Acme MRS-7 Installation Manual

DISPOSER CONTROL CENTER

Installation Manual

Model MRS

www.insinkerator.com

The Danger signal indicates an immediately hazardous situation which, if not
avoided, will result in death or serious injury.

The Warning signal alerts you to potential hazards or unsafe practices which,
if not avoided, could result in severe personal injury or death.

The Caution signal alerts you to hazards of unsafe practices which, if not avoided,
may result in minor personal injury or property damage.

Please be certain that the person who installs or uses this appliance carefully reads
and understands the Safety Instructions contained in this manual.

Part No. 14376 - September 2007

Table of Contents

Introduction/Features

Introduction ..................................................................................... 3

Features .......................................................................................... 3

Mounting the Control Center .......................................................... 3

Plumbing Connections ................................................................................. 4

Electrical Connections

Electrical Connections ....................................................................

Time Delay Relay .............................................................................

Operating Instructions/Troubleshooting

Operating Instructions .................................................................... 6

Troubleshooting .............................................................................. 6

Wiring Diagrams

Model No. MRS-6 (120V, 1 phase, 1/2-2 HP) ................................. 7

Model No. MRS-7 (208-230V, 1 phase, 1/2-2 HP) .......................... 8

Model No. MRS-8 (208-230V, 3 phase, 1/2-3 HP) .......................... 9

Model No. MRS-9 (380/460V, 3 phase, 1/2-7.5 HP) ..................... 10

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Warranty

FOODSERVICE DISPOSER CONTROL CENTER LIMITED WARRANTY

InSinkErator Foodservice Disposer Control Centers are warranted against defects in material and workmanship for
one year from the date of installation. The warranty includes parts and labor, provided the service is performed by an
InSinkErator Factory Authorized Service Center. This warranty does not apply if failure is due to: faulty or improper

electrical installation, faulty or improper plumbing installation, product abuse or misuse, or accidental damage.

InSinkErator Foodservice disposer accessories are included in this warranty only if they are included in the original
disposer purchase package.

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Features/Mounting the Control Center

INTRODUCTION

The MRS Control Center is UL® and CUL® approved for
use with InSinkErator Foodservice Disposers. See
Table 1 for approved disposer and control center
combinations. The control center operates the disposer.
Its main functions are:

• To start and stop the disposer.

• To reverse the direction of the disposer motor.

• To start the water flow to the disposer.

Model Waste Disposer Model

MRS-6
MRS-7

MRS-8 SS50-27, SS75-28, SS100-29, SS125-26,

MRS-9 SS50-27, SS75-28, SS100-29, SS125-26,

Table 1. Approved Disposer and Control Center Combinations

Model Part No. Voltage Phase HP

MRS-6 14368 120V 1 1/2-2

MRS-7 14368A 208-230V 1 1/2-2

MRS-8 14368B 208-230V 3 1/2-3

MRS-9 14368C 380/460V 3 1/2-7.5

Table 2. Electrical Specifications

SS50-26, SS75-27, SS100-28, SS125-25,

SS150-34, SS150-38, SS200-27, SS200-31

SS150-36, SS150-39, SS200-29,

SS200-32, SS300-25, SS300-27

SS150-36, SS150-39, SS200-29,

SS200-32, SS300-25, SS300-27, SS500-28,

SS500-30, SS750-13, SS750-15

MOUNTING THE CONTROL CENTER

Use the flanges at the back of the control center
enclosure and only mount panel in the upright vertical
position (door hinge is on the left). See Figure 1.

Locate control center within sight of disposer per local
codes. Locate any remote control station within sight of
disposer per local codes.

If box is mounted to the sink table, recess the box so
that the buttons do not extend beyond the table's edge.

Figure 1. Control Center Dimensions

FEATURES

MANUAL REVERSE

The disposer motor direction is controlled by a push
button switch.

ENCLOSURE

NEMA 4 construction.

PUSH BUTTON OPERATION

PROPERTY DAMAGE

Use of more than two solenoid valves will affect the
overall function of the MRS control center. Extra
solenoid valves will cause a reduction in voltage and
solenoid actuation will not occur.

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