HP 403349-003 manual 113

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