Troubleshooting; Technical Data - Gardena PTU 3700/4 Instrucciones De Empleo

(6)
4. Open the screw fitting
screw (9) .
The pump drains.
5. Store the pump in a dry, enclosed and frost-free place.
Disposal:
(in accordance with RL2012/19/EC)
The product must not be disposed of to normal household
waste. It must be disposed of in line with local environmental
regulations.
IMPORTANT!
v Dispose of the product through or via your municipal recycling collection
centre.

6. TROUBLESHOOTING

DANGER! Risk of injury!
Injury when the product starts accidentally.
v Disconnect the product from the mains before you trouble-
shoot the product.
To loosen the impeller [ Fig. T1 ]:
An impeller blocked by dirt can be freed again.
v Turn shaft of the impeller
This will loosen the stuck impeller.
To clean the filter [ Fig. T2 ]:
If the pump does not start or stops suddenly during operation, this may
be due to a clogged filter.
1. Loosen the screw connection
2. Unscrew the filter (16) .
(16)
3. Clean the filter under running water.
4. Assemble the filter (16) in reverse order.
Problem Possible Cause
Pump is running, but the Leaky or damaged suction
suction action doesn't take
hose.
place
The pump was not filled with
water.
The liquid escapes over the
hose which is connected to
the delivery side during the
suction action.
Absolutely vacuum­resistant connection is achieved by using
GARDENA Suction Hoses (see 8. ACCESSORIES).
Leaky screw fitting at the
filler neck.
Air cannot escape, since
delivery side is closed or
remaining water is in the
pressure hose.
The waiting time wasn't
observed.
Suction filter or backflow
preventer in the suction hose
clogged.
Too high suction height.
In case of any other difficulties concerning the suction action,
use GARDENA Suction Hoses with Backflow Preventer
(see 8. ACCESSORIES) and fill in the liquid to be pumped
over the filler neck before operation.
Pump does not start, Thermal switch has turned
or stops suddenly during the pump off because of over­
operation heating.
No power supply to the pump.
10
9023-20.960.01.indd 10
(7)
of the filler neck and the water drain
(10) with a screwdriver.
(15)
.
Remedy
v Check suction line for
damage and seal it so it
is airtight.
v Fill the pump
(see 3. OPERATION).
v 1. Fill the pump again
(see 3. OPERATION).
2. When starting operation
hold the pressure hose
approx. 1 m vertically
above the pump, until the
suction action has taken
place.
v Check seal (replace if neces­
sary) and tighten connection
securely (do not use pliers).
v Open shut­off valves
(e. g. nozzle) in the delivery
line, empty the delivery hose
or disconnect it from the
pump during priming.
v Switch on the pump and wait
up to 5 min.
v Clean the filter or the back
flow preventer.
v Reduce suction height.
v Clean the filter.
Observe the max. media
temperature (35 °C).
v Check fuses and electrical
plug connections.
Problem Possible Cause
Pump does not start,
RCD has triggered
or stops suddenly during
(residual current).
operation
Pump is not switched on.
Pump is running but the Suction hose end is not
delivery drops suddenly in water.
Suction filter or backflow
preventer clogged.
Leaks at suction side.
Impeller blocked.
Noise development in the
In the case of strong flows (e. g. open hose end, without connect­
hydraulic area ing device), noise may result in the hydraulic part of the pump.
This is harmless and does not lead to damage of the pump.
The noise can be removed by lightly changing the flow (e. g. light
opening / closing of a connecting device).
Pump switches on and Tank membrane is damaged.
off too often
Pressure in the tank is too low. v Refill the air in the storage
Leakage on the pressure side.
NOTE: For any other malfunctions please contact the GARDENA service
department. Repairs must only be done by GARDENA service departments
or specialist dealers approved by GARDENA.

7. TECHNICAL DATA

Pressure Tank Unit Unit Value
(Art. 9023)
Rated power W 800
Mains voltage
V (AC) 230
Mains frequency
Hz 50
Max. delivery capacity
l/h 3700
Max. pressure / bar / 4.1
max. delivery head
m 41
Max. self-priming suction
m 7
height
Working pressure p(W)
(switch-on to switch-off
bar 1.5 – 2.8
pressure
Permitted internal pressure
bar 6
(delivery side)
Power cable
m 1.5 (H07RN­F)
Weight
kg 13.1
Sound power level L
1)
WA
measured / guaranteed
78 / 82
dB(A)
Uncertainty k 3.58
2)
WA
Max. media temperature
°C 35
Measuring process complying with: RL 2000/14/EU
1)
8. ACCESSORIES
GARDENA Suction Hoses Kink­proof and vacuum­proof, optionally available by the metre
Art. 1720 / 1721 (19 mm (3/4") / 25 mm (1")) without connecting
fittings or in fixed length Art. 1411 / 1418 complete with connecting
fittings.
GARDENA Suction Hose
For connection on the suction side.
Fitting
GARDENA Pump
For connection on the delivery side.
Connection Set
GARDENA Suction Filter
To equip suction hoses with backflow
with backflow preventer preventer sold by the metre.
GARDENA Pump
Recommended for pumping sandy liquids.
Preliminary-Filter
GARDENA Bore Hole For vacuum­resistant connection of the pump
Suction Hose to boreholes or pipe networks. Length 0.5 m.
With 33.3 mm (G1) female thread at both ends.
Remedy
v Disconnect the pump
and contact the GARDENA
Service.
v Push the On / Off switch
to On.
v Submerge the end of the suc­
tion hose deeper in the water.
v Clean the suction filter or
back­flow preventer.
v Eliminate leak.
v Release impeller.
v Let the tank membrane be
replaced by the GARDENA
Service.
tank.
v Eliminate leaks on the
pressure side.
ISO 4871
2)
Art. 1723 / 1724
Art. 1750 / 1752
Art.
1726 / 1727 / 1728
Art. 1730 / 1731
Art. 1729
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