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OPERATING

INSTRUCTIONS

Multi-Function Timers
840-T, 840-TJ & 840-TF
Series

355 East Kehoe Blvd. 

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 Carol Stream, IL  60188

Tel: (630) 462-8800 

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 Fax:  (630) 462-1460

Toll Free:  1-800-PCASTLE

TABLE OF CONTENTS

PAGE

Installation ..................................................................... 2

Programming .............................................................. 2-3

Operation ....................................................................... 4

Cleaning ........................................................................ 4

Parts List ....................................................................... 5

Exploded View .............................................................. 5

Troubleshooting ............................................................ 6

Wiring Diagrams ........................................................... 6

Pictured Model 840-T8

Prince Castle’s second generation of Merlin Timers
feature a new slim design which gives you mounting
flexibility. The 840 Series Timers are designed so
each channel can be programmed independently,
and used simultaneously.  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

840-T Series

840-TJ Series

120 Volts

100 Volts

50-60 Hz

50/60 Hz

840-TF Series

220-240 Volts

50/60 Hz

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

840-507rev

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Printed in USA 

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