Support Corner: Maintaining Your DRASH Heater During the Winter Months

The following maintenance procedures will ensure that your DRASH heater runs smoothly this winter. (Note: Never work on the heater while it’s plugged in or hot and always follow repair procedures in DRASH Technical Manual # 1002811.)

Always make sure to check the following points prior to starting the heater:

• Ensure that both fabric covers have been removed.
• Inspect both ends and the exhaust stack port for any debris.
• Prior to installing heater ducts, check inside the ducts for any debris.
• Secure by tightening strap. Minimize any bends. Keep ducts straight.
• Verify that the fuel tank is full and that the exhaust stack is properly installed.
• During cold weather, plug the heater in to a 120V ground power source 15 minutes prior to start up; this will allow the pre-heater to warm up the fuel filter and ease actual start up.
  

After every 50 hours of operation, perform the following maintenance procedures:

• Remove, disassemble and inspect the pre-heated fuel filter.
• Clean the fuel filter with clean fuel.
• Remove top cover and clean the heater’s exterior.
• Loosen and slide the maintenance access panel rearward.
• Using compressed air, clean the interior area.
• Clean the fan blade.
• Check for leaks and for proper attachment of High Temp (H.T.) connectors to electrodes.
• Remove burner assembly, clean and check electrode setting; adjust if needed.
  

Perform annual maintenance, including:

• Tighten loose nuts, bolts, fittings, and connections.
  
• Clean or replace the fuel filter.
  
• Drain and flush the fuel tank.
  
• Remove, clean, and adjust the burner assembly.
  
• Replace the fuel nozzle.
  

If you have questions or require assistance with your heater, DHS Systems has support facilities located across the country that are available to assist you.

You may also contact our customer hotline 24-hours a day, 7-days a week at 1-800-977-3647.