Howe 1000-RLE, Installation & Service Manual

Page: 17 / 53

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17
Evaporator Pressure Setting
Model Temperature R ‐ 404A
1000 ‐ RLE 0°F 33 PSI
2000 ‐ RLE ‐ 5°F 28 PSI
3000 ‐ RLE ‐ 5°F 28 PSI
Evaporator Pressure Regulator (EPR)
The EPR will hold the suction temperature at
the proper level, allowing for minor
adjustments to be made using the Thermostatic
Expansion Valve (TXV).
Even though the suction temperature at the
Evaporator is correct, the TXV may still be
underfeeding or overfeeding.
All EPRs are shipped loose and must be field
installed. The EPR should ideally be located
within 2 feet of the Ice Flaker.
To read EPR setting install service manifold at
the Pressure Tap of the Evaporator or at the
inlet of the EPR.
For Angle Style EPR, remove end cap and adjust
using a 1/4" hex wrench.
To increase the pressure setting, rotate
clockwise.
To decrease the pressure setting, rotate
counter ‐ clockwise.
If EPR fails to regulate pressure properly it must
be repaired or replaced.
For Globe Style EPR, adjust top stem.
To ensure an accurate setting, it is important to
set the EPR when the ambient temperature at
the Condensing Unit is 10°F below the
maximum rated ambient temperature.