORQUE TABLE on page 48
.
CAUTION
:
risk of stress corrosion cracking phenomena and sudden breakages.
Excessive tightening (especially on plastic pumps), can cause dangerous tensions on some components
and sudden breakages that cannot be attributed to construction defects.
6.3.1b
Check the tightness of the connection fittings to the pump and the tightness of the hose clamps of the product
ducts.
6.3.1c
Remove the tools used from the pump.
The tightness check of the pump and product ducts is completed.
