Installing External Chemical Pumps - Meiko FV 40.2 Owner's Installation, Operation And Maintenance Manual

Figure 3-5: Sealing unused chemical tubes (if not using a
3.7 Installing External Chemical Pumps (if so equipped)
IMPORTANT
Some local codes dictate that electrical
connections be made only by a certified
professional.
The machine's dispensing terminal block
includes relays that close during specific times
in the cycle. The closed relays complete a
circuit, creating a "window" that allows
activation of external chemical dispensers.
• The rinse additive relay is closed for 16.5
seconds when the booster tank begins its
fill cycle. A timer in the external system
should be used to regulate the amount of
rinse additive injected per cycle.
• The detergent relay is closed whenever
the wash pump is in operation.
IMPORTANT
It is HIGHLY RECOMMENDED to use a
timer system to control detergent injection,
NOT a detergent concentration probe.
Two pre-plumbed 1/4" ID tubes serve as the
connection points for the chemical supplies.
The CLEAR tube supplies detergent, and the
BLUE tube supplies rinse additive.
To install external chemical dispensers:
1. Check that the pump(s) are correctly
installed according to the manufacturer's
instructions.
2. Locate the chemical dispenser terminal
block. See Figure 3-3.
3. Thread the incoming leads from the
chemical pumps through the strain reliefs
(at the lower rear of the machine) and to
the chemical dispenser terminal block.
liquid detergent or rinse additive)
Cut
tubing
4. Connect the wires as shown in Figure
5. Adjust the strain reliefs to fasten the wiring
Seal with plug
and wire clamp
3-6. Note that the terminal block supplies
LINE VOLTAGE SIGNALS. An additional
transformer may be required depending
on the supply requirements of the external
pumps.
in place. Leave enough slack in the wiring
to prevent stress on the terminal
connections. Bundle the wires together
using wire ties to prevent them from
tangling when repositioning the appliance.
Figure 3-6: External chemical pump
connections
1 2 3 4 11 12 12
RINSE PUMP DETERGENT
RELAY PUMP RELAY
LINE
Sends a Sends a
VOLTAGE SIGNAL VOLTAGE SIGNAL
each cycle for whenever
approx. 16.5 wash pump is
seconds on in operation
booster refill
S 3 - I
ECTION NSTALLATION
GND 5 6 7 8
GND 5 6 7 8
Not used
LINE
VOLTAGE
LINE
Free contacts
with constant
line voltage, if
needed by
dispensing
system
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