Milton Roy LMI P1 Instruction Manual

LMI ELECTRONIC DOSING PUMPS

Code : P1

Basic manual
Instruction supplement
Spare parts list for drive assembly
Declaration « CE » of conformity
List of « Technical assistance » and « spare parts » departments

07/98

INSTRUCTION MANUAL

FOR INSTALLATION,
OPERATING,
AND MAINTENANCE.

LMI ELECTRONIC DOSING PUMPS

Diaphragm liquid end

Basic manual

This manual should be made available to the person responsible for installation,

operating and maintenance.

Date : 02/2012 Ref : 160.0101

.001 Rev. D

Replaces Rev. 0 09/98

LMI, Doseur à membrane, L001, Rev.B, 1098

CONTENTS

I – DESCRIPTION

I – 1. Unpacking
I – 2. Description
I – 3. Accessories
I – 4. Precautions

II – INSTALLATION

II – 1. Hydraulic installation
II – 2. Electrical installation

III – START UP

III – 1. Priming
III – 2. Output adjustment controls
III – 3. Calibration
III – 4. Volumetric calibration in external mode
III – 5. Pressure control

IV – MAINTENANCE

IV – 1. Spare parts replacements
IV – 2. Checking pump for proper zeroing (stroke knob)
IV – 3. Troubleshooting
IV – 4. EPU Resistance chart

0.0 Precautions

The pump described here may be used for the dosing of liquid products in connection with the applications set out in this
manual.
The following precautions should be taken when working with LMI metering pumps. Please read this section carefully prior to
installation.

Storage precautions

- Storage period of less than six months:

The product should preferably be stored in its original packing and be protected from bad weather.

- Storage period of more than six months:

Store the pump in its original packing. It should be stored covered by a heat-sealing plastic cover and desiccant bags
should be used (quantity dependent on volume and planned storage period). Store away from the influence of bad
weather.

Protective Clothing

ALWAYS wear protective clothing, face shield, safety glasses and gloves when working on or near your metering
pump. Additional precautions should be taken depending on the solution being pumped. Refer to MSDS precautions
from your solution supplier.

Water Pre-Prime

All LMI pumps are pre-primed with water when shipped from the factory. If your solution is not compatible with water,
disassemble the Pump Head Assembly. Thoroughly dry the pump head, valves, seal rings, balls and Liquifram™
(diaphragm). Reassemble head assembly tightening screws in a crisscross pattern. Refill the pump head with the
solution to be pumped before priming the pump. (This will aid in priming.)

Solution Compatibility

Determine if the materials of construction included in the liquid handling portion of your pump are adequate for the
solution (chemical) to be pumped. Always refer to the solution supplier and the LMI Chemical Resistance Chart for
compatibility of your specific LMI metering pump. Contact your local MRE distributor for further information.

Tubing Connections

Inlet and outlet tubing or pipe sizes must not be reduced. Outlet tubing size must not be increased. Make certain that
any tubing is SECURELY ATTACHED to fittings prior to start-up (see Section ., Tubing Connections). ALWAYS use
LMI supplied tubing with your pump, as the tubing is specifically designed for use with the pump fittings. It is
recommended that all tubing be shielded and secure to prevent possible injury in case of rupture or accidental damage.
If tubing is exposed to sunlight, black UV resistant tubing should be installed. Check tubing frequently for cracks and
replace as necessary.

Vinyl Tubing

Your carton may contain a roll of clear vinyl tubing; this is only for connection to the return line of the FastPrime™ Head
and must not be used as discharge tubing.

Connectors

All connectors shall be tightened by hand. An additional turn of 1/8 to 1/4 might be necessary to ensure tightness. Any
excessive tightening or using a toolmight damage the connecting device and the seals or the liquid end.

All LMI pumps have straight screw machine threads on the head and fittings and are sealed by the O-rings. DO NOT
use Teflon® tape or pipe dope to seal threads. Teflon® Tape may only be used on the 1/2" NPT thread side of the
Injection Check Valve, the stainless steel liquid end connections, or if piping is directly connected to the pipe threads of
the suction or discharge fittings.

Installation

Always comply with local regulations and requirements. Always adhere to your local plumbing codes and requirements.
Be sure installation does not constitute a cross connection. Check local plumbing codes for guidelines. Milton Roy
Europe is not responsible for improper installations.

Back Pressure/Anti-syphon valve

If you are pumping downhill or into low or no pressure system, a back pressure/antisyphon device such as LMI’s Four­Function Valve should be installed to prevent over pumping or siphoning. Contact your distributor for further
information..

Electrical Connections

WARNING: To reduce the risk of electrical shock, the metering pump must be plugged into a properly grounded
grounding-type receptacle with ratings conforming to the data on the pump nameplate.. Do not use adapters! All wiring

must conform to local electrical codes. If the supply cord is damaged, it must be replaced by the manufacturer, stocking
distributor, or authorized repair centre in order to avoid a hazard..

Environment

The ambient temperature must be less than 50°C. Avoid direct exposure to sunlight. The pump must be accessible and
situated in a ventilated room.

Noise

The noise level of your equipment is less than 65 dB (A).

Maintenance

CAUTION - ELECTRICAL RISK:
Before performing any maintenance work, deactivate the pump and make sure that all electrical connections are
disconnected.
CAUTION: : DISCHARGE LINE DEPRESSURIZATION
If you are pumping downhill or into low or no pressure system, a back pressure / antisyphon device such as LMI’s
Four-Function Valve should be installed to prevent over pumping or siphoning. Contact your LMI distributor for further
information.
CAUTION: CHEMICAL AND INFLAMMABLE PRODUCTS:
Take all the precautions necessary when performing work on equipment that is dosing chemical and/or inflammable
products. Contact your local Milton Roy Europe distributor for more information.

Earth leakage protection

CAUTION:
It is essential to install an earth leakage circuit breaker calibrated on the basis of the electrical values noted on the
equipment plate.

Cleaning

Make sure that your equipment is clean at all times and that no external items interfere with its functioning.

I - 1

LMI, Doseur à membrane, L001, Rev.B, 1098

PART I – DESCRIPTION

This manual addresses the installation, maintenance and troubleshooting procedures for electronic dosing pumps. An
instruction supplement and a liquid end sheet complete this manual.

Please read them carefully before installing your pump.

I – 1. UNPACKING

The packaging must be carefully
examined on receipt in order to
ensure that the contents have not
sustained any obvious damage.

The carton contains the items
necessary to a proper installation.

I - 2 - DESCRIPTION

Your pump consists of two parts :

1. The drive assembly

2. The liquid handling assembly

The pump code which appears on
the packaging and on the
identification plate consists of two
codes according to drive assembly
type and liquid handling assembly
type.

Dosing pump Function valve * Ceramic weight*

Tubing Injection check valve* Foot valve*

* depending on model

DRIVE

A753

LIQUID HANDLING ASSY

352SM

I - 2

LMI, Doseur à membrane, L001, Rev.B, 1098

Output adjustment controls

According to pump type, output adjustment controls are
available :

• Stroke adjustment
Each pump is equipped with a stroke adjustment.
Stroke control provides adjustment of percent of
maximum diaphragm travel.

Note : For B & C Series, stroke adjustment only when
pump is running.

• Speed adjustment
A1, A7, B1, B7, C1, C7, J5, P1 Series pumps are
equipped with a speed adjustment. Speed control
provides adjustment of the percent of maximum strokes
per minute.

• Pressure control adjustment
B7 and C7 Series Pumps are equipped with a pressure
control adjustment. Pressure control provides the
adjustment of the pump’s pressure capability and power
consumption, reducing heat, pipe shock and pulsation.

For more details, refer to Instruction supplement

I - 3. ACCESSORIES

4-Function valve

This accessory is supplied as standard equipment or as
option. The functions are :

1. Anti-syphon (automatic)

Prevents syphoning when pumping downhill or into a
vacuum.

2. Back pressure (automatic)

Supply approximately 1,7 bar back pressure to prevent
over pumping when little or no system back pressure is
present.

3. Priming (manual)

Prime your pump while it is connected to a pressurized
line.

4. Line depressurization (manual)

By pulling both knobs (yellow and black) the discharge
line will drain back to your supply tank.

3-Function valve

This accessory is supplied as standard equipment or as
option (according to Series 300 models). The functions
are :

1. Priming (manual)

Prime your pump while it is connected to a pressurized
line.

2. Pressure relief (automatic)

Provides protection against excessive system pressure.

3. Line depressurization (manual)

By opening the relief valve, the discharge line will
depressurize without having loosen or disconnect
discharge tubing.

Bleed/4-Function valve

This accessory is supplied as standard equipment or as
option (according to Series 300 models). The functions
are :

1. Anti-syphon (automatic)
Prevents syphoning when pumping downhill or
into a vacuum.

2. Back pressure (automatic)
Supply approximately 1,7 bar back pressure to
prevent over pumping when little or no system
back pressure is present.

3. Continuous bleed (automatic)
This valve is designed to permit an adjustable,
continuous bleed or degasing or entrapped
vapors. It is ideal for pumping small volumes of
solutions having low vapor pressures.

4. Line depressurization (manual)
By opening bleed port, the discharge lline will
depressurize, without having to loosen tubing or
fittings.

Foot valve

(Accessory available according to the model)
The foot valve makes easier priming and keep the

pump primed in suction lift applications.
The strainer prevents sediment to pass through and

valves to clog.

Injection check valveCanne d’injection

The injection check valve prevents backflow from a
treated line.

I – 4. PRECAUTIONS

Always wear protective clothing, face shield, safety
glasses and gloves when working on or near your
metering pump.

All LMI pumps are shipped from factory with water
in pump head to make easier priming.

If the pump head is empty, refill it with water or
solution compatible with pumped solution before
starting up the pump (see note on the Liquid End
Sheet).

Solution compatibility

Verify that the liquid handling components are
compatible with the pumped solution (refer to Liquid
End Sheet).

Make certain that all tubing is securely attached to
fittings prior to start-up.

Tubing supplied allows to match with pump
maximum specifications.

All fittings should be hand tightened.Overtightening
or use of a pipe wrench can cause damage to the
fittings, causing the pump to lose prime or not
function.

All LMI pumps have straight ¾’’- 16N or 7/8 ’’- 14N
or 1"- 12 N machine threads on the head and
fittings.

The seal rings prevent leaks. Do not use Teflon tape
between fittings and pump head.

II - 1

LMI, Doseur à membrane, L001, Rev.B, 1098

PART II – INSTALLATION

II – 1. HYDRAULIC INSTALLATION

The pump can be mounted in one of two ways :

• Flooded suction (ideal installation).

• Suction lift – when suction lift is less than 1,5 m for

solutions having a specific gravity of water. Your
LMI metering pump must be mounted so that the
suction and discharge valves are vertical.

Flooded suction

The pump is mounted at the base of the storage tank.
This installation is the most trouble-free, and is

recommended for very low outputs, solutions that
gasify, and high viscosity solutions. (Install shut off
valve on the tank).

1 Solution tank 9 Vent
4 Pump 10 Tee
8 Injection check valve

Fig. 2.1a : Flooded suction

Suction lift

• Wall bracket mount. The pump
may be mounted directly above the
solution tank. A pump mounted in
this manner allows for easy
changing of solution tank.

1 Solution tank
4 Pump
6 Pressure line
8 Injection check valve

10 Tee

A 50 mm space for

sediment accumulation

Fig. 2.1b : Suction lift