heatcraft-refrigeration-p h-im-fl1a User Manual

Quarterly

1) Visually inspect unit 
  •  Look for signs of oil stains on interconnection piping and  

    condenser coil. Pay close attention to areas around solder  

    joints, building penetrations and pipe clamps. Check any  

    suspect areas with an electronic leak detector. Repair any  

    leaks found and add refrigerant as needed.  

  •  Check condition of moisture indicator/sightglass in the  

    sight glass if so equipped. Replace liquid line drier if there  

    is indication of slight presence of moisture. Replace  

    refrigerant, oil and drier if moisture concentration is  

    indicated to be high. 

  •  Check moisture indicator/sightglass for flash gas. If found  

    check entire system for refrigerant leaks and add refrigerant 

    as needed after repairing any leaks. 
  • 

Check compressor sightglass (if equipped) for proper oil level. 

  •  Check condition of condenser. Look for accumulation of dirt  

    and debris (clean as required). 

  •  Check for unusual noise or vibration. Take corrective action 

    as required. 

  •  Inspect wiring for signs of wear or discoloration and repair  

     if needed. 

  •  Check and tighten all flare connections.

 

Semi-Annually

2) Repeat all quarterly inspection items. 

 

3) Clean condenser coil and blades 

  •  Periodic cleaning can be accomplished by using a brush,  

    pressurized water and a commercially available foam coil  

    cleaner. If foam cleaner is used, it should not be an acid  

    based cleaner. Follow label directions for appropriate use. 

  • Rinse until no residue remains.
4) Check operation of condenser fans 
  •  Check that each fan rotates freely and quietly. Replace any  

    fan motor that does not rotate smoothly or makes excessive 

    noise. 

  •  Check all fan blade set screws and tighten as required. 
  •  Check all fan blades for signs of cracks, wear or stress. 

    Pay close attention to the hub and spider. Replace blades  

    as required. 

  •  Verify that all motors are mounted securely. 
  •  Lubricate motors if applicable. Do not lubricate permanently  

    sealed, ball bearing motors.

5) Inspect electrical wiring and components 
  •  Verify that all electrical and ground connections are secure, 

    tighten as required. 

  •  Check condition of compressor and heater contactors. Look  

    for discoloration and pitting. Replace as required. 

  •  Check operation and calibration of all timers, relays  

 

    pressure controls and safety controls.

  •  Clean electrical cabinet. Look for signs of moisture, dirt,  

    debris, insects and wildlife. Take corrective action as  

    required. 

  •  Verify operation of crankcase heater by measuring amp  

    draw. 

6)  Check refrigeration cycle 

 

  •  Check suction, discharge and net oil pressure readings. If  

    abnormal take appropriate action. 

  •  Check operation of demand cooling, liquid injection or 

    unloaders if so equipped. 

  •  Check pressure drop across all filters and driers. Replace  

    as required. 

  •  Verify that superheat at the compressor conforms to  

    specification. (30°F to 45°F) 

  •  Check pressure and safety control settings and verify  

    proper operation.

Annually

7) In addition to quarterly and semiannual maintenance checks,  

  submit an oil sample for analysis 

 

  •  Look for high concentrations of acid or moisture. Change oil  

    and driers until test results read normal. 

  •  Investigate source of high metal concentrations, which 

    normally are due to abnormal bearing wear. Look for liquid  

    refrigerant in the crankcase, low oil pressure or low super- 

    heat as a possible source.

Whenever possible, replacement parts are to be obtained 

from a local wholesaler authorized to sell one of Heatcraft 

Refrigeration Productsʼ  brands. Replacement parts which 

are covered under the terms of the warranty statement 

on page 2 of this manual, will be reimbursed for total part 

cost only. The original invoice from the parts supplier 

must accompany all warranty claims for replacement part 

reimbursement. Heatcraft Refrigeration Products reserves 

the right to adjust the compensation amount paid on any 

parts submitted for warranty reimbursement when a parts 

supplierʼ s original invoice is not provided with a claim. 

You may obtain information regarding local authorized 

wholesalers by calling the Heatcraft Refrigeration Products 

Replacement Parts Center at 1-800-686-7278 between the 

hours of 7:30 AM to 4:30 PM Central Time.