Alpha SE41-2722 Installation & Operation Manual

Your Power Solutions Partner

SE41-20 Multipurpose OSP Enclosure

Installation & Operation Manual

Part # 0290002-J0

Effective: 11/2013

member of The Group

™

SE41-20

Multipurpose OSP Enclosure Series

For technical support, contact Alpha Technologies:

Canada and USA: 1-888-462-7487

International: +1-604-436-5547

Copyright

gies.

No part of this documentation shall be reproduced, stored in a retrieval system, translated, transcribed, or trans-

mitted in any form or by any means manual, electric, electronic, electromechanical, chemical, optical, or other-

wise without prior explicit written permission from Alpha Technologies.

This document, the software it describes, and the information and know-how they contain constitute the propri-

etary, conﬁdential and valuable trade secret information of Alpha Technologies, and may not be used for any

unauthorized purpose, or disclosed to others without the prior written permission of Alpha Technologies.

The material contained in this document is for information only and is subject to change without notice. While

reasonable efforts have been made in the preparation of this document to assure its accuracy, Alpha Technolo-

gies assumes no liability resulting from errors or omissions in this document, or from the use of the information

contained herein. Alpha Technologies reserves the right to make changes in the product design without reserva-

tion and without notiﬁcation to its users.

Alpha shall not be held liable for any damage or injury involving its enclosures, power

supplies, generators, batteries, or other hardware if used or operated in any manner or

subject to any condition inconsistent with its intended purpose, or if installed or oper-

ated in an unapproved manner, or improperly maintained.

Photographs contained in this manual are for illustrative purposes only. These photo-

graphs may not match your installation.

NOTE:

Operator is cautioned to review the drawings and illustrations contained in this manual

before proceeding. If there are questions regarding the safe operation of this powering

system, contact Alpha Technologies or your nearest Alpha representative.

NOTE:

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Table of Contents

1. Safety ....................................................................................................................................5

1.1 Safety Symbols .......................................................................................................................... 5

1.2 General Warning and Cautions .................................................................................................. 5

1.3 Electrical Safety ......................................................................................................................... 6

1.4 Battery Safety ............................................................................................................................ 6

2. Overview ...............................................................................................................................7

2.1 Introduction ................................................................................................................................ 7

2.2 Specications for SE41-20 ......................................................................................................... 8

3. Features and Benets ...........................................................................................................9

3.1 AC and DC Power Options ........................................................................................................ 9

3.2 AC Load Center Options .......................................................................................................... 12

3.3 Transient Voltage Surge Suppressor (TVSS) Option ............................................................... 12

3.4 Generator Receptacle and Transfer Switch ............................................................................. 12

3.5 Battery Options ........................................................................................................................ 13

3.6 Enclosure Cooling and Heating ............................................................................................... 13

3.7 Security .................................................................................................................................... 13

3.8 Summary of Options ................................................................................................................ 14

4. Site Evaluation and Pre-Installation ....................................................................................15

4.1 Site Selection ........................................................................................................................... 15

4.2 Tools Required ......................................................................................................................... 15

5. Installation ...........................................................................................................................16

5.1 Safety Precautions ................................................................................................................... 16

5.2 Plinth Mount Kit for Concrete Pad (0370139-001) ................................................................... 16

5.3 Wall Mounting the Enclosure ................................................................................................... 19

5.4 Pole Mounting the Enclosure ................................................................................................... 20

6. Wiring ..................................................................................................................................22

6.1 Grounding the Enclosure ......................................................................................................... 22

6.2 AC Input Wiring to the Load Center ......................................................................................... 23

6.3 Installation with Cordex HP 48-1.2kW Rectier System .......................................................... 24

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6.4 Installation with a Cordex 300W Rectier Shelf ....................................................................... 28

6.5 Installation with an FXM UPS .................................................................................................. 31

7. Maintenance .......................................................................................................................38

8. Warranty and Service Information ......................................................................................39

8.1 Technical Support .................................................................................................................... 39

8.2 Warranty ................................................................................................................................... 39

8.3 Return of Material ................................................................................................................... 39

8.4 Service Centers ....................................................................................................................... 39

9. Acronyms and Denitions ...................................................................................................40

10. Certication .......................................................................................................................41

List of Figures

Figure 1 — Alpha SE41-20 interior view (CXRF 1.2 kW power option) ............................................ 7

Figure 2 — Cordex 1.2 kW shelf with CXCI controller and distribution ............................................. 9

Figure 3 — Cordex 300 W HP shelf ................................................................................................ 10

Figure 4 — Alpha FXM 650 (top) and FXM 1100 (bottom) ..............................................................11

Figure 5 — Universal Automatic Transfer Switch ............................................................................. 11

Figure 7 — Generator receptacle ................................................................................................... 12

Figure 6 — SE41-20 with AC load center and TVSS options ......................................................... 12

Figure 8 — Battery tray option ........................................................................................................ 13

Figure 9 — Plinth template for mounting bolts ................................................................................ 16

Figure 10 — Location of plinth anchoring hardware ....................................................................... 17

Figure 11 — Mounting the enclosure to the plinth .......................................................................... 18

Figure 12 — Battery tray screws ..................................................................................................... 18

Figure 13 — Preparing enclosure for wall mounting ....................................................................... 19

Figure 14 — Bolting the pole mount rail to the cabinet brackets .................................................... 20

Figure 16 — Attaching SE41-20 cabinet to the pole mount rail/bracket ......................................... 21

Figure 17 — Enclosure MGB and chassis ground .......................................................................... 22

Figure 18 — DC Distribution ........................................................................................................... 24

Figure 19 — Enclosure alarm block wiring ..................................................................................... 26

Figure 20 — Battery breakers, 1.2kW rectier shelf ....................................................................... 27

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Figure 21 — Cordex 300W distribution ........................................................................................... 28

Figure 22 — Battery and probe connections .................................................................................. 29

Figure 23 — Battery connections .................................................................................................... 29

Figure 24 — Assembling brackets from rack mount kit ................................................................... 32

Figure 25 — Connecting AC Input and Load Cables ...................................................................... 33

Figure 26 — UATS factory wiring .................................................................................................... 34

Figure 27 — FXM wiring from UATS ............................................................................................... 34

Figure 28 — Fan connection to FXM C6 relay ................................................................................ 35

Figure 29 — FXM ............................................................................................................................ 36

Figure 30 — FXM External battery wiring for 48 Vdc string ............................................................ 36

5

0290002-J0 Rev D

1. Safety

SAVE THESE INSTRUCTIONS: This manual contains important safety instructions that

must be followed during the installation, servicing, and maintenance of the product. Keep it in a safe place. Re-

view the drawings and illustrations contained in this manual before proceeding. If there are any questions regard-

ing the safe installation or operation of this product, contact Alpha Technologies or the nearest Alpha representa-

tive.

1.1 Safety Symbols

To reduce the risk of injury or death, and to ensure the continued safe operation of this product, the following

symbols have been placed throughout this manual. Where these symbols appear, use extra care and attention.

The use of ATTENTION indicates specic regulatory/code requirements that may affect the

placement of equipment and /or installation procedures.

WARNING!

WARNING presents safety information to PREVENT INJURY OR DEATH to personnel.

Warnings are indicated by a shock hazard icon, the word WARNING, and a rule beneath

which the information appears.

WARNING!

You must read and understand the following warnings before installing the enclosure

and its component. Failure to do so could result in personal injury or death.

CAUTION!

CAUTION indicates safety information intended to PREVENT DAMAGE to material or equipment.

Cautions are designated with a yellow warning triangle, the word CAUTION, and a rule beneath

which the information appears.

NOTE:

A NOTE provides additional information to help complete a specic task or procedure. Notes

are designated with a checkmark, the word NOTE, and a rule beneath which the information ap-

pears

HOT!

The use of HOT presents safety information to PREVENT BURNS to the technician or

user.

1.2 General Warning and Cautions

• Read and follow all instructions included in this manual.

• Only trained personnel are qualiﬁed to install or replace this equipment and its components.

• Use proper lifting techniques whenever handling equipment, parts, or batteries.

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1.3 Electrical Safety

Before working with any live battery or power system, follow these precautions:

a. Remove all metallic jewelry, such as watches, rings, metal rimmed glasses, or necklaces.

b. Wear safety glasses with side shields at all times during the installation.

c. Use OSHA approved insulated hand tools. Do not rest tools on top of batteries.

WARNING!

Lethal voltages are present within the power system. Always assume that an electrical

connection or conductor is energized. Check the circuit with a voltmeter with respect to the

grounded portion of the enclosure (both AC and DC) before performing any installation or

removal procedure.

WARNING!

Follow battery manufacturer’s safety recommendations when working around battery systems.

Do not smoke or introduce an open ame when batteries (especially vented batteries) are charg-

ing. When charging, batteries vent hydrogen gas, which can explode.

WARNING!

Hazardous voltages and/or energy levels can be present at the input of power systems. The DC

output from rectiers and batteries, though not dangerous in voltage, has a high short-circuit

current capacity that may cause severe burns and electrical arcing.

• Do not work alone under hazardous conditions.

• A licensed electrician is required to install permanently wired equipment. Input voltages can range up to

240 Vac. Ensure that the utility power is disconnected and locked out before performing any installation

or removal procedure.

• Ensure that no liquids or wet clothes come into contact with internal components.

• Hazardous electrically live parts inside this unit are energized from the batteries even when the AC input

power is disconnected.

• The enclosure which contains the DC or AC power system along with customer installed radios must

remain locked at all times, except when authorized service personnel are present.

• Always assume electrical connections or conductors are live. Turn off all circuit breakers and double-

check with a voltmeter before performing installation or maintenance.

• Place a warning label on the utility panel to warn emergency personnel that a reserve battery source is

present which will power the loads in a power outage condition or if the AC disconnect breaker is turned

off.

• At high ambient temperature conditions, the internal temperature can be hot so use caution when touch-

ing the equipment.

1.4 Battery Safety

• Never transport an enclosure with batteries installed. Batteries must ONLY be installed after the enclo-

sure has been securely set in place at its permanent installation location. Transporting the unit with bat-

teries installed may cause a short circuit, ﬁre, explosion, and/or damage to the battery pack, enclosure

and installed equipment.

• Servicing and connection of batteries must be performed by, or under the direct supervision of, person-

nel knowledgeable of batteries and the required safety precautions.

• Batteries contain or emit chemicals known to cause cancer and birth defects or other reproductive harm.

Battery post terminals and related accessories contain lead and lead compounds. Wash your hands

after handling batteries.

• Batteries are hazardous to the environment and should be disposed at a recycling facility. Consult the bat-

tery manufacturer for recommended local authorized recyclers.

7

0290002-J0 Rev D

2. Overview

2.1 Introduction

The Alpha SE41-20 is a NEMA 3R multipurpose outdoor enclosure that has an externally mounted load center.

The SE41-20 can be conﬁgured to support any of the following system options:

• AC or DC power system

• Generator inlet and manual transfer switch

• TVSS

• One or two battery trays with or without battery heater mats

• Thermal management options: fan, heat exchanger or air conditioner

• Enclosure heater

The NEMA 3R rated enclosure is designed to protect its internal electrical equipment from harsh outdoor environ-

ments. With a selection of thermal management options, the SE41-20 multipurpose OSP enclosure series can be

used for a wide variety of applications.

An optional factory-installed generator connector allows critical loads to be powered even if the utility power is

lost and the backup batteries become discharged through extended use.

Door mounted fan

Battery tray

Adjustable 19/23"

equipment rails

(front-to-back)

Convenience

receptacle

Lifting ears

Insulation

Master Ground

Bar (MGB)

1.2kW rectier shelf

Figure 1 — Alpha SE41-20 interior view (CXRF 1.2 kW power option)

0290002-J0 Rev D

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2.2 Speciﬁcations for SE41-20

AC Input

Utility supply: 120/240V, 100A maximum, 60Hz, 1PH, 3W+PE (AC load center)

Generator supply (optional): 120/240V, 30A maximum, 60Hz, 1PH, 3W+PE (backup receptacle)

Internal equipment: 120/240V, 57A maximum, 60Hz, 1PH (CXRF 48-1.2kW rectiﬁer shelf)

Output

DC: 42 - 58V (48V nominal), 4.8kW maximum (CXRF 48-1.2kW rectiﬁer shelf)

AC:

Convenience receptacle: 120V, 20A, 60Hz, 1PH

FXM650, FXM1100, FXM2000: 120V, 60Hz, 1PH

Mechanical

Dimensions (H x W x D): 1051mm x 701mm x 508mm (41.4in x 27.6in x 20in)

Weight:

Enclosure (empty): 52kg (115lbs)

AlphaCell FT 195 GXL battery: 34.52kg (76.29lb)

AlphaCell 85 GXL: 18kg (39.6lb)

Mounting: Plinth/Pad/Wall/Pole

Construction: High strength corrosion resistant aluminum

Finish: Powder coat

Insulation: Standard

Equipment rails: 23" (19" to 23" adapter plates available as option)

Equipment space: 20RU

Cable entrance: Knockouts located on sides, bottom and rear of enclosure

Hinge type: 3-position lift-off hinge

Door prop: Wind-stop with automatic lock

Door latch: 3 point latch with L-handle for padlocking

Installation access: Full front access as well as rear access with a removable gland plate

Solar shield: Included

HVAC

Cooling: • Thermostat-controlled ﬁltered fan cooling OR

• Air conditioner OR

• Heat exchanger (with 1.2kw system or 300W system)

Heating: Integrated with air conditioner

Environmental

Operating temperature: -40 to 46°C (-40 to 115°F)

Storage temperature: -40 to 85°C (-40 to 185°F)

Agency compliance

NEMA rating: 3R

CSA: C22.2 No. 60950

9

0290002-J0 Rev D

Figure 2 — Cordex 1.2 kW shelf with CXCI controller and distribution

3. Features and Benefits

3.1 AC and DC Power Options

The following power options are available with the SE41-20

• CXRF 1.2 kW (0290002-701)

• Cordex 300 HP (0290002-702)

• FXM 650 (0290002-703)

• FXM 1100/2000 (0290002-704)

3.1.1 CXRF 1.2kW (model 030-834-20)

Figure 2 shows the 1.2kW option for AC to DC power conversion. The 48-1.2kW rectiﬁer system is designed for

front access to the following DC components:

• Controller shelf I/O

• CXCM1 (Cordex) controller

• Up to four hot-swappable 1.2kW rectiﬁers

• Four circuit breakers: 2 battery breakers and 2 load breakers

• 10-position GMT fuse block

Circuit breakers

CB1, CB2 load

CB3, CB4 battery

GMT fuse block

Rectiers

CXCM1Controller I/O

Each fan-cooled 1.2kW rectiﬁer provides 25 A @ 48 Vdc. A compact CXCM1 (Cordex) controller, which is inte-

grated into the rectiﬁer shelf, has LED indicator lights for status and alarms and an LCD screen that displays volt-

age and current. The controller includes a web server interface that provides an easy set up via local or remote

IP access using a standard Internet Explorer browser. (Refer to the communication settings chapter in the Cordex

manual.)

Integrated logging captures data from multiple AC/DC voltages, load/battery currents, and cell voltages/tempera-

tures. Common applications of the logging include power system details, thermal performance of outdoor enclo-

sures, battery cell speciﬁcs, and mains variations captured by an AC voltage watchdog.

The shelf incorporates a distribution module for DC breaker/fuse output as well as battery connections. The mod-

ule includes support for up to four AM plug-in breakers and ten GMT fuse positions. Two battery-landing posi-

tions, a 125A battery shunt, and a site ground are also provided.

0290002-J0 Rev D

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3.1.2 Cordex HP 48-300W

The 48-300W rectiﬁer system is a stand-alone version that provides a control unit with the following features:

• USB and Ethernet port connectors

• Front signal connection card: communication I/O card for digital inputs, alarm signals, temperature sensor

and CAN Bus

• Status LEDs for controller, LVD, system and battery

• Battery temperature sensor connection

• Three 300W rectiﬁers

Figure 3 — Cordex 300 W HP shelf

Refer to the Cordex HP 48V-300W manual, part number 0300072-J0, for a detailed description.

11

0290002-J0 Rev D

3.1.3 FXM 650, 1100, 2000

The Alpha FXM uninterruptible power supply (UPS) modules provide clean, reliable power control and man-

agement as part of a complete UPS solution. Each model is available in either North American (120V/60Hz) or

International (230V/50Hz) variants. Automatic Voltage Regulation (AVR) provides power stability in unpredictable

environments and constant voltage during variable power conditions. Temperature compensated battery charg-

ing protects batteries from overcharging at extreme temperatures, extending battery life. Event and alarm logging

with time and date stamping simpliﬁes and accelerates troubleshooting.

3.1.4 UATS Option

The Universal Automatic Transfer Switch (UATS) is an optional add-on switching unit speciﬁcally designed for

the FXM UPS family (FXM 650, 1100 and 2000). These switching units provide power and/or bypass capacity

(automatic or manual) so that the operator can safely disconnect the UPS from line or generator power for easy

removal and servicing.

In bypass mode, the loads are directly connected to the line or generator power without any conditioning. De-

pending on the use of one and/or the other, the UATS allows the use of up to 3 different back-up sources (line,

batteries and generator). Refer to the UATS Installation Manual (Alpha P/N 020-165-B0) for details.

Figure 4 — Alpha FXM 650 (top) and FXM 1100 (bottom)

Figure 5 — Universal Automatic Transfer Switch

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3.2 AC Load Center Options

A circuit breaker AC load center, is mounted on the left side of the enclo-

sure.

One version of the load center comes equipped with a main breaker as

well as feeder breakers for the optional AC devices in the cabinet such

as GFCI, TVSS, generator, air conditioner, etc. The AC circuit breakers

for the load center are provided by Alpha depending on the choice of

system options. Refer to schematic drawing 0290002-05 at the end of

this manual for breaker conﬁgurations for all options.

Figure 6 — SE41-20 with AC load center

and TVSS options

3.3 Transient Voltage Surge Suppressor (TVSS) Option

An AC surge suppression device rated for 120V/240VAC is available as a list option. It is mounted on the outside

of the load center (see Figure 6).

3.4 Generator Receptacle and Transfer Switch

CAUTION!

When using the generator inlet receptacle, the system loading must be limited to not exceed

the generator supply 30A rated circuit breaker.

TVSS

AC load

center

Figure 7 — Generator receptacle

An optional factory-installed generator connector allows

critical loads to be powered if the utility power is lost and

the backup batteries become discharged through extended

use. Figure 7 shows the receptacle which is installed below

the AC load center. The receptacle is rated for 30A for use

with the mains breaker.

The transfer of power from AC Mains to Generator is

achieved through a manual transfer switch based on a

mechanical interlock.

Refer to schematic drawing 0290002-05 at the end of this

manual for the wiring speciﬁc to your conﬁguration.

13

0290002-J0 Rev D

3.6 Enclosure Cooling and Heating

Flexible thermal management options allow the enclosure to be matched to load and environmental parameters.

3.5 Battery Options

The SE41-20 can hold one or two battery trays

They are sized to ﬁt AlphaCell 195 GXL-FT

(110Ah) or the AlphaCell 85 GXL (50Ah) batter-

ies (or equivalent).

Battery heater mats are also available as an

option. The heater mats plug into the GFCI

receptacles.

Figure 8 — Battery tray option

3.7 Security

Opening the front door activates an interlock switch which is wired to an intrusion alarm. The interlock can be

disengaged by pulling the plunger out.

The front door can be secured with a padlock.

Heat exchanger option Air conditioned optionFan cooled option

0290002-J0 Rev D

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3.8 Summary of Options

Power options

Cordex CXRF-HP 48-1.2kW 2 RU 19" shelf system, up to 4800W

output power, CXCM1 controller and GMT fuse distribution

0290002-701

Cordex HP 48-300W 0290002-702

FXM 650 0290002-703

FXM 1100 0290002-704

FXM 2000 0290002-705

No power 0290002-706

AC load center options

With main lugs 0290002-720

With main breaker 0290002-721

No load center (with no power option) 0290002-722

Transfer switch

UATS + RPA 0290002-710

Battery wire kits

1.2kW with 1 battery tray 0290002-753

1.2kW with 2 battery trays 0290002-754

300HP with 1 battery tray 0290002-755

FXM 48V with 1 battery tray 0290002-756

FXM 48V with 2 battery trays 0290002-757

Transient Voltage Surge Suppressor

0290002-740

Generator receptacle

Generator receptacle, for use with mains breaker 0290002-751

Battery tray options

1 tray w/heater mat 0290002-760

1 tray no heater mat 0290002-761

2 trays w/heater mat 0290002-762

2 trays no heater mat 0290002-763

Cooling option

Fan cooled 0290002-730

Air conditioner 0290002-731

Heat exchanger (with 1.2kW system or 300W system) 0290002-732

Enclosure heater

0290002-770

Mounting options

Plinth 0370139-001

Pole mount 0370140-001

Wall mount 0370141-001

Isolation pad 6480053-001

15

0290002-J0 Rev D

4. Site Evaluation and Pre-Installation

4.1 Site Selection

Consider the following before selecting a mounting site:

• The Alpha SE41-20 enclosure is designed for front and rear access. Only front access is required for mainte-

nance.

• Avoid areas that may be subjected to hot air exhaust from nearby equipment or buildings.

• Find out if your intended area is subjected to architectural controls or environmental restrictions.

• Avoid areas that are prone to ﬂooding

The SE41-20 outdoor power enclosure has been designed for the following mounting options:

• Plinth, mounted on an at-grade concrete slab (0370139-001)

• Pole mount (0370140-001)

• Wall mount (0370141-001

• Pad mount spacer (6480053-001)

4.2 Tools Required

Various insulated tools are essential for the installation. Use this list as a guide:

• Battery lifting apparatus if required

• Electric drill with hammer action, 1/2" capacity

• Various crimping tools and dies to match lugs used in installation

• Load bank of sufﬁcient capacity to load largest rectiﬁer to its current limit

• Digital voltmeter equipped with test leads

• Cable cutters

• Torque wrench: 1/4" drive, 0 - 150 in-lb.

• Torque wrench: 3/8" drive, 0 - 100 ft-lb.

• Insulating canvases as required (2' x 2', 1' x 1', 3' x 3', etc.)

• Various insulated hand tools including:

- Combination wrenches - Ratchet and socket set

- Various screwdrivers - Electricians knife

• Battery safety spill kit required for wet cells only:

- Protective clothing - Face shields

- Gloves - Baking soda

- Eye wash equipment

• Cutters and wire strippers (#14 to #22 AWG) [2.5 to 0.34 mm²].

0290002-J0 Rev D

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5. Installation

Only qualiﬁed personnel should install and connect the power components within the Alpha power system. For

the battery installation, refer primarily to the manufacturer’s manual.

5.1 Safety Precautions

Refer to the Safety section near the front of this manual.

5.2 Plinth Mount Kit for Concrete Pad (0370139-001)

5. 2.1 Concrete slab (for reference only)

A fully equipped power enclosure weighs with two shelves of AlphaCell 195 GXL-FT batteries weighs approxi-

mately 760lb. The mounting site must be built in accordance with local building practices and codes.

Concrete pad installation requiring seismic compliance requires approval by the appropriate engineering disci-

pline, e.g., civil or structural. Cast-in-place or pre-cast concrete slabs can be used.

Use the template in Figure 9 to place the anchor bolts. Follow the speciﬁc recommendations from the fastener

manufacturer to ensure that the securing device achieves its full structural capacity.

1.00

4 PL

2.96

REF

21.57

27.50 REF

17.48

1.26

REF

1.26

20.00

REF

Figure 9 — Plinth template for mounting bolts

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0290002-J0 Rev D

Figure 10 — Location of plinth anchoring hardware

5.2.3 Mounting the Enclosure to the Plinth

CAUTION!

Do not hoist/lift the enclosure with batteries installed.

1. Remove the protective covering from the system. The doors are designed to be locked with a padlock and

are secured with tie-wraps for shipping. Cut the tie-wraps and open the doors.

2. Inspect the packing slip to verify that you have received all the equipment that you ordered.

• All documentation is packed inside the equipment compartment.

• Inspect all moving parts, hardware, connectors, and other equipment.

3. Report any damage to the shipper and Alpha Technologies.

5.2.2 Plinth Mounting

1. Place the plinth in position over the anchor holes.

2. Install the anchoring hardware for each anchor FINGER TIGHT.

3. Check that the plinth is level front-to-back and side-to-side.

4. Add shims as needed under one or two of the corners of the plinth, placing the shims as close as possible to

the bolts.

5. Once the plinth is level, tighten all bolts to the appropriate torque.

Recommended torque values

1/4" 8.8 ft-lbs

3/8" 32.5 ft-lbs

1/2" 73 ft-lbs

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5.2.4 Mounting the Enclosure to the Plinth

1. Unbolt the enclosure from the shipping pallet.

2. Lift the enclosure onto the plinth.

3. Remove the bottom battery tray to access the mounting holes at the edges

of the enclosure–three screws per side as shown in Figure 12.

Figure 11 — Mounting the enclosure to the plinth

4. Secure the enclosure to the plinth with the fourteen M6x 16 screws and rubber washers included with the

plinth. Figure 9 shows the location of all 14 mounting holes.

5. Replace the battery tray.

Figure 12 — Battery tray screws

4 of the 14 mounting holes

around the base of the enclosure

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Alpha SE41-2722 Installation & Operation Manual

Alpha SE41-2722 Installation & Operation Manual

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