THERMODYNE 742HW, Installation & Operation Manual

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2. Allow the unit to cool completely.
3. Using the overhang of the well section, raise
the hot well unit to its up position.
4. Place the safety catch in its holder.
Safety
Catch
Figure 11: Hot Well in Raised Position
5. Locate heater tank and remove cap.
Heater
Tank
Heater
Tank Cap
Figure 12: Heater Tank and Cap
6. Remove left side panel to gain access to drain
valve.
7. Place a pan or bucket beside drain plug in
order to catch drained fluid.
Return
Manifold
Drain
Hose
Drain
Valve
Figure 13: Drain Hose
8. Place drain hose into pan or bucket and turn
valve to open position.
9. Once unit has drained completely turn valve
to off position and tuck drain hose back into
cabinet.
10. Reattach the left side panel.
11. Refill the unit with Thermodyne Heat Transfer
Fluid only. Never substitute with water or other
liquids.
12. Reattach the heater tank cap.
13. Restore power to the unit and place the Power
ON/OFF switch in its ON position.
NOTE: Unit may run briefly and shut off due to
low fluid level.
14. Remove reservoir cap and heater tank cap
and fill heater tank.
Heater
Tank
Heater
Tank Cap
Figure 14: Heater Tank Cap & Reservoir Cap