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VHX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS
F24700 (October 2001) Page 16 of 68
WATER LEVEL GAUGE
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.
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.
1) Remove the mounting screws on the
back side of the control box and lift
out the pressure switch. Proceed to
step 5.
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 cut-out (OFF) and cut-in (ON) set
points before installing. Refer to "PRESSURE
SWITCHES" in "SERVICE PROCEDURES
AND ADJUSTMENTS".
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.