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OPERATING

INSTRUCTIONS

Single Function Timers
Model No. 740-T, 740-TJ &
740-TF Series

355 East Kehoe Blvd. 

!

 Carol Stream, IL  60188

Tel: (630) 462-8800 

!

 Fax:  (630) 462-1460

Toll Free:  1-800-PCASTLE

TABLE OF CONTENTS

PAGE

Installation ..................................................................... 2
Programming ................................................................. 2
Operation ....................................................................... 3
Cleaning ........................................................................ 4
Parts List ....................................................................... 4
Exploded View .............................................................. 5
Troubleshooting ............................................................ 5
Wiring Diagrams ........................................................... 6

Prince Castle’s second generation of Merlin Timers
feature a new slim design which gives you mounting
flexibility. The 740 Series Timers are designed so
each channel can be programmed independently,
and used simultaneously.  The timers are simple to
program and simple to use.  The push of a button
activates each channel, and a alarm and multi-
colored flashing channel buttons alert the operator
when timing is complete.

 

ELECTRICAL

740-TSeries

740-TJ Series

120 Volts

100 Volts

50-60 Hz

50/60 Hz

740-TF Series

220-240 Volts
50/60 Hz

Model 740-T8

This product is warranted to be free from defects in material 
and/or workmanship for a period of 1 year from date of original 
installation, not to exceed 18 months from the date of 
manufacture.
Any component which proves to be faulty in material and/or 
workmanship will be replaced or repaired (at the option of 
Prince Castle, Inc.) without cost to the customer for parts and 
labor. This equipment is portable; charges for on-location 
service (e.g., trip charges, mileage) are not included in the 
provisions of this warranty.
This warranty is subject to the following exceptions/conditions:
•  Use of any non-genuine Prince Castle parts voids this 

warranty.

•  All labor to be performed during regular work hours. 

Overtime premium (the incremental amount) will be charged 
to the customer.

•  Damage caused by carelessness, neglect and/or abuse 

(e.g., dropping, tampering or altering parts, equipment 
damaged in shipment, by fire, flood or an act of God) is not 
covered under this warranty.

•  All problems due to operation at voltages other than that 

specified on equipment nameplates are not covered by this 
warranty. Conversion to correct voltage is the customer’s 
responsibility.

•  This equipment must be serviced by Prince Castle 

Authorized Service Agency or a Prince Castle Service 
Technician during the warranty period.

LIMITED WARRANTY

740-517revB

Printed in USA 3/06 

©

 2006 

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