TriangleTube Prestige Cascade System User Manual

Page 47

Maintenance Procedures

SECTION XI - MAINTENANCE PROCEDURES

Maintenance Procedures

The Cascade should be inspected and serviced
annually, preferably at the start of the heating
season, by a qualified service technician. In addi-
tion, the maintenance as further explained should
be performed to assure reliability.

The following information provides detailed
instruction for completing the maintenance items
outline in the maintenance schedule. In addition
to this maintenance, the Cascade should be serv-
iced at the beginning of the heating season by a
qualified service technician.

Reported Problems

Any problems reported by the owner should be checked,
verified and corrected before proceeding with any main-
tenance procedures.

Check Surrounding Area

Verify that the area surrounding the Cascade is free of
combustible / flammable materials or flammable vapors
or liquids. Remove immediately if found.

Check System Piping

Inspect water piping on the Cascade system for leaks
and verify that the piping is leak free and properly sup-
ported.

Inspect the fittings and components on the unit and ver-
ify they are leak free.

Eliminate all boiler water system leaks. Continual
fresh make-up water will reduce the heat exchang-
er life causing boiler failure. Leaking water may
also cause severe property damage to the sur-
rounding area.

WARNING

NOTICE

Check Boiler/ Cascade System

Verify all system components are correctly installed and
operating properly.

Check the cold fill pressure for the system, typical cold
water fill pressure is 12 psig.

Verify the system pressure, as the unit operates at high
temperature, to ensure the pressure does not exceed 25
psig (Standard Cascade) or 75 psig (High Pressure (HP)
Cascade). Excessive pressure reading indicates expan-
sion tank sizing is incorrect or system performance prob-
lems.

Inspect air vent and air separators in the system. Remove
the caps on automatic air vents and briefly depress the
valve stem to flush vent. Replace the cap when complet-
ed. Ensure vents do not leak, replace any leaking vents.

Check Expansion Tank

Refer to Section VI - System Piping for recommended
location of the expansion tank and air elimination
devices.

Closed -Type Tank:

Ensure tank is partially filled with water leaving
an air gap as a cushion. Refer to the manufac-
turer’s instruction for proper fill level.

Ensure the tank is fitted with a device that
reduces gravity circulation of air-saturated tank
water back into the system. This device pre-
vents air from bubbling up through the water as
it returns from the system.

Ensure no automatic air vents are used in the
system. This will allow air to escape from the
system instead of returning to the tank.

Diaphragm Tank:

Ensure the system contains a minimum of one
automatic air vent. Recommended location of the
air vent should be atop an air elimination devices.

Remove the tank from the system and check the
charge pressure. The charge pressure is typical-
ly 12 psig. If tank does not hold a charge pres-
sure, then the membrane is damaged and the
tank should be replaced.