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Hi-E Model EPH Pool and Spa Heater
4. Remove the foam sleeve and clean it with warm
water and detergent, if necessary.
5. Take out the paper element and shake or gently
brush the element to remove any dust that may
have collected. Compressed air may be used for
this process. If the paper element cannot be
cleaned satisfactorily, replace it.
Caution
When using compressed air, be careful not
to damage component or direct compressed
air at anyone. Failure to comply could result
in damage to component or injury from
flying dust.
6. Reinstall the paper element, the foam sleeve, and
the retaining hardware. Make sure the air filter is
seated tightly at the venturi inlet, and the cap is in
place so that air cannot bypass the filter element.
4B. Inspecting the Flow Control Valve
The flow control valve maintains the correct
volume of water through the heater over varying
conditions (e.g., water pressure and pool filter cleanli-
ness) up to a maximum flow rate of 125 GPM (474
LPM). If the system's filter flow rate exceeds 125
GPM (474 LPM), a bypass valve is required.
The flow control valve normally does not require
service, but chemical imbalances can damage the flow
control valve, shaft, or spring which, over time, can
slow or eventually shut down the valve. Either condi-
tion can cause erratic heater operation and shorten
heater life.
Perform a temperature rise test (see Section 2E) to
confirm proper operation of the flow control valve.
To inspect the flow control valve:
1. Turn OFF the filter pump.
2. Remove the cap from the flow control valve (see
Fig 13).
3. Inspect the disk to make sure it is properly seated.
4. If the disc is not properly seated, disassemble the
valve and overhaul it. Replace any corroded parts.
3B-6. Testing the Combustion Fan Motor
If the combustion fan will not run, the motor or
ignition control may be at fault. To test the combus-
tion fan:
1. If the FAN ON indicator light is on, and the fan is
not on, check for 120VAC at the motor.
2. If there is voltage, replace the combustion fan.
3. If there is no voltage, replace the ignition control.
3B-7. Testing the Gas Valve
If the igniter glows, but no flame appears at the
burner surface, test the gas valve as follows:
1. Clip one lead of the voltmeter to the gas valve
terminal having two brown wires attached to it.
2. If the voltmeter does not read voltage, replace the
ignition control.
WARNING
Never attempt to repair the gas valve. Such
attempts will void the warranty, and could
lead to dangerous results.
3. If the voltmeter shows voltage, verify that the gas
is on and the gas locks are open. If the gas is on
and the gas locks are open, then replace the gas
valve.
SECTION 4.
Maintenance
4A. Replacing the Combustion Air Filter
The Hi-E EPH 300 heater uses a high efficiency
paper, fiber matrix filter covered with a foam sleeve.
The sleeve stops large particles and extends the life of
the paper element. A dirty air filter can reduce the
combustion air so that the venturi pressure switch
does not sense enough air flow. If this occurs, replace
the combustion air filter as follows:
1. Remove the top of the heater.
2. Loosen the thumbnuts at the right end of the filter
assembly.
3. Remove the retainer and combustion air filter cap,
then remove the filter assembly (see Fig. 12).
Содержание Hi-E EPH 300
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