Mitsubishi Electric EHPT17X-VM2D Service Manual page 93

DISASSEMBLY PROCEDURE
How to remove the multi function group (ERST17D-
26.
***BD model)
(1) Remove the front panel. (Refer to Procedure 1.)
(2) Remove the DIV frame by cutting the band and removing
the 4 screws on it.(Photo 10-6)
(3) Remove the multi function group by detaching the same
diameter quick connection. (Photos 26)
• When reinstalling the multi function group, use new
O-rings. (Photos 26)
• Refer to Procedure 25 for how to attach and detach the
quick connection.
Note: Set the multi function group in the direction of the arrow
printed on the multi function group. (Photo 26)
How to remove the water pump (zone 1 and zone 2)
27.
(ERST17D-***BD model)
(1) Remove the front panel. (Refer to Procedure 1.)
(2) Disconnect the relay connector
zone2) under the control box. (Photo 4-4)
(3) Release the water pump lead wire from the cable clamp,
the fastener and the cable strap in the control box, and the
cable strap, the fastener and the band below the control
box. (Photos 4-1, 10-6 and 27)
(4) Remove the water pump by removing the two G1" nuts
using the 2 spanners: one to hold the G1" nut and the
other to turn the other side of G1" nut.
Remove the water pump by sliding it vertical. (Photo 27)
• When reinstalling the G1" nuts, use new G1" gaskets.
• Set the water pump in the way that the die stamped
arrow facing right, and the lead wire connectors to the
top. (Photo 27)
• Be sure to change the pump and the water pump lead
wire together.
• Be sure to wipe water around the surface of the pump
and the water pump lead wire thoroughly.
OCH714D
Photo 26
Photo 27
(Pump zone1 and Pump
Gasket (G1")
Nut (G1")
92
PHOTOS/FIGURES
Same diameter
Multi function group
quick connection
O-ring
Flow direction
Water pump (zone1)
Flow direction
Same diameter
quick connection
O-ring
Gasket (G1")
Nut (G1")
Cable strap
Water pump (zone2)