
P/N 06-791-6 (Rev. 0 / July, 2015)
704 SW 10th Street, P.O. Box 610, Blue Springs, Missouri 64013-0610 U.S.A. ●Phone: (816) 229-3405 ●www.fike.com
CAUTION Use care when using the MANUAL (MAN) position of the control switch to avoid causing system Over
Pressure. Use extra caution with positive displacement, regenerative or other pumps capable of
generating high output pressures until or unless the presents and status of a pressure relief valve is
determined.
4.5. Automatic (Pressure) Control
In the AUTO position, control power is routed to the Pressure Switch PS. The Pressure Switch is normally closed (closes
on falling pressure). When the pressure is below the Turn-On setting of the Pressure Switch, its contacts close to
energize the Motor Contactor coil to start the motor.
In the event of excessive motor current or sustained locked rotor contacts, the thermal element of the Overload Relay
will open pilot Contacts OLC to de-energize the Motor Contactor Coil to open the Motor Contactor contacts and de-
energize the motor. After the motor and Overload Relay cool down, the Overload Relay is manually reset to re-enable
the controller and motor.
Option "1" - Control Transformer: When Option "1" is supplied, control power is supplied by a Control Power
Transformer (CPT). Its primary is supplied by two control line fuses F2 and F3. The secondary output of the
transformer is protected by secondary fuse F1. When used, control power is 115 Vac (110 - 120 Vac) rather than line
voltage. The motor contactor coil and any other relay coils are rated at 110 Vac to 120 Vac in this case.
Option "2" - Minimum Run Timer: This option is used to prevent excessively frequent pump starting. The option
consists of the Minimum Run Time Delay Relay TM. It is equipped with a Timer head TMD as well as instantaneous
contacts TMA. The timer head is equipped with an adjustment dial. The standard range of adjustment is zero to 180
seconds. The Minimum Run Timer does not operate with the selector switch in the MANUAL position.
Option "3" - Line (Mains) Fuses: Three extra line fuses are furnished to provide protection from short circuit or high
current faults. (See Installation Instructions - Protection, for proper sizing).
5. REPLACEMENT PARTS LIST
Disconnect Switch, 600 Vac, 30/40 Amp (Internal Switch only)
Disconnect Switch Handle Operator only, (30 thru 100 Amp)
Auto-Off-Manual Selector Switch
Auto-Off-Manual Selector Switch Contact
Pressure Switch (Mercoid No. DA-31-1-R.9) 10-300 P.S.I.
Minimum Run Time Delay Relay/Timer Head Ass'y, 120 Vac (Opt. 2)
Minimum Run Time Delay Relay/Timer Head Ass'y, 208 Vac " (1)
Minimum Run Time Delay Relay/Timer Head Ass'y, 230 Vac " (1)
Minimum Run Time Delay Relay/Timer Head Ass'y, 380 Vac " (1)
Minimum Run Time Delay Relay/Timer Head Ass'y, 460 Vac " (1)
Control Power Transformer, 50 VA, 208/240/460 Vac (Opt. 1)
Control Power Transformer, 50 VA, 380/575 Vac (Opt. 1)
Fuse Holder, 3 Pole, 600 Volt, 30 Amp
Fuse Holder, 1 pole, 250 Vac, 30 Amp (Opt.1)
Fuse Holder, 2 pole, 250 Vac, 30 Amp (Opt.1)
Notes:
1) Line voltage Motor Contactor coils are used only when Option "1" is Not provided.
2) One or more renewal parts such as fuses, heaters, contacts, and etc. may be obtained from local electrical
distributor(s).