Volvo C30 2007 Service And Repair Manual page 547

Pull off the intake hose that covers the upper mounting for the exhaust system.
Move the intake hose to one side.
Disconnect the upper mounting (as illustrated). Remove the screw.
Fig. 162: Identifying Shield And Clips
Courtesy of VOLVO CARS CORPORATION
Raise the vehicle.
Remove:
the right-hand front wheel

the shield under the vehicle. It is secured with 7 clips.

Disconnect the water pump. See: WATER PUMP, FUEL-DRIVEN AUXILIARY HEATER (2007-2009).
Leave the water pump hanging from its hoses.
2012 Volvo C30 T-5
HVAC Climate Units - Removal, Replacement And Installation