Milnor E-P Express - Pump Signal Connections; Processor Board; Table 3 Chemical Injection Signals

12
Pellerin Milnor Corporation
the same chemical. Actuate one pump for injecting small quantities, and use both pumps or
valves for larger quantities.
1.5.2 Pump Signal Connections
BNCOUI02.C01 0000206324 A.5 A.6 A.3 1/2/20 1:25 PM Released
The E-P Express
®
controller closes certain relay contacts when chemicals are desired and to flush
the chemical system after each injection. These signals are alternating current at the control cir-
cuit voltage and cannot be made potential-free. Any device driven by this signal can draw up to
37 milliamperes.
NOTE: The manifold flush signal is effective only if the chemical supply system pro-
vided by others is properly designed and connected to a flushing water source.
CAUTION: Component Damage Hazard — Board components will burn out and re-
quire board replacement if devices driven by inject signals do not meet the
above electrical specifications. Pumps usually draw a higher current than
specified above, and will cause board damage.
This machine provides signals for five chemicals and a manifold flush. Table 3: Chemical Injec-
tion Signals, page 12 contains the connection details for these signals. All chemical signal con-
nections are available on terminal strip TBS, as shown in Figure 6: Pump Signal Connections,
page 13 . This terminal strip is located in the electrical enclosure on the left rear of the machine,
where the machine power connections are made.
Table 3. Chemical Injection Signals
Signal
Component
Chemical
Relay
Processor Board
Connection
TBS Terminal
Number
Chemical 1
Detergent
K2
M5–3, 1
1
Chemical 2 Bleach K5
M5–6, 1
2
Chemical 3 Sour
K4
M5–5, 1
3
Chemical 4 Softener K3
M5–4, 1
4
Chemical 5 Starch
K1
M5–2, 1
5
Manifold Flush none K9
M3–5, 1
6
Commissioning