Engine Adjustment - Rheem GEN12AD-V Manual De Instalación

5. Install 15 Amp fuse in control panel.
6. Set generator's system switch to AUTO.
7. Push and hold MANUAL OVER-RIDE button on control
panel for about six seconds. Engine will start.
When the generator is started for the very first time, it
will require that air in the gaseous fuel lines be purged.
This may take a few minutes.
8. Listen for unusual noises, vibration or other indications
of abnormal operation. Check for oil leaks while
engine runs.
9. Let engine warm up for about five minutes to allow
internal temperatures to stabilize.
10. Check generator output at load side of circuit breaker.
Voltage should be 239-262 Volts, frequency should be
62.0 - 62.5 Hz.
If either parameter is outside these ranges, perform
Engine Adjustment described later in this section.
11. Check generator output between one generator
connection lug and neutral lug, then between other
generator connection lug and neutral lug. In both cases,
voltage reading should be between 119-131 Volts.
DO NOT proceed until you are certain that generator AC
voltage and frequency are correct and within the stated
limits. To obtain the proper generator frequency, see
Engine Adjustment.
12. Push and hold MANUAL OVER-RIDE button on control
panel again until engine stops.
13. Reinstall circuit breaker enclosure cover.

Engine Adjustment

There are regional variances in the composition of gaseous
fuel. Each home generator unit leaves the factory set for
NG operation. If the generator output voltage or frequency
measured during Initial Start-Up is outside the listed ranges,
the combustibility of the gas supplied at the installation
site may be substantially different from the fuel used at
the factory.
To adjust the engine for this difference, proceed as follows.
1. Remove four screws (A) that secure control box front
to enclosure to expose unit's circuit breaker.
A
A
2. Connect an accurate frequency meter to line side of
generator's main circuit breaker.
he he fa
t voltage o voltag
s outside th s outside the
upplied at upplied at th nstallati nstalla
ferent from ferent from fuel used a uel used a
nce, proceed ce, proceed follows follows.
cure co cure ol box front l box fron
t t aker. aker.
A
A
3. Ensure that the 15 Amp fuse is installed.
4. Set the generator's main circuit breaker ON.
5. Set the generator's system switch to AUTO.
6. Push MANUAL OVER-RIDE on control panel. When the
engine starts, allow it to warm up for five minutes.
7. Normal no load frequency is 62.0 to 62.5 Hz. If
adjustment is needed at no load, remove unit side
panels. Using needle nose pliers, bend spring anchor
tang (B) slowly up or down until frequency is 62.0 to
62.5 Hz.
B
8. Turn utility service disconnect to transfer switch OFF. vice disconne ce disconn
After a short time delay, transfer switch will connect t time delay t time delay,
to generator. ator. tor.
9. Load generator to full load. generator t generator to
10. After load stabilizes, frequency should be fter load stab er load sta
abo above above 57.0 Hz. 57.0 57
11. If frequency is below 57.0 Hz, bend spring anchor tang 11. If frequ 11. f frequ
until frequency is above 57.0 Hz. unti unt
12. Turn service disconnect to transfer switch ON. Transfer 12. 2.
switch will connect to utility power after five minutes.
13. Push and hold MANUAL OVER-RIDE on control panel
until engine stops.
14. After the engine has stopped:
2 through 7.
to step 15.
If no load frequency falls out of the no load range
shown in step 7 after full load adjustment is made,
contact an authorized service center.
15. Reinstall circuit breaker enclosure cover.
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