5 Installation at Site
23 of 82
Amarex
2573.820/02-EN
5.2.3 Checking the direction of rotation
DANGER
Pump set running dry
Explosion hazard!
▷ Check the direction of rotation of explosion-proof pump sets outside
potentially explosive atmospheres.
WARNING
Hands and/or foreign objects in the pump casing
Risk of injuries, damage to the pump!
▷ Never insert your hands or any other objects into the pump.
▷ Before connecting the pump set, check that the inside of the pump is free from
any foreign objects.
▷ Never hold the pump set in your hands while checking the direction of rotation.
CAUTION
Pump set running dry
Increased vibrations!
Damage to mechanical seals and bearings!
▷ Never operate the pump set for more than 60seconds without the fluid
handled.
ü The pump set is connected to the power supply.
1. Start the pump set and stop it again immediately to determine the motor's
direction of rotation.
2. Check the direction of rotation.
Impeller rotation must be anti-clockwise, seen from the pump mouth end. (The
direction of rotation is marked by an arrow on the pump casing.)
Fig.3: Checking the direction of rotation
3. If it is running in the wrong direction of rotation, check the electrical connection
of the pump set and the control system if applicable.
4. Disconnect the pump set from the power supply and make sure it cannot be
switched on unintentionally.
5.3 Installing the pump set
Always observe the general arrangement drawing/outline drawing when installing
the pump set.
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