VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
WATER LEVEL GAUGE
ASSEMBLY
1)Remove the mounting screws on the back side of the control box and lift out the pressure switch. Proceed to step 5.
WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.
1.Open the cabinet base door and remove the right side panel.
2.Close the valve at the top and at the bottom of the gauge assembly.
3.Unscrew the packing nuts at the top and bottom of the glass tube.
4.Slide the glass tube upwards until the bottom of the tube is clear of the fitting and lift it out.
NOTE: Clean tube if dirty or clogged and replace if damaged or broken.
NOTE: Do not over tighten the packing nuts or gauge glass may break.
5.Install the tube using new sealing washers.
6.Open the top and bottom valves.
7.Turn the power switch ON and allow boiler to come up to pressure.
8.Check gauge glass for water/steam leaks and if necessary, gradually tighten packing nuts until leak stops.
PRESSURE SWITCHES
WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.
1.Open the cabinet base door and remove the left side panel.
2.Remove the cover from the pressure switch control box to access the pressure switches. Refer to "CABINET BASE BOILER CONTROLS" under "COMPONENT LOCATIONS" in "REMOVAL AND REPLACEMENT OF PARTS".
3.The pressure switches are located at the bottom of the box. The pressure switch on the left is the cycling or primary control; the one on the right is the high limit control.
4.If replacing:
A.Cycling control - remove cover from pressure switch and disconnect the lead wires.
B.High limit control - disconnect the lead wires.
5.Disconnect the pressure fittings at the bottom of the switch.
6.Preset the new pressure switch to the approximate
7.Reverse procedure to install.
8.Adjust the pressure switch(s) final set points as outlined under "PRESSURE SWITCHES" in
"SERVICE PROCEDURES AND ADJUSTMENTS".
BOILER ASSEMBLY
WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.
WARNING: SHUT OFF THE GAS BEFORE SERVICING THE UNIT.
WARNING: ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS. CHECK WITH A SOAP AND WATER SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME.
1.Blowdown the boiler and, if necessary, allow to cool.
2.Disconnect the steam supply line, power leads and drain lines from the cooking compartment top to the boiler base.
3.Refer to "HEAT EXCHANGER" and perform steps 3 through 12A.
4.Remove bolts securing the boiler to frame.
5.Drain any remaining water from the boiler. A. The suggested methods are:
1)Where the drain line exits the boiler on the lower left side, separate the drain line union.
2)Remove the access panel between the boiler and the cooking compartment on the right side.
3)Disconnect the steam supply hose from the cooking compartment steam manifold.
F24700 (October 2001) |
| Page 16 of 68 |
|
