A fluid cartridge assembly includes a fluid cartridge and a cap. The fluid cartridge includes a cartridge body and a flange extending from the cartridge body. The cap includes a locking latch, first and second squeeze handles, and a lever. The locking latch is configured to engage the flange of the fluid cartridge to couple the cap to the cartridge. The first squeeze handle being operatively coupled to said locking latch and configured to be depressed in a radially inward direction toward said second squeeze handle causing said locking latch to move in a radially outward direction. The lever is coupled to at least one of the first and second squeeze handles and configured to move between two positions. In one position the squeeze handles are substantially prevented from moving in the radially inward direction, and in another position the squeeze handles can move freely in the radially inward direction.