Many of the early automatic machines had coin-in-the-slot facilities and were installed in the basement laundry rooms of apartment houses. Modern machines From 1990 onwards new features and designs of washing machines became available making washing more cost-effective.
Converting on a Speed Queen/Huebsch MD2 series washer
It might be time to upgrade your old coin slides to coin drops. As vend prices in coin laundries rise, it is much easier for customers to drop coins in a coin drop that counts down, than it is to fill a coin slide with quarters multiple times. Below are detailed instructions on how to convert an MD2 series Huebsch/Speed Queen washer from a coin slide to a coin drop.
Tools Needed
- Flat Head Screw Driver
- Phillips Screwdriver
- 5/16 Nut Driver
- 7/16 Wrench or Socket Wrench
- Wire strippers / crimper
- Coin Drop Kit Part#F200003000P which includes a coin drop, power supply, and power harness
- Plastic Anchors Part#F432001
Steps
- Make sure the power is turned off
- Remove the old coin slide with the 5/16 nut driver
- Remove coin mechanism with a flat head screwdriver
- Remove wires to terminals #33, #38, #39, #40
- Attach the power supply to the plastic anchors on the side wall or the bottom of the control tray. If the plastic anchors are not installed, you will need to install them…just snap them in.
- Attach the power supply wire harness to the terminals:
- Wire #340 gets connected to terminal 40
- Wire #339 gets connected to terminal 39
- Wire #338 gets connected to terminal 38
- Wire #334 gets connected to terminal 34 and coin blocker
- Wire #333 gets connected to terminal 33
- Wire #3cb gets connected to coin blocker
- Noise reducer (little black box w/wire connections) from terminal 34 to terminal 40
- Make a jumper wire and connect it between terminal 25 and terminal 40 to bring power to the display. (The jumper needs to be a 14 gauge piece of wire that is about 5” long with a connector at each end)
- Make sure all connections are properly secured
- Install coin drop and make sure the set screw is securely fastened
- Connect the red ribbon between the coin counter board and power supply and power supply to wire harness
- Turn power on and check to see if the coin drop works properly.
How do they recognize the money you insert?
Coin-operated vending machines work by detecting inserted coins through physical and electronic mechanisms. When a coin is inserted into the vendor’s slot, it travels down a specially angled chute. It is angled to generate a set amount of momentum for the travelling coin.
The currency then passes through an electromagnetic field generated by an electromagnet that surrounds the chute, generating an electronic signature according to its chemical composition. If this signature doesn’t match one of the vendor’s computer’s known set of signatures (the different coin values) the coin is not logged by the system, but rejected.
Once through the electromagnetic field, the travelling coin must then cross the reject chute to be accepted by the vendor. To do this, the coin must be travelling at the correct momentum as dictated by the chute, with coins travelling too slowly or quickly stopped with physical barriers. This ensures that only official, known currency is accepted – coins which are too light, too heavy or too big or small are physically stopped, as they do not travel down the chute at the pre-designed speed.
How Much Are Washing Machines
If coins pass both checks, they are logged and accepted by the vending machine and function accordingly; if either check fails, however, the coin is rejected and sent down a second chute for collection.