Peak Scientific MS Bench SCI 1 User manual

MS Bench G SCI 1 Service Manual Rev 3 RSID 3025 EN 20/11/20

MS Bench G SCI 1

Service Manual

Contents

Change History 3

How to use this Manual 3

Safety Notices 4

Symbols 4

Safety Notice to Users 4

Safely Isolated Condition 5

Safe State After Repair 6

Principle of Operation 8

On Demand Gas 8

System Description 8

Service Requirements 9

Service Schedule 9

Product Overview 10

PCB & Electrical Panel Layout 11

Compressor Inlet Filter Element Replacement 12

Twin Filter Element Replacement 13

RAC Filter Element Replacement 14

Dryer Filter Element Replacement 15

Compressor Replacement 16

Pressure Switch Overview 17

Pneumatic Diagram 18

Electrical Schematics 19

Service Flow Charts 25

Cleaning 30

Troubleshooting 31

Page 2

Page 3

Change History

Rev Comment Name Date

1 Initial Release L. Couttie 06/06/2019

2 CSA Feedback Updates L. Couttie 20/06/2019

3 Power Cord Update L. Couttie 20/11/2020

How to use this Manual

This manual is intended for Field Service Engineers and technically competent end

users and has been written as a reference document where you can skip to the relevant

information.

Users can refer to the contents page to ﬁnd the relevant information.

Please review each of the following sections carefully.

Thank you for selecting Peak Scientiﬁc to meet your gas generation needs, and should

you require any further assistance or support please do not hesitate to contact Peak

Scientiﬁc or the Peak Partner from which you purchased your generator.

WARNING

Page 4

CAUTION

WARNING

Safety Notices

Peak Scientiﬁc Instruments cannot anticipate every possible circumstance which may

represent a potential hazard. The warnings detailed within this manual refer to the most

likely potential hazards, but by deﬁnition cannot be all inclusive. If the user employs an

operating procedure, item of equipment or a method of working which is not speciﬁcal-

ly recommended by Peak Scientiﬁc, the user must ensure that the equipment will not

be damaged or become hazardous to persons or property.

Symbols

This manual uses the following symbols to highlight speciﬁc areas important to the safe

and proper use of the generator.

A WARNING notice denotes a hazard. It calls attention to an operating procedure,

process or similar, which if not correctly performed or adhered to, could cause

personal injury or in the worst case death. Do not proceed beyond a WARNING

notice until the indicated conditions are fully understood or met.

A CAUTION notice denotes a hazard. It calls attention to an operating procedure,

process or similar, which if not correctly performed or adhered to, could cause

damage to the generator or the application. Do not proceed beyond a CAUTION

notice until the indicated conditions are fully understood or met.

Caution, risk of electric shock. Ensure the generator has been safely isolated before

proceeding.

Safety Notice to Users

These instructions must be read thoroughly and understood before

installation and operation of your Peak Generator. Use of the generator

in a manner not speciﬁed by Peak Scientiﬁc MAY impair the SAFETY

provided by the equipment.

When handling, operating or carrying out any maintenance, personnel

must employ safe engineering practices and observe all relevant local

health and safety requirements and regulations. The attention of UK

users is drawn to the Health and Safety at Work Act 1974, and the

Institute of Electrical Engineers regulations.

If the equipment is used in a manner not speciﬁed by the manufacturer,

the protection provided by the equipment may be impaired.

Page 5

Safely Isolated Condition

Deﬁnition: The unit is in a Safely Isolated Condition when it is disconnected from its

application, fully de-pressurised and isolated from the electrical supply. Directions for

isolating the generator are shown below.

Failure to place the generator in a safely isolated condition when

instructed to do so may lead to personal injuryor injury to others and

even death.

Isolating the generator:

a) Switch o the unit.

b) Unplug the unit from the mains supply and remove the power cord from the rear

of the unit.

c) Open all gas outlet ports until gas ceases to escape.

d) Disconnect from the application.

WARNING

Page 6

Safe State After Repair

To guarantee the generator is in a safe state after a repair, please ensure the following

conditions are met;

• The electricity cable has been correctly refitted.

The mains cable should be plugged into the IEC power inlet located on the rear

panel of the generator. This unit is classiﬁed as SAFETY CLASS 1. THIS UNIT MUST

BE EARTHED.

• The system builds pressure correctly.

With the outlet ports closed, pressure will start to build in the internal storage tanks.

In normal operation, both compressors will cycle alternately. Please refer to the ﬂow

chart section of this manual for more detail.

Page 7

Technical Specification

MS Bench G SCI 1

Environment

MS Bench G SCI 1

Minimum Operating Ambient Temperature 5°C (41°F)

Maximum Operating Ambient Temperature 30°C (86°F)

Maximum Altitude 3000 m

Maximum Relative Humidity 80% Non-Condensing

Minimum Storage Temperature* -20°C (-4°F)

Maximum Storage Temperature* 60°C (140°F)

*NOTE – When taken out of storage the Generator should be allowed to acclimatize at room temperature for a mini-

mum of 3 hours before operation.

Generator Outlets

Curtain Maximum Flow^ 19 L/min @ 4.48 bar (0.670 cfm @ 65 psi)

Source Maximum Flow^ 26 L/min @ 6.89 bar (0.918 cfm @ 100 psi)

Exhaust Maximum Flow^ 25 L/min @ 4.13 bar (0.882 cfm @ 60 psi)

Particles <0.01µm

Phthalates NONE

Suspended Liquids NONE

Gas Outlets 3 x ¼” BSPP

Drain Outlet 1 x ¼” BSPP

^NOTE – These performance characteristics are valid only when paired with an approved Sciex application. Please refer

to current application matrix for a list of supported products.

Electrical Requirements

Voltage 220 - 240v ±10%

Frequency 50/60 Hz

Current 6 Amps

Input Connection C20 Plug

Power Cord C19 socket to local connection (10A minimum)

Pollution Degree 2

Installation / Over Voltage Category II

General

Dimensions cm (inches) WxDxH 91.4 x 78.7 x 76.2 (36 x 31 x 30)

Generator Weight Kg (lbs) 160 (352)

Shipping Weight Kg (lbs) 175 (385)

Page 8

Principle of Operation

On Demand Gas

When the application requires a gas ﬂow, the generator produces gas on demand.

The generator will continue to supply the gas demand, whilst the application is in a

'Standby' mode the generator will still produce a low ﬂow of gas. As soon as a demand

is detected from the application, the generator will again match the applications

requirements.

System Description

The generator consists of two compressors; the combined compressed air output

provides the requirements for both nitrogen and air demands; the compressed air is

stored in a reservoir prior to being divided to produce the nitrogen and air gases.

To produce nitrogen (CURTAIN) gas, a division of air is passed through the membrane

(see below for membrane process). The nitrogen is then stored in a dedicated reservoir

until needed. The air division is split once more between the desired outputs - ‘SOURCE’

and ‘EXHAUST’. Finally, all output product is passed through an RAC ﬁlter prior to

delivery to the application.

Once the designated upper reservoir setting has been achieved, the compressors will

switch OFF until the lower pressure setting is reached. At this point the compressors will

switch back ON and begin the cycle once again; this is referred to as the ‘Pressure Cycle’.

The generator output ﬂow is completely controlled by the demand of the customer’s

application; the generator will produce up-to the maximum stated and will not exceed

this.

The membranes utilize separation technology to create Nitrogen. The membrane consists

of a bundle of hollow ﬁbers, when compressed air is passed through the ﬁbers the

oxygen in the air permeates through the walls of the ﬁber giving a high purity Nitrogen

output. The air drier membrane works in a similar manner, where the moisture in the air

permeates through the wall of the ﬁbre to give a Dry Air output.

Page 9

Service Requirements

Service Schedule

Purchase Interval Component Visit

12 Months MS Bench G SCI 1 Annual Maintenance Kit* www.peakscientiﬁc.com/ordering

4 Years MS Bench G SCI 1 Year 4 Service Kit* www.peakscientiﬁc.com/ordering

* Please quote your generator serial number when ordering your Maintenance Kit to

ensure selection of the appropriate kit for your generator.

Note: Only Peak approved components should be used.

Page 9

Page 10

Product Overview

PCB

Membrane

RAC Filters

Twin Filters

Compressors

Valves

Power Inlet & Switch

Regulators

Dryer Filter

Capacitors

Valves

Reservoir Tanks

Air Inlet Filter

Electrical Panel

Outlet Panel

Curtain, Source & Exhaust

Pressure Gauges

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