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11
Remove the cap from connector C and connect the condensate
drain pipe to drain connector C. (see Fig. 25).
NOTE: For size 18, the External Condensate lift pump should be
removed (see Fig. 24).
Connector C
Fig. 24 −
Sizes 9, 12, 18 with External Condensate Lift Pump
Connector C
Fig. 25 −
Sizes 24 to 48 with Built−in Condensate Lift Pump
DRAINAGE TEST FOR UNITS WITHOUT A
CONDENSATE LIFT PUMP
Check that the drainpipe is unhindered. Fill the drain pan with 0.5
gallons (2 liter) of water.
Stow tube
Fig. 26 −
Units without a Pipe
CONDENSATE LIFT PUMP AND DRAINAGE TEST
Follow these steps to perform the test:
1. Remove the test cover by rotating it counter−clockwise as
2. Using a piece of tubing or pipe, fill the condensate lift pump
reservoir with 70 oz. of water (see Fig. 28).
3. Turn the unit ON in cooling mode. The condensate lift
pump comes on. Watch the end of the drain pipe for any
water. It may take some time for the water to travel,
depending on the length of the drain pipe.
4. During this test, check all bends or joints for leakage.
Fig. 27 −
Check the Bends and Joints for Leakage
A150675
Fig. 28 −
Tube/Pipe Insert
Condensate Lift Pump Maintenance
1. Remove the four screws from the drain pump (sizes 24 to 48).
2. Unplug the pump power supply and water level switch
cable.
3. Detach the pump.
Pump
Fig. 29 −
Detach the Pump
Summary of Contents for 40MBDQ series
Page 6: ...6 DIMENSIONS CONT Airflow Airflow Fig 5 Indoor Unit Sizes 58K...
Page 14: ...14 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 32 Fan Performance 40MBDQ09...
Page 15: ...15 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 33 Fan Performance 40MBDQ12...
Page 16: ...16 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 34 Fan Performance 40MBDQ18...
Page 17: ...17 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 35 Fan Performance 40MBDQ24...
Page 18: ...18 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 36 Fan Performance 40MBDQ36...
Page 19: ...19 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 37 Fan Performance 40MBDQ48...
Page 20: ...20 FAN PERFORMANCES AT VARYING STATIC PRESSURES CONT Fig 38 Fan Performance 40MBDQ58...