Title Page

  • Prepared by

  • Conducted on

  • Site conducted

  • Solarvista Job Number

  • Verisae WON

Maintenance Tasks

  • The purpose of this document is to guide you through all tasks to be completed on a Major PPM on Tesco Larger Stores (All Stores with the exception of Express Stores) and to document all PPM's that we complete on our clients sites.

  • Condensing Unit
  • System Number

  • Make

  • Model

  • Year of manufacture

  • Refrigerant Type

  • Ensure All Electrics Are Operational and Condensing Unit is Controlling Correctly

  • Confirm Operation of Condenser Fan Motor

  • Clean Condenser With A Jet Wash Untill Condenser is Clear Through

  • Confirm condensing unit housing is free from damage and corrosion

  • Secure All Panels On Condensing Unit With Correct Fixings And Ensure Unit is Weather Proof.

  • Pack

Details

  • System Number

  • Asset Number

  • Make

  • Model

  • Serial

  • Year of Manufacture

  • Refrigerant type

  • Are PRV's in Date and Tagged

  • Expiry Date

  • Are PRV's Tagged

  • If PRV's are Out Of Date, Details of PRV's Required

Safety Checks

  • Erect Signage Close to Work Area to Warn of Any Work in Progress

    Picture1.jpg
  • Ensure Work Area is Clear From Any Obstruction

  • Check General Condition of Asset

  • Perform Test Run To Confirm Asset is Operational

Visual Inspections

  • Confirm Asset Tag is In Place and Not Damaged

  • Confirm Correct Warning Labels are Displayed on Control Panel Door

  • Confirm Mains Incoming Isolator Terminal Shields are in Place

  • Confirm Panel Wiring and Components Have No Signs of Over Heating Damage

  • Confirm Pack Has no Liquid Flood Back

  • Confirm Oil Level is Achieved in All Compressors & Oil Separators

  • Confirm Liquid Reciever is Free From Corrosion & Damage

  • Confirm All PRV's are Connected To Vent Lines

  • Confirm There is a Visible Level in The Bottom Indicator of the Liquid Line Sight Glass

Electrical Tasks

  • Confirm Isolator Engineer Interlock is Functioning Correctly. **This Allows Access to Control**

  • Using an Infrared Thermometer, Record Mains Terminal Temperatures **Should Not Exceed 40°c**

  • Confirm All Ventilation Panel Fans are Working and Filters are Clear of Debris

  • Confirm All Overloads and Trips are Operational

  • Confirm All Compressors Run When Required by Pack Controller

  • Check All Compressor Run Currents From The Overload

  • Confirm Against Compressor Data Plates That All Overloads Are Set No Higher Than 10% Above The Full Load Amps

  • Confirm All Crankcase Heaters are Operational

Refrigeration Tasks

  • Confirm Operation of Housing Extract Fan, Isolate and Clean Using A Soft Brush

  • Confirm All Compressor Mounts and Fixings Are Present and Secure

  • Rota Lock Torque Chart

    Picture2.png
  • Confirm All Compressor Rota Lock Valves are Tightened To Correct Torque Setting

  • Confirm Compressor Vapour/Liquid Injection is Operational with Compressor Running (LT ONLY)

  • Visually Inspect Oil in Compressors and Oil Separators/Reservoir Sight Glasses for Any Signs of Burnout or Acidity.

  • Confirm Oil Separator for Excessive Pressure Drop Across the Internal Filter. **If Pressure Drop is More Than 20PSI Filter Requires To Be Replaced**

  • Test All Override and Safety Switches, Confirm Safety Switches Operate at The Correct Pressure. **Label Switches With Test Date and Set Pressure**

  • Trip Main Pack Controller to Confirm the Plant Runs in Backup Mode, Reset The Main Controller After Task. **Label Back up controller with High Suction Set Point and Time**

  • Confirm With Service Gauges That Pressure Transducers are Reading Correctly for the Main Pack Controller and Backup Controller

  • Replace Liquid Line Drier Core. **Label Plant or Drier Housing With Date of Replacement**

  • Leak Test All Refrigeration Pipework & Components

Condenser

  • Test For Non Condensable in Condenser

  • Confirm All Condenser Fan Fixings, Blades and Fan Guards are In Place and Secure

  • Confirm That The Rotation of Condenser Fans and The Operation of The Controllers is Correct

  • Brush Off Debris from Underneath the Condenser Prior to Jet Washing. Lock Off and Tag off Each Fan When Jet Washing the Condenser.

    Picture3.png
  • Remove One Fan At A Time and Jet Wash Condenser Down Through From Above, Ensure Water is running Clear When Completed. **upload Photo of Condenser After Clean**

  • Confirm Condenser Fins Are Clear From Any Damage Or Corrosion. If Fines are Damaged, Straighten Using Correct Size Fin Comb

Completion

  • Ensure Electrical Panel and Interior of Pack Housing is Clean and Free From Debris

  • Ensure Electrical Panel Door Fully Closes and Locks are Engaged

  • Ensure All Drawings are Left in Designated Folder

  • Leave Work Area In a Clean & Tidy Condition

  • Close and Lock Plant Doors, Ensuring Canopy Locks are in Place

Shop Floor

Shop Floor

  • Leak Test All Shop Floor Refrigeration Cabinets, Pipework and Components

  • Confirm All Shop Floor Integral Condensers Are Clean.

  • Confirm All Dividers in Shop Floor Cabinets Are In Place and Free From Damage

Monitoring Panel

  • Confirm on Alarm Panel All Cases are Running to Set Point & Communicating

  • Confirm Battery Status, Replace if Required

  • Confirm All Alarms are Clear and Healthy On Ims. **Area Desk Engineer Will Confirm**

Signature

  • All Tasks On This PPM Are Complete

The templates available in our Public Library have been created by our customers and employees to help get you started using SafetyCulture's solutions. The templates are intended to be used as hypothetical examples only and should not be used as a substitute for professional advice. You should seek your own professional advice to determine if the use of a template is permissible in your workplace or jurisdiction. You should independently determine whether the template is suitable for your circumstances.