High Limit/Pump Pressure Checks - L.B. White Foreman CI230 Owner's Manual And Instructions

High Limit Switches
WARNING
Fire Hazard
■ Do not operate the heater with either of the high
limit switches bypassed.
■ Operating the heater with a bypassed high limit
switch may lead to overheating, possibly result-
ing in a fi re, with subsequent damage to the
heater or property damage.
This heater is equipped with two limit switches. One is
manual reset; the other is an auto-reset. The switches are
located on the side of the heater.
Auto Reset Manual Reset
Both high limit switches should be tested a minimum
of once per year when the heater is given a thorough
cleaning.
1. Remove the high limit switch.
2. Apply a small fl ame only to the sensing portion on the
back of the switch.
Foreman Ductable Oil Indirect-Fired Heater
Be careful not to melt the plastic housing of the switch
when conducting this test.
3. Within a minute, you should hear a soft click, indicating
4. MANUAL RESET SWITCH: Allow the switch to cool for
5. Check for electrical continuity across the switch
Pump Pressure Checks
ATTENTION:
Consult the data plate on the heater or page 4 in this
manual for specifi c pressures to be used.
1. Connect the oil pressure gauge to the gauge port on
2. Start heater
3. Allow motor to reach full speed.
4. Adjust pressure (using fl at blade screwdriver).
5. Turn relief valve clockwise to increase pressure.
6. Turn relief valve counter clockwise to decrease pres-
7. Set pump pressure to correct pressure as indicated on
8. Stop heater.
9. Remove pressure gauge and plug fuel pump port.
CI230 Gauge Port
Owner's Manual • Foreman
the contacts of the switch have opened.
about a minute before fi rmly pressing its reset button.
AUTO RESET SWITCH: Allow the switch to cool for
about a minute. No need to reset.
terminals to make sure the contacts have closed.
the pump. See gauge port for CI230 below, CI500/
CI750 on page 22.
sure.
heater nameplate.
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