Espa DELTA - Technical Information and Troubleshooting; Possible Faults, Causes and Solutions; Technical Data

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8. POSSIBLE FAULTS, CAUSES AND SOLUTIONS
1) The motor does not start.
2) Motor operates but there is no pressure.
3) Motor over-heating.
4) Pump does not deliver rated capacity.
5) Motor starts and stops automatically.
6) Shaft rotates with difficulty.
9. TECHNICAL DATA
Liquid temperature… ............................. .4ºC - 40ºC
Ambient temperature: ............................. 0ºC - 40ºC
Storage temperature: ........................... -10ºC - 50ºC
Ambient relative humidity, max.: ...................... 95%
Motor class I.
Other data see Figure 2.
1
2
3
4
5
6
POSSIBLE PROBLEM
SOLUTIONS
X
X
Pump blocked
Disconnect it and take it to the official Technical
Service
X
Foot valve clogged
Clean it or replaced by new one
X
X
Total head higher than expected
Verify geometric head and loss of head
X
X
X
Wrong tension
Check that the tension is the same as that on the
name plate
X
X
Water level in well or tank has come
down
Verify suction head
X
Fuse or thermal relay disconnected
Change fuse or thermal relay
X
X
Impellers are worn out
Disconnect pump and take it to your Service
Dealer
X
Foot valve not submerged
Be sure suction pipe is submerged
X
Pump was not primed
Fill pump body with water
X
X
Room not properly aired
Provide good ventilation
X
Air entry
Seal unions and joints properly