METRON M100, M200, M220, M300, M400 Series Manual

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MANUAL
ELECTRIC FIRE PUMP CONTROLLERS

FOR USE WITH THE MANUAL START FIRE PUMP CONTROLLER
SERIES M100, M200 AND M220 AND THE COMBINED AUTOMATIC -MANUAL
START FIRE PUMP CONTROLLERS SERIES M300, M400 AND M420

TABLE OF CONTENTS

PART I G ENERAL DESCRIPTION...................................................................................................PAGE 2

PART II FUNCTIONS..........................................................................................................................PAGE 2

PART III INSTALLATION...................................................................................................................PAGE 3

PART IV INITIAL INSTALLATION START-UP PROCEDURE ....................................................PAGE 3

PART V OPERATION OF CONTROLLER........................................................................................PAGE 5

PART VI SEQUENCE OF OPERATION..............................................................................................PAGE 6

PART VII NOMENCLATURE...............................................................................................................PAGE 8

Note: This manual is subject to change without prior notice.

METRON, INC.
1505 West Third Avenue
Denver, Colorado 80223

Telephone: [phone] Fax: [phone]

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PART I: GENERAL DESCRIPTION

The basic function of the Fire Pump Controller is to start the pump motor to maintain the water system pressure. This
may be accomplished in automatic controllers, Series M300, M400 and M420, by automatically starting the pump
motor upon drop in pressure in the water main or from a number of other demand signals. Manual controllers, Series
M100, M200 and M220 must be started manually while the automatic controller can be started automatically or
manually. All can be started by remote manual means, but cannot be stopped remotely. The automatic controller can
be set to stop automatically or require manual stop after an automatic start.

PART II: FUNCTIONS

A. Automatic Starting From:

1. Drop in water line pressure

2. Deluge Valve operation, Option D

3. Loss of remote alarm power, Option P

B. Alarm and Signals:

1. Remote indication of pump operation: One (1) set of normally open (N.O.) and normally closed

(N.C.) contacts located in the controller operate when the pump is running.

2. Loss of power to the controller: One (1) Single Pole Double Throw (SPDT) contact located in the

controller operates for loss of power, loss of phase, or low voltage.

3. Phase reversal of power to controller: One (1) SPDT contact located in the controller operates for

phase reversal of the power to the controller.

4. Motor current exceeds 125% of normal : One (1) SPDT contact located in the controller operates

when the motor current exceeds 125% of normal.

5. Power On pilot light on controller: This light is on whenever both the isolation switch and circuit

breaker of the controller are closed indicating that power is available and the controller is set for
operation.

6. Phase reversal pilot light: This pilot light is on whenever there is a phase reversal of the power to

the controller.

7. Engine Lockout (Option E) : When an engine drive system is used as a backup a N.O. auxiliary

contact on the motor contactor is provided to prevent the engine from starting if the electric motor
is running.

8. Electric Motor Lockout (Option M) : The electric motor lockout is generally used in conjunction

with engine lockout above. If the engine is running due to a power outage, or other reasons, the
electric motor can be locked out until the engine is stopped.

C. Sequential Starting (Option S): This optional feature is provided for multiple fire pump installations. This

provision times the start of the pump motors by a preset time interval so that all motors do not come on at
once.

D. Principal Components of Controller:

1.

Isolation Switch

2.

Circuit Breaker

3.

Overcurrent Monitor

4.

Contactor

5.

Pressure Switch

The incoming line is connected directly to the isolation switch. From there the power is fed to the circuit

breaker and then to the contactor. Both the isolation switch and circuit breaker are normally closed. The
contactor is operated either manually or automatically to start the motor.

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PART III: INSTALLATION

The Fire Pump Controller has been assembled and wired a t the factory with the highest workmanship standards. All
wiring and functions have been thoroughly tested to assure correct operation when properly installed. Before
operating the controller, perform the Initial Installation Start-Up Procedure, Part IV.

The cubicle should be well grounded according to local standards. Make sure that all applicable external control
wires are connected to appropriate terminals as shown in External Hookup drawing. If the controller is supplied with
Option "D" Deluge Valv e Start, and it is not being used the terminals for this must be jumpered (See External Hookup
drawing). Failure to make the proper connections will cause the controller to malfunction. Connection from the
contactor to the motor may be done after the tes t procedure is completed. The contact ratings of the remote alarm
contacts of the controller are shown on the controller Schematic drawing.

After installation has been completed, perform the Initial Installation Start-Up Procedure, Part IV before operating the
controller.

PART IV: INITIAL INSTALLATION START-UP PROCEDURE

A. General: All but the final test can be made with the motor disconnected. This will eliminate the need for

starting and stopping the motor several times during the test procedure. If the output connections from the
contactor to the motor were made on initial installation, disconnect them for the first part of the Initial
Installation Start -Up Procedure. Refer to External Hookup drawing for nomenclature of all controls. Refer to
schematic for location of contacts for remote alarms.

The controls and their functions as follows:

1. Isolation Switch: This switch is connected in the circuit between the line and the circuit breaker.

Its function is to disconnect the main power to the controller.

2. Circuit Breaker: The circuit breaker is located between the motor contactor and the isolation

switch. Its function is to protect the line from damage due to a short in the load.

3. Overcurrent Monitor: The overcurrent monitor (1OCM) senses the motor current through a set of

current transformers (CTs) in the controller. When the motor current exceeds 125% of normal a
yellow LED illuminates on the monitor and a set of dry contacts change state. When the motor
current exceeds 300% the monitor begins timing based on how much the current exceeds 300% of
normal and a red LED begins flashing. The greater the current the shorter the time period such that
at 600% of normal the monitor activates in approximately 14 seconds. When the monitor activates
(at the end of timing), a set of normally open contacts close which energize the shunt trip in the
circuit breaker causing it to trip.

4. Emergency Start Lever: This co ntrol is used to start the fire pump in case of any malfunction

within the control circuits.

5. Start Button: The pushbutton starts the pump motor by exciting the contactor coil so that it closes.

6. Stop Button: This pushbutton stops the pump motor by opening the contactor coil circuit, thereby

disconnecting the current to the pump motor.

B. Series M100 Manual Non-Automatic:

1. Close isolation switch and measure voltage at output of isolation switch. Voltage should be the
same as incoming line voltage.

2. Close circuit breaker and measure voltage of input of motor contactor. Voltage should be the same
as in Step 1. Power On pilot light on controller should be on.

3. Push manual start button; motor contactor should close. Measure volt age at output of contactor.
It should be the same as in Step 1.

4. Push stop button. Motor contactor should be open.