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Model LG & LD Pool and Spa Heater
Page 21
3H. Periodic Inspection
3H-1. Owner Inspection
Waterpik Laars designs and constructs the Laars
Lite 2 heater to provide long performance life when
installed and operated properly under normal condi-
tions. The following basic guidelines are suggested for
your inspection:
1. Keep the top and surrounding area of the heater
clear of all debris.
2. Keep the heater area clean and free of all com-
bustible materials, flammable liquids and vapors,
as well as sanitization chemicals.
3. Do not use the heater if any part has been under
water. Immediately call a qualified professional
technician to inspect the heater and replace any
part of the control system which has been sub-
merged.
N'utilisez pas cet appareil s'il a été plongé dans
l'eau, même partiellement. Faites inspecter
l'appareil par un technicien qualifié et remplacez
toute partie du système de contrôle et toute
commande qui ont été plongés dans l'eau.
4. If the heater is equipped with a pressure relief
valve, check for corrosion in and around the
valve. With the filter pump on, lift the release
lever on the top of the valve to make sure that
water runs freely through it. If corrosion is found,
replace the pressure relief valve. When replacing
the valve, be sure that the pump is off. Install the
valve so that the discharge is directed away from
any area the may be damaged by water.
5. Be sure all combustion air and ventilation open-
ings are not blocked.
3H-2. Professional Inspection
In addition, annual inspections by a qualified
professional technician are recommended to keep the
heater operating safely and efficiently through the years.
The following basic checks should be performed.
1. Check for loose or broken wires and terminal
connections.
2. Verify pressure switch operation by cycling
the spa pump on and off a few times. The
heater should go off immediately after the
pump stops.
3. Inspect the electrical controls, specifically the
following:
a. High limit controls.
b. Pressure switch.
c. Temperature control.
d. Automatic gas valve.
4. Inspect the venting system for blockage,
leakage, and corrosion.
5. Check for spider webs in the pilot and main
burner orifices - especially at Spring start-up.
6. Conduct a normal operating cycle and observe
that the sequence proceeds as intended.
7. Inspect the external surfaces of the heat
exchanger tubes for black carbon soot buildup
by placing a mirror between and under the
burners when the heater is firing. Remove any
soot that has collected on the tubes, and
correct the cause.
NOTE: After installation and first start-up,
check the heat exchanger for black carbon soot
buildup after the following periods of operation: 24
hours, 7 days, 30 days, 90 days, and once every 6
months thereafter.
Proper flames appear:
a. Blue in color.
b. 1 to 4 inches (25 to 102mm) high above
burner surface.
SECTION 4.
Parts List for Laars Lite 2 Heater
4A. General Information
To purchase parts or obtain a comprehensive
maintenance manual for the Laars Lite 2 heater,
contact your nearest Waterpik Laars dealer or
distributor. If they cannot supply you with what you
need, contact the Customer Service Manager,
Waterpik Laars, 21 Pimentel Ct, Novato, California,
94949, Telephone (415) 382-8220 extension 245.
4B. Parts List
The following three pages contain a parts list,
general exploded view and detailed exploded views to
aid in parts identification. Please refer to these pages
when ordering parts for your Laars Lite 2 pool heater.
WARNING
Improper installation or maintenance can
cause nausea or asphyxiation from carbon
monoxide in flue gases which could result in
severe injury, or death.