Frymaster D50 Series - Manual (Page 19)

DECATHLON SERIES GAS FRYERS (CE)
CHAPTER 3: INSTALLATION
3-5
3.5 Gas Connections (cont.)
C. Manual shut-off valve: This gas service supplier-installed valve must be installed in the gas
service line ahead of the fryers in the gas stream and in a position where it can be reached
quickly in the event of an emergency.
D. Regulating Gas Pressure: The fryer and shut-off valve must be disconnected from the gas supply
during any pressure testing of the system.
1. External gas regulators are not normally required on this fryer. A safety control valve
protects the fryer against pressure fluctuations. If the incoming pressure is in excess of
3,45 kPa/35,0 mbar (½" PSI), a step-down regulator will be required.
DANGER
When pressure-testing incoming gas supply lines, disconnect the fryer from the gas
line if the test pressure is 3,45 kPa [½" PSI (14 inches W.C.)] or greater to avoid
damage to the fryer’s gas piping and gas valve(s).
E. Manifold Pressure: Your local service technician should check the manifold pressure with a
manometer.
1. Check the rating plate for manifold gas pressures. G20-G25 gas units normally require
10,0 mbar, and G31 units normally require 27,5-mbar gas pressure.
2. Confirm that the arrow forged into the bottom of the regulator body, which indicates
gas flow direction, is pointed downstream towards the fryers. The air vent cap is also
part of the regulator and should not be removed.
3. If a vent line from the gas pressure regulator is used, it should be installed in
accordance with local codes or in the absence of local codes, with the appropriate
national or European Community (CE) standards.
F. Regulators can be adjusted in the field, but it is recommended that they not be tampered with
unless the part is known to be out of adjustment or serious pressure fluctuations are found to
exist and can be solved no other way.
G. Only qualified service personnel should make adjustments to the regulators.