HP 403349-003 manual 4

Replacing the heat exchanger unit with couplers................................................................................	63
Heat exchanger unit (HEX) with ball valve ..................................................................................................	67
Removing the heat exchanger unit with ball valves.............................................................................	68
Replacing the heat exchanger unit with ball valves.............................................................................	72
HEX coupling..........................................................................................................................................	77
Removing the HEX coupling ............................................................................................................	78
Replacing the HEX coupling ............................................................................................................	80
Magnetic solenoid valve ..........................................................................................................................	82
Removing the magnetic solenoid valve .............................................................................................	82
Replacing the magnetic solenoid valve .............................................................................................	84
Management module...............................................................................................................................	85
Removing the management module..................................................................................................	85
Replacing the management module .................................................................................................	86
Operator display.....................................................................................................................................	88
Removing the operator display ........................................................................................................	88
Replacing the operator display........................................................................................................	91
Power inlet box .......................................................................................................................................	93
Relocating the power inlet box ........................................................................................................	93
Relocating the power inlet box back into position ..............................................................................	95
Water group controller ............................................................................................................................	97
Removing the water group controller ................................................................................................	97
Replacing the water group controller..............................................................................................	100
Water inlet coupling ..............................................................................................................................	102
Removing the water inlet coupling .................................................................................................	102
Replacing the water inlet coupling .................................................................................................	105
Water temperature sensor ......................................................................................................................	107
Removing the water temperature sensor..........................................................................................	107
Replacing the water temperature sensor .........................................................................................	109
Operation checklist................................................................................................................................	111
Restoring power to the MCS unit ...................................................................................................	111
Restoring water flow ....................................................................................................................	112
Technician repair removal and replacement procedures................................................................	113
Miscellaneous hardware kit overview.......................................................................................................	113
Technician repair required tools ....................................................................................................	114
Flow meter ...........................................................................................................................................	114
Removing the flow meter ..............................................................................................................	114
Replacing the flow meter ..............................................................................................................	117
Magnetic valve .....................................................................................................................................	118
Removing the magnetic valve diaphragm and spring .......................................................................	118
Replacing the magnetic valve diaphragm and spring .......................................................................	120
Upgrading procedures ..............................................................................................................	123
Viewing the upgrade procedures video ....................................................................................................	123
Upgrading the HEX coupler ....................................................................................................................	123
Removing the HEX coupler............................................................................................................	123
Replacing the HEX coupler............................................................................................................	128
Upgrading the HEX hose coupler.............................................................................................................	132
Removing the HEX hose coupler ....................................................................................................	132
Replacing the HEX hose coupler ....................................................................................................	132
Maintenance ............................................................................................................................	139
Maintenance and service .......................................................................................................................	139
Air and water heat exchanger maintenance....................................................................................	139
	Contents 4