Espa TECNO, Instruction Manual, Page: 13 / 48

13
EN
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