Heatcraft Refrigeration Products H-IM-79E manual Expansion Valve Capacity, Diagnostics

Page 24

Expansion Valve Capacity

 

 

 

 

R-22

 

 

R-404A / R-507

 

 

 

 

Evaporator Temperature (°F.)

Evaporator Temperature (°F.)

 

 

 

+20

 

-20

+20

 

 

-20

Part Number

Valve

Pressure Drop Across Valve (psi)

Pressure Drop Across Valve (psi)

100

BTUH

100

BTUH

100

BTUH

100

BTUH

29320003

ESVB-1

0.68

8160

0.64

7680

0.48

5760

0.42

5040

29320004

ESVB-4

3.27

39240

3.07

36840

2.31

27720

2.05

24600

29320007 - 08

ESVB-10

8.02

96240

7.54

90480

5.65

67800

5.01

60120

29320013

ESVB-15

15.14

181680

14.25

171000

10.69

128280

9.47

113640

29320014

ESVB-20

22.18

266160

20.87

250440

15.65

187800

13.86

166320

Diagnostics

Beacon II Troubleshooting Guide

PROBLEM

Step

ACTION ITEM

IF OK

IF NOT OK

 

 

1.

Check Primary Power Supply Disconnect

 

1.

Check fuses and circuit breakers

 

 

2.

Check Voltage to Evaporator Transformer

Go to

2.

Check field wiring for breaks

LED is not lit.

3.

Check Transformer Secondary Output Volts

next step

3.

Replace if necessary

 

 

4.

Check Voltage at Control Board (24V and C)

 

4.

Check factory wiring and connections

 

 

5.

Replace Control Board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Check Compressor internal overloads

 

1.

Wait for reset

LED shows Coo, but

2.

Check Control Power to Condensing Unit

 

2.

Check transformer voltage (secondary and

 

 

 

(24 Volts across “COMP” and “C” at board)

Go to

 

primary) and wiring of 208V power taps.

compressor will not run.

3.

Check Compressor Contactor Coil Voltage

next step

3.

Check internal condensing unit wiring

 

 

4.

Check Compressor Contactor “pulled in”

 

4.

Replace as needed

 

 

 

 

 

 

 

 

 

ERROR CODES:

 

 

 

 

 

 

 

E1 Room Sensor

 

 

 

Check Sensor and Board Connection

 

Replace as needed

E2 Defrost Sensor

 

 

 

Check Sensor and Board Connection

 

Replace as needed

E3 Suction Sensor

 

 

 

Check Sensor and Board Connection

 

Replace as needed

E4 Suction Transducer

 

 

 

Check Transducer and Board Connection

 

Replace as needed

E5 Outdoor Sensor

 

 

 

Check Sensor, wiring and Board Connection

 

Replace or remove

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.

Check Refrigerant Type

 

1.

Compare board setpoint and refrigerant

 

 

 

2.

Check coil for ice

 

2.

Defrost coil and check defrost cycle

 

 

 

 

 

 

 

 

settings/setpoints, defrost sensor and

E6 Low Superheat

 

 

 

 

 

 

 

heater amps.

 

 

3.

Check Control Board step position from board LED

 

3. Replace board if EEV steps not at 2.

 

 

 

During Cooling

 

4.

Check Electric Expansion Valve Closure

Go to

4.

Pumpdown system see if LPS opens or if it

(0°F for 2 minutes)

 

 

 

 

next step

 

times out (EEV is bad or LPS is set

 

 

 

 

 

 

 

 

incorrectly, if times out) – See Pumpdown.

 

 

 

5.

Compressor Not Operating

 

5.

Check overloads and contactor.

 

 

 

6.

Check Suction Temperature Sensor

 

6.

Compare board sensor reading against

 

 

 

 

 

 

 

 

actual suction line temperature.

 

 

 

7.

Check Suction Pressure Transducer

 

7.

Compare pressure reading against gauges.

 

 

 

 

 

 

 

 

 

24

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Contents Installation 2007, Heatcraft Refrigeration Products LLC Beacon II Board Beacon II Board LayoutInstallation Installation TipsCondensing Unit Evaporator UnitPower Supply WiringBrazing Refrigerant Line Brazing CautionConfiguration Multiple Evaporator Configuration Master/slaveBox Temp Control Settings Box Temperature Control SettingsLeak Testing Refrigerant ChargingStart-Up Operation Single System With 1 EvaporatorSingle System With Multiple Evaporators Smart Controller Initial Power On Operating Mode DisplayProgramming And Reviewing Settings / Changes Programming & ReviewingProgramming And Reviewing Settings / Changes cont’d Monitor Locking The Beacon II Board Status Indicator LED Low Ambient OperationPumpdown Periodic PumpdownPumpdown / Defrost Defrost / Alarms Error Indicator Error Indicator LedEvaporator Fans Shut Off Checking Operation of Expansion Valve Checking Operation Of Expansion Valve EEVExpansion Valve Motor Winding Resistance Power Failures Power FailuresSpare Sensor Terminals Checking SensorsSystem Defaults ParametersAIR InterLink Replacement Parts List Part Description Part NumberOperational Limits Diagnostics Beacon II Troubleshooting GuideExpansion Valve Capacity Or other measures Master Slave Out Placing system into Service Mode Terminating Service Mode Wiring Wiring Wiring Wiring Wiring Wiring Preventive Maintenance EvaporatorsService Record Outdoor Temperature System Voltage Record

H-IM-79E specifications

Heatcraft Refrigeration Products has long been a leader in eco-friendly and efficient cooling solutions, and the H-IM-79E is a prime example of their commitment to innovation and sustainability. Designed for commercial use, the H-IM-79E is a high-performance refrigeration unit ideal for supermarkets, convenience stores, and restaurants, where reliable temperature control is essential.

One of the standout features of the H-IM-79E is its energy efficiency. This unit employs advanced compressor technology that optimizes power consumption without sacrificing cooling performance. In addition, it is designed to minimize operational costs, making it an attractive option for businesses looking to reduce their energy bills while maintaining high standards of refrigeration.

The H-IM-79E integrates a robust refrigerant management system that uses environmentally friendly refrigerants, aligning with Heatcraft's commitment to reducing the carbon footprint of their products. This not only helps businesses comply with environmental regulations but also promotes a healthier planet for future generations.

Another key characteristic of the H-IM-79E is its superior temperature stability. The unit is equipped with precision temperature control technology that ensures consistent cooling performance, preventing temperature fluctuations that can compromise food quality and safety. This reliability is crucial in commercial settings where maintaining optimal storage conditions is essential.

The design of the H-IM-79E is also noteworthy. It features a compact footprint, allowing it to fit seamlessly into various commercial environments without taking up valuable floor space. Additionally, the unit is built with durable materials, ensuring longevity and minimizing maintenance needs.

User-friendly interfaces make the H-IM-79E easy to operate. It includes advanced monitoring and diagnostics capabilities, allowing business owners to track performance in real-time and address potential issues before they escalate. The incorporation of smart technologies means that operators can remotely monitor and control the system, providing flexibility and peace of mind.

In summary, the Heatcraft Refrigeration Products H-IM-79E stands out for its energy efficiency, eco-friendly refrigerant use, reliable temperature control, compact design, and user-friendly features. This combination of attributes makes it an ideal choice for businesses that prioritize both sustainability and performance in their refrigeration needs.
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