TECHNICAL UPDATES

Main power connection for Micro Pro and Ultra Micro Warewash Dispensers

Will you be installing a Micro Pro unit soon? If so, remember the "MP" and "UMP" require 3 separate power connections for “probe” operation.

• Main or constant power
• Rinse signal power
• Detergent signal power

Or

One set of connections for a “probeless” door machine. In this bullitin we will look at probe installations only.

The purpose of the "Main" power connection is to provide power to the unit. The "MP" and "UMP" are built with one step-down transformer for the "Main" or "Constant" power connection. The transformer will accept a 115/208/220 volt power source. Connect the transformer to a power source that is "on" constantly, or when the dishmachine is "on".

For Example: You are installing to a Hobart C-44 machine. You ask, what electrical contacts do I use to connect the dispenser properly? The popular C-44 is a conveyor machine with a control box that contains a magnetic contactor switch for the recirculating pump. Inside you’ll find terminals marked T1 and T3 for the recirculating pump that are "hot" when the machine is turned "on" and "dead" when the machine is "off". Connect the Main Power transformer to these two terminals. The C-44 provides "DPS" and "RPS" terminals for chemical dispenser signals. Connect the detergent signal to DPS and the rinse signal to the RPS terminals.

Other common contacts on dishmachines to connect for constant power are the following:

• L1 and L2 contacts (main power contacts for dishmachine)
• Main switch on dishmachine
• Wall outlet