Xylem MM 413F Replacement Head Mechanism With Switch Ass Manual de usuario descargar pdf

INSTRUCTION MANUAL

MM-413F

Head Mechanism

with Switch Assembly

Head Mechanism

without Switch Assembly

Replacement head mechanisms can be

installed without disturbing existing equalizing

connections or disassembly of components,

making repair simple and easy.

Replacement Head Mechanism

With Switch Assembly:

93-HD, 94-HD

93-M-HD, 94-M-HD

93-7B-HD, 94-7B-HD

93-7B-M-HD, 94-7B-M-HD

Without Switch Assembly:

93-HDLS 94-HDLS

• Before using this product read and understand instructions.

• Save these instructions for future reference.

• All work must be performed by qualified personnel trained in the proper application, instal-

lation, and maintenance of plumbing, steam, and electrical equipment and/or systems in

accordance with all applicable codes and ordinances.

• To prevent serious burns, the boiler must be cooled to 80˚F (27˚C) and the pressure must be

0 psi (0 bar) before servicing.

• To prevent electrical shock, turn off the electrical power before making electrical connections.

• This low water cut-off must be installed in series with all other limit and operating controls

installed on the boiler. After installation, check for proper operation of all of the limit and

operating controls, before leaving the site.

• We recommend that secondary (redundant) Low Water Cut-Off controls be installed on all

steam boilers with heat input greater than 400,000 BTU/hour or operating above 15 psi

steam pressure. At least two controls should be connected in series with the burner

control circuit to provide safety redundancy protection should the boiler experience a

low-water condition. Moreover, at each annual outage, the low water cutoffs should be

dismantled, inspected, cleaned, and checked for proper calibration and performance.

• To prevent serious personal injury from steam blow down, connect a drain pipe to the control

opening to avoid exposure to steam discharge.

• To prevent a fire, do not exceed the switch contact rating.

Failure to follow this warning could cause property damage, personal injury or death.

UTIO

WARNING

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1 - Replacement Head Mechanism

INSTRUCTION MANUAL MM-413FHead Mechanism with Switch AssemblyHead Mechanism without Switch AssemblyReplacement head mechanisms can beinstalled without

Pagina 2 - OPERATION

2Electrical RatingsModels with 5 or 5-M SwitchSwitch RatingsBurner Valve120 VAC345 VA 0 - 135 ohms @ 24 VAC240 VACModels with 7B or 7B-M SwitchApproxi

Pagina 3 - INSTALLATION –

3OFFONSTEP 1 - PreparationINSTALLATION –TOOLS NEEDED:One (1) flathead screw driver, one (1) scraper andone (1) 9/16" socket box or open end wrenc

Pagina 4 - CONTROL BODY

4a. Clean and scrape flange surface on control body.b. Fold the flaps of the cardboard insert together to form the handle. Remove the Head Mechanism A

Pagina 5 - FLOAT STOP PLATE

592-68 FLANGE GASKET150-14 FLANGE GASKETFLOAT STOP PLATEc. Slide flange gasket (150-14 for Series 93/193 units and 92-68 for Series 94/194 units) over

Pagina 6 - TERMINAL

6EFg. Using a screwdriver and pipe wrench remove float block dowel (E) and plug (F).Install pipe plug included with unit in opening.f. Using a torque

Pagina 7 - TROUBLESHOOTING

7STEP 6 - Testinga. Turn on power to boiler and pump circuits.With the boiler empty, the pump should turn on (5 or 5-M switch models) or the valve ope

Pagina 8 - MAINTENANCE

Xylem Inc. 8200 N. Austin Avenue Morton Grove, Illinois 60053 Phone: (847) 966-3700 Fax: (847) 965-8379www.xyleminc.com/brands/mcdonnellmillerMcDonnel

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Xylem MM 413F Replacement Head Mechanism With Switch Ass Manual de usuario

Busca en linea o descarga Manual de usuario para Zapatillas Xylem MM 413F Replacement Head Mechanism With Switch Ass. Xylem MM 413F Replacement Head Mechanism With Switch Assembly: 93-HD, 93-M-HD, 93-7B-HD, 93-7B-M-HD, 94-HD 94-M-HD 94-7B-HD 94-7B-M-HD User Manual Manual de usuario

Indice de contenidos

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