Page 7
3.6 Dispensing system overview
The FV 250.2 is designed for use
with a liquid rinse aid, and either
solid or liquid detergents.
Units equipped with optional liquid
internal detergent and rinse aid
pumps have two tubes exiting the
machine at the lower rear. These
tubes can simply be attached to
detergent and rinse aid containers.
See Figure 3-6.
Units that are NOT equipped with
the internal pumps have:
•
A blue rinse aid line exiting the
machine at the lower rear.
•
Two dummy plugs covering
holes in the back of the wash
tank that can be used for de-
tergent injection. The plugs are
accessed by removable panels
on the sides of the machine.
Either plug can be used.
•
A hole in the bottom of the wash
tank for the installation of a de-
tergent concentration probe.
A dispensing system terminal block
(shown in Figure 3-6) provides
contacts for two
line voltage
relays. These relays, when closed,
provide a “window” for external
pump systems to activate.
•
The rinse aid pump relay closes
for approximately 16.5 seconds
whenever the booster tank
refills (once per cycle).
•
The detergent pump relay
closes whenever the wash
pump is in operation.
Activation of the pumps can be
controlled as follows:
•
Solid detergent systems should
use a detergent concentration
probe installed in the wash tank
to activate the external pump.
A dummy plug at the bottom of
the wash tank provides an
installation location for the probe.
S
ECTION
3 - I
NSTALLATION
Figure 3-6: Chemical connections
Liquid rinse
additive
injection
(blue)
Liquid detergent
injection (clear) - only
present on machines
with internal chemical
pump option
Chemical
dispenser
terminal block
Dummy plugs for
detergent
injection
(use either side)
Access panel for
external chemical
dispenser injection
(use either side)
Dummy plug
for detergent
concentration
probe
Main electrical
supply terminal
block
•
Liquid detergent systems can use EITHER a
detergent concentration probe, OR a timer system.
A detergent concentration probe is HIGHLY
RECOMMENDED.
•
Liquid rinse aid systems should be controlled using
a timer system.
