B&C Technologies IM Series Industrial Ironer - Manual (Page 72)

5.8 Thermal Fluid Maintenance
5.8.1 Fluid Life
The thermal fluid should be sampled and analyzed 1 to 2 times a year to monitor it for deterio-
ration. However, in many settings the best practice is to change the thermal fluid annually. For
analysis contact you thermal fluid supplier. Remember, the higher the working temperature, the
shorter the fluid life will be. Careful and conservative laundry managers can potentially have fluid
life of 2 years or more.
5.8.2 System Cleaning
Most thermal fluid suppliers recommend cleaning the system in the ironer with a cleaning solvent
when your fluid is changed. This is a good practice as it will keep your system of carbon occlusions
and other potential problematic foreign material. To clean the system you will in general proceed
as follows:
1. Drain the system and clean the filter screen
2. Refill with a system cleaner, purge, and operate according to the supplier’s recommendations
3. Drain the system and clean the filter screen
4. Refill with new Thermal Fluid
5.8.3 Fluid Filter Screen
The screen should be checked and cleaned bi-annually. Accumulation of carbon chunks, metal
filings, or other abnormal debris can indicate problems before they become catastrophic. We rec-
ommend making notes on the condition of the screen in a maintenance log so you can compare
results of the inspections. To clean the filter screen first drain all fluid from the system (if changing
the fluid) or proceed as follows:
1. Cool the ironer to 60C or lower (perform the procedure first thing in the morning when the
machine is cool if possible).
2. Close valves A, B, and C. This isolates the pump and filter screen for service so a minimal
amount of fluid is lost during the procedure. Refer to the thermal fluid system diagram for
valve nomenclature details.
3. Remove the plug in the bottom of the filter screen cover and drain the fluid into a metal or
oil safe plastic container at least 2 gallons in volume.
4. Remove the 4 bolts holding the filter screen cover plate on the bottom of the assembly.
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