Important Notices; Troubleshooting Tips - Ruffneck FX5 Series Owner's Manual

Important Notices

WARNING
Read and adhere to the following. Failure to do so may result in
severe or fatal injury. WARR ANT Y WILL BE VOID.
1. Read and follow all instructions in this manual.
2. Heater is to be used only in atmospheres having an ignition
temperature higher than the heater's maximum rated operating
temperature as shown on the heater data plate. Refer to
applicable electrical codes for additional information.
3. Heater to be used only in the hazardous locations indicated on
the heater's data plate.
4. Heater is for dry indoor use only. Do not immerse in water. Do
not store or use in areas exposed to rain or snow.
5. Heater is to be connected and serviced only by a
qualified electrician experienced with hazardous
location equipment.
6. Installation and wiring of the heater must adhere to all
applicable codes.
7. Disconnect heater from power supply at integral disconnect or
fuse box before opening enclosures or servicing heater.
IF INTEGRAL DISCONNECT IS BEING SERVICED, verify that
power has been disconnected at fuse box or main panel. Lock
the switch in the "OFF" (open) position and/or tag the switch to
prevent unexpected power application.
8. This heater is equipped with a single bimetal overtemperature
high-limit. It is of the automatic reset type and therefore the
heater may restart without warning. The heater is not to be
operated with the high-limit disabled or disconnected from the
control circuit.
9. Venting pressure of the pressure relief valve (PRV) is factory
set. Do not tamper with lock nut. (See Figure 1)
10. Do not tamper or remove warning label indicator on the PRV.
11. Operate the heater only while it is permanently mounted in
an upright position. Refer to the "Installation - Mechanical"
section for details.

Troubleshooting Tips

1.0 Heater is not operating
1.1 Check all fuses in heater control box.
1.2 Check remote disconnect switch and circuit breaker.
1.3 Check voltage supplied to the heater – refer to the heater
data plate for voltage requirements.
1.4 Check thermostat by turning it and check continuity with
a multimeter.
1.5 Check the condition of the disconnect switch if the heater
is so equipped. Measure continuity through the disconnect
by engaging the switch.
4
12. Heater must be kept clean. When operating in a dirty
environment, regularly clean the finned tubes, fan, and fan
guard. Follow the recommended maintenance procedures.
Refer to the "Heater Maintenance Checklist" section for details.
13. The heater core is vacuum charged and contains propylene
glycol. If any fluid leakage occurs from the heater, disconnect
it from the power supply and have the core replaced with a
factory supplied core. Refer to the "Repair and Replacement"
section for details.
14. Do not operate the heater with any of the louvers fully closed
or overriding their stops.
15. Do not operate the heater in atmospheres corrosive to steel
or aluminum.
16. Do not operate heater in ambient temperatures above 104°F
(40°C).
17. Use factory approved replacement parts only.
18. See applicable electrical codes for seal requirements in
field installed conduits. Factory installed conduits require no
further sealing.
19. Crackling or pinging noises within the heater core
during start up may occur. This is normal.
20. Air discharge near the bottom of the heater may be
warmer than the top. This is normal.
21. If there are any questions or concerns regarding the heater,
contact the factory. Refer to the last page of this manual
for details.
PRV Lock Nut
PRV Body
Figure 1
1.6 Verify that there is a jumper wire present between terminals
5 and 6 on the terminal block located in the control box.
2.0 Contactor is chattering
2.1 Check supply voltage.
2.2 Check wiring connections. Tighten all loose electrical
connections.
2.3 Check thermostat for continuity (See 1.4). If thermostat
does not break continuity replace thermostat.
Photocopy
this page
for reuse.
Pressure Relief Valve (PRV)
PRV
Label Indicator