Maintenance - Frico Pamir 3500 Original Instructions Manual

Connecting the water coil (W)
The installation must be carried out by an
authorized installer.
The water coil has copper tubes with
aluminium fins and is suitable for connection to
a closed water heating system. Steel connection
pipe. The heating coil must not be connected
to a mains pressure water system or an open
water system.
Note that the unit shall be preceded by a
regulating valve, see Frico valve kit.
The water coil is connected on top of the unit
(horizontal mounting) or on the back (vertical
mounting) via connections DN20 (3/4''),
external thread. Flexible hoses are available as
accessories.
NOTE: Care must be taken when connecting
the pipes. Use a pipe wrench or a similar
tool to grip the air curtain connections to
prevent straining of the pipes and subsequent
water leakage during connection to the water
supply pipe-work.
The connections to the heating coil must be
equipped with shut off valves to allow trouble-
free removal.
A vent valve should be connected at a high
point in the pipe system. Air valves are not
included.
For vertical installation and bottom water
connection it is not possible to bleed the coil
in the unit. Ensure that the water coil is filled
with water and that no air remains, prior to
commissioning. See Fig. 4.
Our recommended solution is to use a
T-connection and shut off valves. Small air
bubbles may remain, but will disappear with
normal operation.
Adjustment of the air curtain and airflow
The direction and speed of the airflow should
be adjusted considering the load on the
opening. Pressure forces affect the airstream
and force it inwards towards the premises
(when the premises are heated and the
outdoor air is cold).
The airstream should, therefore, be directed
outwards to withstand the load. Generally
speaking, the higher the load, the greater the
angle required.
Pamir 3500/4200/5000
Basic setting fan speed
The fan speed when the door is open is
set using the control. Note that the airflow
direction and the fan speed may need fine
adjustment depending on the loading of the
door.
Filter (W)
The water coil is protected against dirt and
blockage by an air filter which covers the coil
face. In environments where the filter needs
cleaning often, it is advisable to use an external
intake filter (see accessories pages), which
provides an easier maintenance, since the unit
does not need to be opened.
Service, repairs and maintenance
For all service, repair and maintenance first
carry out the following:
1. Disconnect the power supply.
2. Loosen the screws and raise the front panel.
The front is locked in the open position with
the front hatch hook, see fig 1A or removed
completely, see fig. 1B. The service hatch is
removed by loosening the screws.
3. After service, repairs and maintenance fasten
the service hatch and the front. When the
front is reinstalled it is important to ensure
that it is firmly seated in the front locks. See
Fig. 1B. Place the front on the edge, push the
hook into the slot and tighten the wing nuts.

Maintenance

Unit with water heating
The appliance filter should be cleaned regularly
to ensure the air curtain effect and heat
emission from the device. How often depends
on local circumstances. A clogged filter is not a
risk, but the appliance function can fail.
1. Disconnect the power supply.
2. Loosen the screws and raise the front panel.
The front is locked in open position with the
front hatch hook. See Fig. 1A.
3. Remove the filter and vacuum clean or wash
it. If the filter is clogged or damaged, it may
need to be changed.
EN
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