Section 4:
Operating Features & Functions
Copyright © 2011 Haskris Company 25 www.haskris.com
Version R1600-X-R407C-XXX Instruction Manual Rev00
Figure 4.2 Bypass Valve
Figure 4.2 Bypass ValveFigure 4.2 Bypass Valve
Figure 4.2 Bypass Valve
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Water Pressure
Water Pressure Water Pressure
Water Pressure
Bypass/Relief Valve
Bypass/Relief ValveBypass/Relief Valve
Bypass/Relief Valve
The Bypass/Relief valve
modulates. The valve does not
snap open and closed. The
valve serves two basic functions:
1. Divert Water Pump Discharge Flow
Its primary function is to divert the water pump discharge flow whenever
the pump pressure reaches the bypass pressure setting. The glycol solution
is diverted through the bypass line, through the evaporator and into the
storage tank. The valve opens when the closed-loop becomes restricted,
such as when a filter or strainer becomes restricted or some other flow
restriction develops. The bypass would also open if the pressure relief
setting was not set above the required pressure to overcome the resistance
to flow (pressure drop) in the closed loop.
2. Partial-Flow Diversion
As a secondary function, the valve can be used for partial-flow diversion.
If the flow characteristics of the pump cause excessive pressure drop
through the heat exchanger on the equipment being cooled, this valve can
be adjusted to bypass some of the excess glycol solution. This reduces the
flow through the equipment, thereby reducing the pressure required to
complete the circuit.
4.2.1 Bypass/Relief Valve Adjustment Procedure:
Figure 4.1 Electronic Controller
Figure 4.1 Electronic ControllerFigure 4.1 Electronic Controller
Figure 4.1 Electronic Controller
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