Fastrax Hellfire 900, Installation, Operation & Maintenance Instructions Manual

Page: 47 / 56

47 47
Se
rv
ic
e
J.5 Main And Safety Gas Solenoid Valves Leak Test
1. Turn heater OFF.
2. Verify supply pressure is between 5 – 20 psi.
3. Close the manual pilot gas shut off valve (5) upstream of
the pilot gas regulator (4), with the handle perpendicular
with the pipe.
4. With the manifold pressure gage (10) reading “0”, close the
manual gas shut off valve(11), downstream of the main and
safety gas solenoid valve (9).
5. After 10 minutes there should be no increase of pressure
on the downstream gauge. If there is an increase, refer to
the Honeywell gas valve manual in the component bulletin
section at the end of this manual, for service information.
J.6 Dirt Trap And Strainer
WARNING
WARNING. All persons employed in handling propane
or natural gas shall be trained in proper handling and
operating procedures, as required by local authorities
having jurisdiction.
1. If a dirty supply line is suspected, turn off the local gas supply,
remove the dirt trap cap and inspect for dirt and moisture.
2. If a strainer is installed, remove center plug and inspect for
blockage. If evidence is found, locate source and correct
problem.
3. If the strainer screen is clogged, remove the cap and
screen. Old gasket is not reusable. Clean screen. Apply
sealant to plug threads. Reinstall cleaned screen, cap with
new gasket, and plug.
4. Inspect manifold and clean if necessary.
5. Empty cap of any dirt or moisture. Apply thread sealant
and reinstall cap.
6. Turn on gas supply and leak test dirt trap.
7. Perform Main And Safety Gas Solenoid Valves Leak to
ensure valve seats seal.
J.7 Motor
Running amps greater than 115% of the motor rated full
load amps can indicate failed bearings, excessive air leaks
in the ductwork, inadequately sized power supply wires, or
poor electrical connections.
Voltage Phase Motor FLA Rating* FLA X 1.15**
240 1 12.5 14.4
208 3 7.9 9.1
460 3 3.6 4.1
575 3 3.0 3.5
*
FLA (Full Load Amperage), as shown on motor nameplate.
** Maximum current draw under design operating conditions
of -40°C/°F ambient temperature at sea level and supply voltage.
Current draw drops with temperature, elevation or voltage increase.
NOTE: Measure current between motor and contactor, not at
the supply terminals.
J.8 Vibration Specifications and Measurement
1. All motor/impeller/base sets are match balanced with
vibration levels lower than 0.20 in./sec RMS, at the four
points depicted.
3
1
2
4
2. Do not measure on covers or guards.
3. Mark locations 1, 2, 3 and 4 on motor to ensure repeatable
measurements for trend analysis.
4. Take measurements vertically at points 1 and 2, and
horizontally at 3 and 4.
Vibration Level (in./sec)
Acceptable Less than 0.20
Tolerable 0.21 to 0.29
Excessive 0.30 to 0.71
Extreme 0.72 or more
J.9 Lubrication
1. The motor has sealed bearings and does not require
lubrication.
2. When installing flame rod or igniter always apply high
temperature anti seize compound to threads.
J.10 Flame Safety Relay (FSR)
1. Ensure that adequate gas pressure is available.
2. Note the 5 LEDs on the front face of the FSR.
3. The following is the normal expected status LED sequence:
3.1 With adequate power, the green POWER will be lit and
will blink every 4 seconds, indicating standby mode.
3.2 Turn the mode selector switch to “MANUAL”. The
blower will start, followed by the trial for ignition. The
yellow PILOT LED will light.
3.3 Once the burner is lit and a flame signal is
established, the red FLAME LED lights.
3.4 After 10 seconds, the yellow MAIN LED lights, leaving
four lit LEDs, the POWER, FLAME, PILOT and MAIN.
3.5 The LEDs maintain this status until the cycling
thermostat reaches its set point and turns off the
request for heat.