Anderson JD Series - Power Supply; Booster Pump Switch

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2.3.2 Power Supply
The HTST is powered by either 120 or 240 VAC, 50-60Hz.
WARNING: Check the instrument nameplate for the specific rating before connecting to
power source. Current draw is less than 1/4 amp, so 18 AWG, 2-conductor with
ground instrument wire is sufficient. Power connections are made to terminals
1, 2 and 3 of the instrument strip inside the bottom of the case as shown in
Figure 6.
FIGURE 6 HTST DIFFERENTIAL PRESSURE SWITCH WIRING CONNECTIONSFIGURE 6 HTST DIFFERENTIAL PRESSURE SWITCH WIRING CONNECTIONS
FIGURE 6 HTST DIFFERENTIAL PRESSURE SWITCH WIRING CONNECTIONSFIGURE 6 HTST DIFFERENTIAL PRESSURE SWITCH WIRING CONNECTIONS
FIGURE 6 HTST DIFFERENTIAL PRESSURE SWITCH WIRING CONNECTIONS
2.3.3 Booster Pump Switch
The Booster Pump Starter Relay circuit is connected in series through terminals 4 and
5 of the terminal strip as shown in Figure 5. The switch between these terminals, is
normally open (NO) when the differential pressure between pasteurized and raw
product is below the adjustment set point (see Section 3.1).
WARNING: Do not connect the Booster Pump to itself through the switch, as the
switch rating of 5 amps will be exceeded.
NOTE: For failsafe operation, the HTST Differential Pressure Switch has been
designed so that interruption of power to the instrument will de-energize
and throw it into its open position thereby shutting off the Booster Pump.
When utilizing the optional high pressure limit switch to protect the
Booster Pump Starter, simply wire a jumper between 4 and 7, and wire
the pump through the Normally Closed (NC) contacts on relay K-2 as
shown in Figure 7.
NOTE: Relay K-2 is a SPDT relay and may be wired as an alarm contact,
independent of the Booster Pump relay.