TECNOTER LQMI Series, Manual, Page: 12 / 38

2 TECHNICAL DESCRIPTION MAGNETS
2.4 DESCRIPTION OF THE HYDRAULIC MAGNETS
2.4.2 TECHNICAL DATA HYDRAULIC MAGNETS
T A B . 2.2
LQMI35 LQMI45 LQMI55 LQMI60 LQMI70
WEIGHT HYDRAULIC MAGNET
KG
LBS 750
1650
910
2000
1050
2310 1300
2850
1500
3300
WEIGHT HYDRAULIC MAGNET T VERSION
KG
LBS
900
1980
1190
2620
1380
3050
1545
3400
2050
4500
MINIMUM FLOW RATE REQUIRED (*)
L/1’
Gallon
L/1’
Gallon
45
12
50
13
200
53
70
18
200
53
80
21
200
53
100
26
200
53
MAXIMUM FLOW RATE (***)
200
53
MINIMUM PRESSURE REQUIRED (**)
BAR
PSI
180
2610
180
2610
180
2610
180
2610
180
2610
MAX RETURN PRESSURE
BAR
PSI
20
290
20
290
20
290
20
290
20
290
MAXIMUM PRESSURE
BAR
PSI
240
3500
240
3500
240
3500
240
3500
240
3500
APPROXIMATE HYDRAULIC MOTOR-GENERATOR REVOLUTIONS
REV PER
MINUTE
2350-
2400
2480-
2500
2490-
2510
2500-
2540
2580-
2620
THREE-PHASE VOLTAGE TO THE TERMINALS OF THE GENERATOR VOLTS 180 180 180 180 180
POWER DELIVERED FROM THE GENERATOR KW 3.5 4.5 5.5 6 7
DIAMETER MAGNETIC PLATE
mm
INCHES 860
34
950
38
1050
42
1130
45
1250
50
THEORETICAL RESISTANCE MAGNETIC PLATE AT 20° Ώ
13.8 10.7 8.8 8 6.9
THEORETICAL VOLTAGE TO THE MAGNETIC PLATE Vcc
220 220 220 220 220
THEORETICAL CURRENT INTENSITY TO THE MAGNETIC PLATE Amp
15.9 20.5 25 27.2 31.8
THEORETICAL POWER DELIVERED FROM THE PLATE KW
3.5 4.5 5.5 6 7
CHAIN MAXIMUM LIFTABLE LOAD
KG
SHORT TON 7,000
7.710 9,000
9.920 9,000
9.920 9,000
9.920 9,000
9.920
CARRIER WEIGHT
TON
10 – 14 14 – 17 19 – 23 20 – 25 26 - 32
ATTENTION!
For the operation of the magnet, it is advisable to use an independent hydraulic circuit.
This results in:
1. Less energy consumed (lower oil flow)
2. Less heating of the machine’s oil
3. Reduced chance of unwanted material fall because of sudden drop of oil flow.
This can happen when another hydraulic service is used at the same time as the magnet, in a common circuit.
(*) Minimum flow rate required = minimum flow rate required at any time. If the flow rate falls below this value even for a short while, there will be a loss of load.
For this reason we suggest to set the carrier for a flow higher than the minimum to compensate flow fluctuations. If the carrier has reduced flow fluctuations we
suggest to set the pump at 20-30 liters per minute over the minimum value. If the carrier has large flow fluctuations we suggest 70-80 liters per minute over the
minimum value. Typical pump setting for an lqmi45 with medium flow fluctuations is 200bar and 100 liters per minute.
(**) This is the value the pump must grant in correspondence with the nominal flow. Therefore the setting value of the excavator pressure must be calibrated to a higher value
than that required, normally around an additional 20 bar, to compensate for any losses for heating.
(***) Maximum flow rate that must never be exceeded
ATTENTION!
Using the magnet at maximum capacity value for long periods may result in over-heating.
Division: Tecnoter srl Hyd. Magnet LQMI Ver. T Page 12/38 Rev: 1.0a_En –
15/07/2018