Quick Tips For Remedying Faults; Low Level Pumping - Pentair UV3 Instruction Manual

ENGLISH

Low level pumping

Flooded surfaces can be drained down to a residual water level
of a few mm without using any special accessories. To do so,
the foot strainer must be levered off with a screwdriver. In the
case of pumps with an attached control, the float switch must
be locked in the ON position. It is not possible therefore in low
level pumping to operate the pump in switching mode.
To make the pump operate, the drainage hose must be emptied
before each pumping run and there must be a minimum water
level of 40 mm available.
CAUTION!
For safety reasons, mobile operation is only allowed with a foot
strainer.
If a hose is used as a pressure line, care must be taken to en-
sure that for every pumping operation the hose is completely
empty before the pump is submersed. Any residual liquid would
obstruct the ventilation of the pump housing and therefore
also hinder the pumping operation. For the same reason, the
pump would not operate if it was switched on before being sub-
mersed.
CLEANING
WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that no one
else can reconnect them to the power supply.
WARNING!
Check the mains cable for signs of mechanical and chemical
damage. Damaged or kinked cables must be replaced by the
manufacturer.
NOTICE! If the water contains high levels of iron or lime, insuf-
ficient cleaning can result in irreparable damage to the seal
and thus also to the pump motor in the long term.
Consequently, the pump must be cleaned at regular intervals
according to the hardness of the water.
Tightening torque M for A2 screw materials
A
M 5 M = 5 Nm, Amtec M = 2,5 Nm
A A
8
QUICK TIPS FOR REMEDYING
FAULTS
Pump does not work
• Check mains current (do not use a pin gauge)
• Fuse faulty = may be too weak (please refer to Electrical Con-
nection)
• Mains supply cable damaged = repair to be carried out by
manufacturer only
Pump runs but does not pump
• Empty the pressure pipe or hose to allow the non-return
valve to open and the air to escape from the pump housing.
Remove the vent plug.
Impeller blocked
• Solids and fibrous matter have become lodged in the pump
housing = clean
Decreased pumping performance
• Foot strainer obstructed = clean
• Pressure pipe obstructed = clean
• Rotor worn out = repair to be carried out by the manufacturer
JUNG PUMPEN GmbH - Industriestr. 4-6
33803 Steinhagen, Germany
401.15-20.08
EN 12050-2:2001
Lifting plant for faecal-free wastewater DN 32
UV3 (JP50248)
UV3 S (JP50249)
UV3 S (JP50312)
UV3 SF (JP50313)
Collecting and automatically lifting faecal-free
waste water above the backflow level in buildings
and sites
REACTION TO FIRE
WATERTIGHTNESS
EFFECTIVENESS (LIFTING EFFECT
- Pumping of solids
- Pipe connections
- Ventilation
- Minimum flow velocity
- Minimum free passage of the plant
- Minimum useful volume
MECHANICAL RESISTANCE
- Load bearing capacity and structural
stability of collection tank for use
- Structural stability of collection tank
for use inside buildings
NOISE LEVEL
DURABILITY
- of structural stability
- of lifting effectiveness
- of mechanical resistance
DANGEROUS SUBSTANCES
0197
20
NPD
Pass
Pass
Pass
NPD
Pass
Pass
NPD
NPD
NPD
70 dB(A)
NPD
Pass
NPD
NPD