27
For instance: TWN 5636 (1000 RPM), LW 2020 (1450 RPM), HWD 4040 (3400 RPM).
The presence of letter K, preceded by a hyphen, means that the pump (LW-K, ZW-K) is equipped
with an already built-in pressure limiting/adjusting valve (for instance: LWR-K 2020, ZW-K
4022): This rule cannot be applied to the AX models, because they are all already equipped with
a built-in pressure limiting/adjusting valve.
The numbers of the model initials make it possible to determine the maximum flow rate and
pressure.
With the first two figures (if the number is made up of four figures) or with the first three figures
(if the number if made up of five figures) you can establish the maximum flow rate according to
the following table:
Maximum flow rate in l/min. = first two (or three) figures x 0,378
Maximum flow rate in US gpm = first two (or three) figures : 10
For instance: TW 10522 (105 x 0.378 = 39.7 l/min.), LW 2015 (20:10 = 2 US gpm).
With the last two figures you can determine the maximum pressure according to the following
table:
Maximum pressure in bar= last two figures x 6,9
Maximum pressure in psi=last two figures x 100
For instance: TW 10522 (22 x 6.9 = 151.8 bar), LW 2015 (15x100 = 1500 psi).
2.1 IDENTIFICATION OF COMPONENTS
1
S u c t i o n c o n n e c t o r
11
Support for motor flange
2
Pump head
12
Pump shaft
3
Suction valve plug
13
Oil discharge plug
4
Connector for pressure gauge
14
Detergent suction connector
5
Delivery connector
15
Pressure adjusting knob
6
Delivery valve plug
16
Detergent adjusting knob
7
Identification plate
17
Oil plug without vent
8
Oil plug with vent
18
Pump foot
9
Pump case
19
Connector for safety valve
10
Oil level light
20
Connector for thermal valve
Please refer to figures 1 and 2 at the beginning of the manual
2.2 SAFETY DEVICES
D
CAUTION
v
The machine with the built-in pump must be always equipped with a pressure limiting/adjusting
valve.
v
If the machine with the built-in pump is equipped with a safety valve, in case it is activated
very often, immediately interrupt the use of the machine with the built-in pump and have it
checked by a
Specialised Engineer
.
