Sterlco 4300 Series Stainless Steel Condensate Pumps - Manual (Page 9)

Page 9 of 10
9038-893 9038-893
SERVICE SERVICE
BULLETIN BULLETIN
Class 9038 Type CG Series A
MECHANICAL ALTERNATOR
CAUTION: Switches are shipped with a bracket attached to the mounting plate.
This bracket prevents the float and rod from moving in the tank during shipment.
When installing the system, this clearly marked shipping bracket must be
removed and discarded.
APPLICATIONS: The Class 9038 Type C Mechanical Alternators serve to
open and close an electric circuit by an upward and downward float movement.
The forces are applied by means of a float operating between different fluid
levels. The action is such that two switch units are alternated on successive
cycles. If the liquid level continues to rise or fall with one pump in operation, the
lever will continue to travel to a further position at which point the “second”
switch will be operated, throwing the stand-by pump across the line.
MOUNTING: The Class 9038 Type C Mechanical Alternators are mounted
directly to the tank by means of the 2 ½” NPT threaded fitting (D). Before
screwing this fitting into the tank, loosen Nut (C) so that the fitting (D) is free to
rotate in the switch bracket. Tighten the fitting (D) so that there will be no leak
past the threads. Then revolve the switch case until it is horizontal and tighten
Nut (C).
PRESSURE: In the use of the CG Alternators, the pressure limit within the
closed tank must not exceed 100 psi.
ELECTRICAL RATINGS (HORSEPOWER)
Voltage Single Phase AC Polyphase AC DC
115 …………………………………….. 2 HP ………………………..3 HP ……………………………… ½ HP
230 …………………………………….. 3 HP ………………………..5 HP ……………………………… ½ HP
460/575 ……………………………….. ………………………..1 HP ………………………………
32 ……………………………………… ……………………….. ……………………………… ¼ HP
Control Circuit Rating: A600
REVERSE OPERATION: Form R controls are arranged for reverse action. In this form, the contacts will open on increase in liquid level. It is not
recommended that a change be made in the field from standard to reverse operation or vice versa.
MANUAL TRANSFER (LEAD-LAG) SELECTOR: Form N3 switches have a manually engaged selector which voids alternation. The pump
selected to lead always comes on first. With selector disengaged, the unit reverts to normal alternation.
MOTOR PROTECTION: A control of this type does not afford motor protection. However, it is quite frequently used as a pilot to operate a starter
providing this desirable feature. The Square D Company manufactures a complete line of motor protective devices, information on which will be
sent upon request.
ENCLOSURE RATING: NEMA 1 ENCLOSURES ARE INTENDED FOR INDOOR USE PRIMARILY TO PROVIDE A DEGREE OF PROTECTION
AGAINST CONTACT WITH THE ENCLOSED EQUIPMENT IN LOCATIONS WHERE UNUSUAL SERVICE CONDITIONS DO NOT EXIST.
WARNING: TO AVOID SHOCK HAZARD, DISCONNECT ALL POWER BEFORE INSTALLING OR SERVICING DEVICE.
ADJUSTMENTS: Switches are shipped from the factory set for a specified float travel. Reasonable adjustment of float travel can be made in the
field by moving adjusting strips (7) which are held in place by Screws (A) and (B). Loosening Screw (B) and moving upper adjusting strip (7) will
affect the upper limit of float travel only. Loosening Screw (A) and moving lower adjusting strip (7) will affect the lower limit of float travel.
REPLACEMENT PARTS LIST
Item Number Description
Number
Req’d.
Part Number
1 Set of Movable and Stationary Contacts ……………………………………………... 2 9998 PC-242
2 Switch Mechanism CG Types (including Form R) …………………………………... 1 1551-C7-G1
3 Float (304 SS) …………………………………………………………………………… 1 9049 HF3
4 Float (316 SS) …………………………………………………………………………… 1 9049 HF4
5 Adjusting Plate Assembly ……………………………………………………………… 1 2810-D7-G1
6 Operating Lever …………………………………………………………………………. 1 65079-042-01
7 Adjusting Strip …………………………………………………………………………… 2 2810-X8
8 Set Screw ………………………………………………………………………………... 1 21801-14080
9 4½” …………Connector and Rod Assy ……………………………………………… 1 2810-C3-G19
9 5” ……………Connector and Rod Assy ……………………………………………… 1 2810-C3-G18
9 7” ……………Connector and Rod Assy ……………………………………………… 1 2810-C3-G6
- Seal and Installation Kit (Buna-N) …………………………………………………….. 1 9998 PC-337
- Seal and Installation Kit (Viton) ……………………………………………………….. 1 9998 PC-338