Operating Modes; Installation; Electrical Connection - Viking ESFR Technical Data Manual

March 7, 2008
The Viking Corporation, 210 N Industrial Park Road, Hastings MI 49058
Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269-945-4495 Email: techsvcs@vikingcorp.com
Nut: Brass, nickel plated
Wrench Flats: 30 mm
Ordering Information:
Part Numbers: Switch - 13057 (Must be ordered for Switch #5)
C. Operating Modes
Run Mode (normal operating mode):
When the supply voltage has been applied, the unit is in the Run mode. It monitors and switch-
es the output according to the set parameters. The display shows the current system pressure.
The red LED indicates the switching state of the output.
Display Mode (indication of parameters and the set parameter values):
When the "Mode/Enter" button is pressed for a short time, the unit passes to the Display
mode. Internally it remains in the operating mode. The parameter names are scrolled with
each pressing of the "Mode/Enter" button. When the "Set" button is pressed for a short time,
the corresponding parameter value is displayed for approximately 15 seconds. Then the unit
returns to the Run mode.
Locking / Unlocking
The units are electronically locked to prevent unwanted adjustment of the set parameters;
Press (in Run mode) both setting buttons for 10 seconds. As soon as the indication goes out,
the unit is locked or unlocked. Units are delivered from the factory in the locked state. With the
unit in the locked state, "Loc" is indicated briefly when you try to change parameter values.
D. Installation
Before installing or removing a pressure switch, make sure that no pressure is applied
to the system.
1. When installing the switch, apply Teflon tape sealant to the male threads only.
2. Install the Supervisory Pressure Switch in the ¼" NPT connection. Use a wrench applied
to the wrench flats to tighten the unit. Do not over-tighten. Mount the switch in the upright
position (threaded connection down).
3. To wire the unit proceed as follows:
a. De-energize electrical circuits involved.
b. Connect cable (Viking Part No. 13213) to the ½" conduit opening provided.
c. Connect electrical circuitry for the signalling device and auxiliary equipment being con-
trolled by the switch. Refer to the wiring diagrams. Wire all devices to national and local
codes and requirements of the Authority Having Jurisdiction.
4. Energize the circuits.

1. Electrical Connection:

The unit must only be connected by a certified electrician. National and international regula-
tions for the installation of electrical equipment must be observed. Caution: For the output
circuit, the same protective measures as for the supply circuit must be taken. A 115 VAC
(60 HZ) or 220 VAC (50 HZ) electrical power supply is to be provided directly to the switch
when used for APCS. Alternately, connect to the CS-1 panel. When used for system con-
trol, direct connection to the switch must be made with Viking Cable Part No. 13231.
TECHNICAL DATA
Cable - 13231
ESFR PRE-PRIMED SINGLE
INTERLOCK PREACTION
COLD STORAGE SYSTEM
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