Calculation
| Press hours of waiting per year | 15 minutes x 2,200 mold changes / 60 = 550 |
| What those hours are worth when orders fill them | 550 hours x $55 x 70 percent filled = $21,200 |
| Less the carts' yearly upkeep | 6 carts x $150 per year = $900 |
| What fixing it could save per year | $21,200 - $900 = $20,300 |
Assumptions
Waiting at each mold change
15 minutes
Mold changes per year
2,200
Carts for mold changes
6
Price of one cart with its hoses and tools
$1,500
Yearly upkeep of each cart
$150
Water fittings for one press and its molds
$600
Value of one more running press hour
$55 per hour
Share of freed press hours that orders fill
70 percent
Cost of one process technician hour
$52 per hour