This article is also available in:

Alliance ACA - PRO300 / Universal Harness with feedback

NOTE: If this machine is a card ready machine, this machine type may not have the harness for coins at plug H11. The tech will need to acquire the Alliance coin harness for the specified machine. Alternately, The Airwallet Pro400 and Airwallet Alliance ACA/Quantum harness can be used instead of the factory Alliance harness.

Recommended dashboard setup

Fixed ➜ Pulse operated
Pulse length: 80-100 ms., pulse repetition: Variable based on price of machine, busy signal: Low

Recommended machine setup

If the DRYER is giving 99 minutes, you need to make sure if you are using the coin 2 connection or Airwallet harness, that you set the dEn2 to 000.25. By default the machines are programmed to $1.00.

Wiring diagram

No.	PRO310–330	PRO340	Wiring diagram
1	Wire no. 1	Wire no. 1	Line
2	Wire no. 2	Wire no. 2	Neutral
3	Wire no. 3	Wire no. 3	Terminal H11-5
4	Wire no. 4	Wire no. 4	Not in use
5	Wire no. 5 (moved to port 7)	Wire no. 8	Terminal H3-4
6	Wire no. 6	Wire no. 6	Terminal H3-5
7	Wire no. 7	Wire no. 7	Terminal H11-4
8	No wire 8	Wire no. 5	Not in use

Attention:

For Airwallet devices with 7 wires ONLY! 8 wire units and harnesses DO NOT APPLY

If you use the BUSY signal from the machine:

PRO310–330: move wire no. 5 from port 10 to port 7 inside the Airwallet unit. PRO340: no move needed, use wire no. 8 instead.

NO COIN DROP INSTALLED

This setup assumes NO COIN DROP IS INSTALLED!

COIN DROP INSTALLED

You will need to bypass the coin drop directly if you are keeping the coin drop to pulse the machine correctly. This modification should be done on the machine harness directly, NOT the coin drop harness to avoid confusion if replacing the coin drop.

Tags - Speed queen, Huebsch, Ipso, Primus

Updated on: 11/11/2026

Was this article helpful?

Thank you!