Heatcraft Refrigeration Products H-IM-82C installation instructions System Troubleshooting Chart

Page 20

 

 

 

 

 

 

 

 

Installation and Operations Manual

 

 

 

 

 

 

 

 

 

 

 

Table 5.

 

System Troubleshooting Chart

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEM

 

POSSIBLE CAUSES

 

POSSIBLE CORRECTIVE STEPS

 

 

 

Compressor

1.

Main switch open.

1.

Close switch.

 

 

 

will not run

 

 

 

 

 

 

 

2.

Fuse blown.

2.

Check electrical circuits and motor winding for shorts or grounds.

 

 

 

 

 

 

 

 

 

Investigate for possible overloading. Replace fuse after fault is corrected.

 

 

 

 

 

 

3.

Thermal overloads tripped.

3.

Overloads are automatically reset. Check unit closely when unit comes

 

 

 

 

 

 

 

 

 

back on line.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Defective contactor or coil.

4.

Repair or replace.

 

 

 

 

 

 

5.

System shut down by safety devices.

5.

Determine type and cause of shutdown and correct it before resetting

 

 

 

 

 

 

 

 

 

safety switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.

No cooling required.

6.

None. Wait until calls for cooling.

 

 

 

 

 

 

7.

Motor electrical trouble.

7.

Check motor for open windings, short circuit or burn out.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.

Loose wiring.

8.

Check all wire junctions. Tighten all terminal screws.

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor

1.

Flooding of refrigerant into crankcase.

1.

Check setting of expansion valves.

 

 

 

noisy or vibrating

 

 

 

 

 

 

 

2.

Worn compressor.

2.

Replace.

 

 

 

 

 

 

 

 

 

 

 

 

 

High

1.

Non-condensables in system.

1.

Remove the non-condensables.

 

 

 

discharge

 

 

 

 

 

 

 

2.

Fan not running.

2.

Check electrical circuit. Replace if motor fails.

 

 

 

pressure

3.

Dirty condenser coil.

3.

Clean.

 

 

 

 

 

 

 

 

 

 

 

4.InformationService

 

 

 

 

4.

System overcharged with refrigerant.

4.

Reclaim refrigerant and recharge proper amount.

 

 

 

 

 

 

 

 

 

 

Low

1.

Lack of refrigerant.

1.

Check for leaks. Repair and add charge (see refrigerant charge chart pg 2).

 

 

 

Low discharge

1.

Insufficient refrigerant in system.

1.

Check for leaks. Repair and add charge.

 

 

 

pressure

2.

Low suction pressure.

2.

See corrective steps for low suction pressure.

 

 

 

High suction

1.

Excessive load.

1.

Reduce load or add additional equipment.

 

 

 

pressure

 

 

 

 

 

 

 

2.

Expansion valve overfeeding.

2.

Check remote bulb. Regulate superheat.

 

 

 

 

 

 

 

 

 

 

 

 

 

suction

 

 

 

 

 

 

 

2.

Evaporator dirty or iced.

2.

Clean.

 

 

 

pressure

3.

Expansion valve malfunctioning.

3.

Check and reset for proper superheat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Condensing temperature too low.

4.

Check ambient temperature 50°F to 100°F.

 

 

 

Compressor

1.

Operating beyond design conditions.

1.

Add equipment so that conditions are within allowable limits.

 

 

 

thermal protector

 

 

 

 

 

 

 

 

 

2.

Dirty condenser coil.

2.

Clean coil.

 

 

 

switch open

 

 

 

 

 

 

 

 

 

3.

Overcharged system.

3.

Reduce charge (see refrigerant charge chart, pg 2).

 

 

 

 

 

 

 

 

 

 

 

 

 

Fan(s) will

1.

Main switch open.

1.

Close switch.

 

 

 

not operate

2.

Blown fuses.

2.

Replace fuses. Check for short circuits or overload conditions.

 

 

 

 

 

 

3.

Defective motor.

3.

Replace motor.

 

 

 

 

 

 

4.

Defective defrost control.

4.

Replace defective component.

 

 

 

 

 

 

5.

Unit in defrost cycle.

5.

Wait for completion of cycle.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.

Coil does not get cold enough to reset thermostat

6.

Adjust fan delay setting of control.

 

 

 

 

 

 

 

 

 

 

 

 

 

Room

1.

Control cut out set too high.

1.

Adjust control.

 

 

 

temperature

2.

Superheat too high.

2.

Adjust thermal expansion valve.

 

 

 

too high

 

 

 

 

 

 

 

3.

System low on refrigerant.

3.

Add refrigerant. See refrigerant charge chart pg. 2.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Coil iced-up.

4.

Manually defrost coil. Check defrost controls for malfunction.

 

 

 

 

 

 

 

 

 

 

 

 

 

Ice accumulating

1.

Defrost duration is too long.

1.

Adjust defrost termination temperature on control.

 

 

on ceiling around

2.

Fan delay not delaying fans after defrost period.

2.

Adjust fan delay setting or replace bad sensor.

 

 

 

evaporator and/or

 

 

 

 

 

 

 

3.

Defective defrost control or sensor.

3.

Replace defective control or sensor.

 

 

 

on fan guards'

4.

Too many defrosts.

4.

Adjust number of defrosts.

 

 

 

venturi or blades

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Coil not clearing

1.

Coil temperature not getting above freezing

1.

Check heater operation.

 

 

 

of frost during

 

point during defrost.

 

 

 

 

 

defrost cycle.

2.

Not enough defrost cycles per day.

2.

Adjust control for more defrost cycles.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Defrost cycle too short.

3.

Adjust defrost control, defrost duration setting.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.

Defective defrost control or sensor.

4.

Replace defective component.

 

 

 

 

 

 

 

 

 

 

 

 

 

Ice accumulating

1.

Defective heater.

1.

Replace heater.

 

 

 

in drain pan

2.

Unit not installed properly (out of level)

2.

Check and adjust if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.

Drain line plugged.

3.

Clean drain line.

 

 

 

 

 

 

4.

Defective control.

4.

Replace defective component.

 

 

 

 

 

 

 

 

 

 

 

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Contents PRO 3 Top Mount Packaged Refrigeration System Performance / Electrical Data Cooler Air Defrost Systems Cooler Electric Defrost SystemsFreezer Electric Defrost Systems For PSC, E for EC motors on evaporator section onlyDimensional Diagrams See reference onRecommended Unit Placement For PTT Models Top View One SystemTop View Two Systems MinAccess Requirements General Safety InformationControl Factory Default Settings RiggingStandard Installation Procedure Drain LinePTT Models On 2 fan modelsCurb placed on roof of walk-in cooler Service Information MaintenanceSystem Standard Maintenance Guidelines Refrigeration Sequence of OperationModel PTT Low Temperature Models EZY Setting =1 Refrigeration/Defrost Sequence of OperationStatus Compressor Condenser Evaporator Defrost If unit shows OFF, depressOff Defrost is terminated Model PTT Medium Temperature Models EZY Setting =2Model PTT High Temperature Models EZY Setting =3 Installation and Removal Programming the Pjezc Carel Electronic ControllerElectrical Connections DisplayOutput Not FittedFunctions Available from Keypad Preliminary ConfigurationsKeypads Temperature Display Temperature ControlTable of Alarms and Signals AlarmRapid Parameter Set Selction EZY CodeDescription of the Main Signals and Alarms Data ErrorSetting the Default Parameters Accessing the type F parametersAccessing the type C parameters Modifying the ParametersTroubleshooting Problem Cause ChecksDevice Setup Set 1 Low Temperature Models L6 w/ -10 F Set PointSet 2 Medium Temperature Models M6 w/ 34 F Set Point Set 3 High Temperature Models H6 w/ 38 F Set PointSystem Troubleshooting Chart Problem Possible Causes Possible Corrective StepsDependable. Versatile. Courteous Replacement Parts byRight source. Right parts. Right now Temp Defrost Systems Single PhaseWiriInformation.5g Wiring Information MediumModel PTT072M6BE RevCooler Air Defrost Systems Single Phase Diagram 3. Wiring DiagramSystem, Typical High Temp ForWarranty Statement Optional Three-Year Extended Compressor WarrantyHeatcraft Refrigeration Products, LLC West Park Place Blvd., Stone Mountain, GA

H-IM-82C specifications

Heatcraft Refrigeration Products has long been a trusted name in the refrigeration industry, dedicated to providing innovative solutions for commercial cooling needs. One of their standout products is the H-IM-82C unit, a remarkable addition to the line that exemplifies reliability, efficiency, and advanced technology.

The H-IM-82C is engineered with exceptional features that cater to various commercial applications. It utilizes a reliable hermetic compressor specifically designed for durability and energy efficiency. This compressor ensures optimal performance while minimizing power consumption, which can lead to significant savings on energy bills over time. Additionally, the unit boasts a high-performance evaporator coil that augments cooling efficiency by maximizing heat transfer. This design feature allows for quicker cooling times, making it ideal for environments that require precise temperature control, such as food storage and preparation areas.

Another notable characteristic of the H-IM-82C is its robust insulation. The unit employs high-density foam insulation that not only enhances energy efficiency but also prevents condensation and frost build-up. This insulation method helps maintain consistent internal temperatures, which is crucial for preserving the quality of perishable goods.

Safety and monitoring technologies are also integral to the H-IM-82C's design. The unit is equipped with advanced electronic controls that facilitate easy temperature adjustments and greater operational oversight. Users can benefit from real-time monitoring and alerts, helping to ensure compliance with food safety regulations.

Moreover, the H-IM-82C is designed with versatility in mind. It can be installed in a variety of configurations, whether horizontally or vertically, allowing for seamless integration into existing systems. Its compact design is another advantage, saving space while still delivering exceptional cooling performance.

Overall, the Heatcraft H-IM-82C is a commendable option for businesses seeking a reliable refrigeration solution. With its energy-efficient compressor, advanced insulation, and user-friendly controls, it effectively balances performance and cost-effectiveness, making it a preferred choice in the competitive landscape of commercial refrigeration. Whether for a restaurant, supermarket, or food processing facility, the H-IM-82C delivers the quality and reliability that Heatcraft is known for, ensuring peace of mind for operators and optimal conditions for stored products.
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