Raypak 88AR-398A, Installation & Operating Instructions Manual

Page: 59 / 68

59
Monthly
1. Check flue, vent, stack, or dampers.
2. Test high and low gas pressure interlocks (if
equipped). (See “Safety Inspection”.)
Semi-Annually
1. Recalibrate all indicating and recording gauges.
2. Check flame failure detection system components.
3. Check firing rate control by checking the manifold
pressure. (See “Manifold Check”.)
4. Check piping and wiring of all interlocks and shut-
off valves.
Annually
1. Test flame failure detection system.
2. Test high limit and operating temperature. (See
“Post Start-Up Check”.)
3. Check flame sensor.
4. Refer to Table U for gas valve combustion read-
ings.
5. Check valve coil for 60-cycle hum or buzz. Check
for leaks at all valve fittings using a soapy water
solution (while unit is operating). Test other oper-
ating parts of all safety shut-off and control valves
and increase or decrease settings (depending on
the type of control) until the safety circuit opens.
Reset to original setting after each device is test-
ed.
6. Perform leakage test on gas valves, if required by
local codes.
7. Inspect and clean burner using shop air.
8. Clean the combustion chamber coil, using the pro-
cedure on the following page.
As Required
1. Recondition or replace low water cut-off device (if
equipped).
2. Check drip leg and gas strainers.
3. Check flame failure detection system. (See “Post
Start-Up Check”.) Verify high and low fire flame
signal, compare to start-up data.
4. Check igniter. Clean and verify spark gap (see
Fig. 56).
5. Check fan speed and manifold pressure. (See
“Blower Check” and “Manifold Check”.)
6. Test safety/safety relief valves in accordance with
ASME Heater and Pressure Vessel Code Section
IV.